Find the solutions using the Zero Product Property:

Answer: A 4 digit PIN number is selected. What is the probability that there are no repeated digits? ... There are 10 possible values for each digit of the PIN (namely: 0 ..

Step-by-step explanation:

The whole number(s) are 3 and -2.  A whole number doesn't have fractions or places after the decimal.  

The natural number(s) is 3.  Think of a natural number as those used for counting, like "1, 2, 3, 4..."

The integer(s) are 3 and -2.  An integer includes positive or negative whole numbers, and 0.

The rational number(s) are 3, -2, and 1/4.  A rational number can be written as a fraction.

And irrational number, the square root of 5, cannot be written as a fraction.  It is the opposite of a rational number.  

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Using diagram whole numbers, natural numbers, integers, and rational or irrational numbers, which category does -2, 3, 1/4, and square root of 5

which is a whole number, natural number, integer, or rational or irrational number: -2, 3,  1/4, and square root of 5

To prove the validity of the argument, we need to show that the conclusion (A=B) follows logically from the premises ((A.B)=C and (A.B)V-C).

To prove the validity of the argument (A.B) = C, (A.B) V-C /: A = B, we can use the following steps:

1. Assume that A ≠ B, and then use the distributive law of conjunction and disjunction to rewrite the premise as follows: (A.B) V (-A.-B) V C
2. Apply De Morgan's laws to simplify the above expression to: (-A V -B) V (A V -C) V (B V -C)
3. Use the distributive law of disjunction over conjunction to further simplify the expression to: (-A V -B V A V -C) V (-A V -B V B V -C)
4. Use the law of excluded middle to simplify the first part of the expression to: (-A V -C) V (-B V -C)
5. Apply the rule of inference known as disjunctive syllogism to conclude that: -C
6. Substitute -C into the original premise to obtain (A.B) V -(-C), which is equivalent to (A.B) V C
7. Use the distributive law of conjunction over disjunction to rewrite the above expression as follows: (A V C).(B V C)
8. Apply the rule of inference known as simplification to obtain A V C and B V C
9. Use the law of excluded middle to simplify the second part of the expression to: -C V B
10. Apply the rule of inference known as disjunctive syllogism to conclude that: A
11. Use a similar argument to show that B must also be true.
12. Therefore, we have shown that if (A.B) = C and (A.B) V-C, then A = B, which proves the validity of the argument.

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Answer:

To prove that n^3 + 3n + 4 is Θ(2^n), we need to show that it is both O(2^n) and Ω(2^n).

First, let's show that it is O(2^n). To do this, we need to find constants c and n0 such that n^3 + 3n + 4 <= c * 2^n for all n >= n0.

We can start by simplifying the left-hand side: n^3 + 3n + 4 <= n^3 + n^3 + n^3 (since 3n <= n^3 and 4 <= n^3 for all n >= 1).

So we have: n^3 + 3n + 4 <= 3n^3

Now, for n >= 1, we know that 2^n <= 3^n, so we can write: 3n^3 >= 2^n

Therefore, we have: n^3 + 3n + 4 <= 3n^3 <= c * 2^n for c = 3 and n0 = 1.

So, n^3 + 3n + 4 is O(2^n).

Next, let's show that it is Ω(2^n). To do this, we need to find constants c and n0 such that n^3 + 3n + 4 >= c * 2^n for all n >= n0.

One way to approach this is to try to find a lower bound for n^3 + 3n + 4 by removing some terms (because we want to show that the left-hand side is at least as big as some constant times 2^n, and the more terms we have on the left-hand side, the harder that is to do).

If we remove the 3n and the 4, we have n^3 <= n^3.

If we remove only the 4, we have n^3 + 3n >= n^3.

Either way, we have: n^3 + 3n >= n^3 >= c * 2^n for c = 1 and n0 = 1.

Therefore, n^3 + 3n + 4 is Ω(2^n).

Since we have shown that n^3 + 3n + 4 is both O(2^n) and Ω(2^n), we can conclude

Step-by-step explanation:

We have shown that n^3 + 3n + 4 is in the order of e(2n^3), as required.

To prove that n^3 + 3n + 4 is in the order of e(2n^3), we need to show that there exist positive constants c and n0 such that:

n^3 + 3n + 4 <= c * e(2n^3) for all n >= n0

Taking natural logarithm on both sides of the inequality, we get:

ln(n^3 + 3n + 4) <= ln(c) + 2n^3

Now, we need to show that there exist positive constants c and n0 such that the inequality holds.

Taking the derivative of the left-hand side of the inequality, we get:

d/dn (ln(n^3 + 3n + 4)) = (3n^2 + 3) / (n^3 + 3n + 4)

For n >= 1, we have:

3n^2 + 3 <= 3n^3 + 3n^2 <= 6n^3

n^3 + 3n + 4 >= n^3

Therefore,

d/dn (ln(n^3 + 3n + 4)) <= (6n^3) / n^3 = 6

This means that the function ln(n^3 + 3n + 4) is bounded above by a constant of 6. Thus, we can set c = e^6 and n0 = 1.

For all n >= 1, we have:

ln(n^3 + 3n + 4) <= 6 + 2n^3

n^3 + 3n + 4 <= e^(6 + 2n^3) = e^6 * e^(2n^3)

Therefore, we have shown that n^3 + 3n + 4 is in the order of e(2n^3), as required.

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Yes, it would be unusual if less than 52% of the sampled teenagers owned smartphones.

We are given the mean (μp) as 0.55 and the standard deviation (σp) as 0.0397. We need to find the probability of having less than 52% (0.52) of teenagers owning smartphones.

1) Calculate the z-score.
z = (x - μp) / σp
z = (0.52 - 0.55) / 0.0397
z ≈ -0.76

2) Find the probability associated with the z-score.
Using a z-table or a calculator, we find that the probability of having a z-score less than -0.76 is approximately 0.224. This means there is a 22.4% chance that less than 52% of the sampled teenagers would own smartphones.

Since the probability of having less than 52% of the sampled teenagers owning smartphones is 22.4%, it would be considered unusual, as the probability is relatively low.

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Answer:

There is only one way to obtain a sum of 12 when rolling two standard six-sided dice, which is to get a 6 on both dice.

The probability of rolling a 6 on one die is 1/6. Therefore, the probability of rolling a 6 on both dice is:

P(D1 = 6 and D2 = 6) = P(D1 = 6) x P(D2 = 6) = 1/6 x 1/6 = 1/36

Therefore, the probability of rolling a sum of 12 with two standard six-sided dice is 1/36.

P(D1 + D2 = 12) = 1/36

IF THIS HELPS, CAN YOU PLEASE GIVE MY ANSWER BRAINLIEST?:)

The estimated value of λ and x = 2.91, we get:

P(1.2 ≤ median load ≤ 6) = 1 - e^(-0.38*2.91) - (

2.2.1 To calculate the probability that the maximum load is at least 3, we first need to find the distribution of the maximum load. Let X be the random variable representing the loads. Then the probability that the maximum load is less than or equal to x is given by:

P(X ≤ x)^n = (1 - e^(-λx))^n

where n is the sample size. Taking the derivative of this expression with respect to x and setting it equal to zero, we get:

n(1 - e^(-λx))^(n-1)λe^(-λx) = 0

Solving for x, we get

x = -ln(1 - 1/n)/λ

Now, we can calculate the probability that the maximum load is at least 3 as follows:

P(X ≤ 3)^n = (1 - e^(-λ*3))^n

P(maximum load ≥ 3) = 1 - P(X ≤ 3)^n

Substituting the estimated value of λ (sample variance of the loads) and the sample size n = 5, we get:

P(maximum load ≥ 3) = 1 - (1 - e^(-0.38*3))^5 ≈ 0.578

Therefore, the probability that the maximum load is at least 3 is approximately 0.578.

2.2.2 To calculate the probability that the minimum load is no more than 4.11, we can use the same approach as in 2.2.1, but with the inequality flipped:

P(minimum load ≤ 4.11) = 1 - P(X ≥ 4.11)^n

where we need to find the distribution of the minimum load. The probability that the minimum load is greater than or equal to x is given by:

P(X ≥ x) = e^(-λx)

Substituting the estimated value of λ and x = 4.11, we get:

P(minimum load ≤ 4.11) = 1 - e^(-0.38*4.11) ≈ 0.448

Therefore, the probability that the minimum load is no more than 4.11 is approximately 0.448.

2.2.3 To calculate the probability that the median load is between 1.2 and 6, we first need to estimate the median load from the sample. The sample is already sorted as 2.39, 2.51, 2.91, 3.08, 3.11. The median load is the middle value, which is 2.91.

The probability that the median load is less than or equal to x is given by:

P(median load ≤ x) = P(X1 ≤ x, X2 ≤ x, X3 ≥ x, X4 ≥ x, X5 ≥ x) + P(X1 ≤ x, X2 ≤ x, X3 ≥ x, X4 ≥ x, X5 ≤ x) + P(X1 ≤ x, X2 ≤ x, X3 ≥ x, X4 ≤ x, X5 ≥ x)

where Xi represents the ith load in the sample. The probability that the median load is between 1.2 and 6 is then given by:

P(1.2 ≤ median load ≤ 6) = P(median load ≤ 6) - P(median load ≤ 1.2)

Substituting the estimated value of λ and x = 2.91, we get:

P(1.2 ≤ median load ≤ 6) = 1 - e^(-0.38*2.91) - (

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The dot product of u.v is  -87.

The dot product, also called scalar product, is a the sum of the products of corresponding components. measure of closely two vectors align, in terms of the directions they point.

If we have 2 vectors

A= ⟨a, b⟩

and B =  ⟨c, d⟩

The dot product is

A . B = ⟨a, b⟩ . ⟨c, d⟩ = ac + bd

Here, u = 4i − 7j and v = −6i + 9j

The dot product is:

u . v = ( 4 ,− 7 ). ( −6 , 9)

u . v= 4 . (-6) + (-7). (9)

u. v = -24 - 63

u. v = -87

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Answer:

3 centimeters

Step-by-step explanation:

The partial derivatives ∂N/∂u, ∂N/∂v, and ∂N/∂w when u=9, v=4, and w=3 are:

[tex]∂N/∂u = 96[/tex]

[tex]∂N/∂v = 19[/tex]

[tex]∂N/∂w = 35[/tex]

To find the indicated partial derivatives, we can use the chain rule of differentiation. Starting with ∂N/∂u, we have:

[tex]∂N/∂u = (∂N/∂p) \times (∂p/∂u) + (∂N/∂q) \times (∂q/∂u) + (∂N/∂r) \times (∂r/∂u)[/tex]

Substituting the given values for p, q, and r, we get:

[tex]∂N/∂u = (1 + q) \times 1 + (p + r) \times w + u \times w[/tex]

Using the values of p, q, and r in terms of u, v, and w, we get:

[tex]∂N/∂u = (1 + v + uw) + (u + vw + w + uv) \times 3 + 9 \times 3[/tex]

Simplifying the expression, we get:

[tex]∂N/∂u = 60 + 4u + 3v + 12w[/tex]

We can find ∂N/∂v and ∂N/∂w by applying the chain rule of differentiation and using the given values for u, v, and w. Substituting the values, we get:

[tex]∂N/∂v = 3u + 4 + 3w[/tex]

[tex]∂N/∂w = 3u + 3v + 2[/tex]

The chain rule allows us to find the partial derivatives of a function with respect to its variables, by breaking down the function into its component parts and differentiating each part separately.

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Answer:

1) d. -3(x^2)

2) e. 2ba

3) b. 10x

4) c. 2a

5) a. (a^2)b

Answer: x= 2, -2.5

Step-by-step explanation: trust lol

The sinking fund payment will be $1,096.28.
Total payments into the bond will be $61,391.68.
The bond will earn $25,608.32 interest after 14 years.

Let's use the Time Value of Money (TVM) Solver to determine the quarterly payment needed to achieve your goal.

Given:
- Future Value (FV) = $87,000
- Time (n) = 14 years, compounded quarterly, so n = 14 * 4 = 56 quarters
- Interest rate (i%) = 3.2% compounded quarterly, so i% = 3.2 / 4 = 0.8% per quarter
- Present Value (PV) = 0, since we're starting from scratch
- PMT Type: END (payments made at the end of each quarter)

Now, input these values into the TVM Solver:

n = 56
i% = 0.8
PV = 0
PMT = ?
FV = 87,000

Solve for PMT:

PMT = -1,096.28 (rounded to the nearest cent)

The sinking fund payment will be $1,096.28.

To find the total payments into the bond, multiply the payment amount by the number of quarters:

Total payments = PMT * n = 1,096.28 * 56 = $61,391.68

To find the interest earned after 14 years, subtract the total payments from the future value of the bond:

Interest earned = FV - Total payments = 87,000 - 61,391.68 = $25,608.32

So, the bond will earn $25,608.32 in interest after 14 years.

Your answer:
The sinking fund payment will be $1,096.28.
Total payments into the bond will be $61,391.68.
The bond will earn $25,608.32 interest after 14 years.

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If the money supply doubles and the velocity of money is stable, the long-run impact on real GDP will depend on other factors that influence the economy's overall growth. In the short term, a sudden increase in the money supply may boost economic activity and output as businesses have more access to credit and consumers have more disposable income to spend.

However, in the long run, the economy's potential output is determined by its ability to produce goods and services efficiently, which is reflected in the level of real GDP.
If the money supply continues to grow faster than the economy's capacity to produce, it can lead to inflation, which can erode the purchasing power of money and reduce economic growth. Therefore, in the long run, the impact of a doubling of the money supply on real GDP will depend on whether it leads to sustainable economic growth or inflationary pressures.

Moreover, the relationship between money supply, velocity, and real GDP is complex and influenced by various factors, such as fiscal policy, monetary policy, technological progress, and demographic changes. Therefore, while a doubling of the money supply may lead to short-term growth, its long-term impact on real GDP depends on the broader economic context in which it occurs.
If the money supply doubles and the velocity of money remains stable, in the long run, the real GDP may not be significantly affected. Here's a step-by-step explanation of this scenario:

1. When the money supply doubles, there will be more money circulating in the economy. This increase may initially lead to higher demand for goods and services, causing prices to rise.

2. The velocity of money, which is the rate at which money is exchanged from one transaction to another, remains stable. This means that the overall pace of economic transactions doesn't change.

3. In the short run, the increased money supply may lead to a temporary boost in economic activity and possibly higher nominal GDP. However, this increase is primarily due to the inflation caused by the rise in prices, not necessarily an increase in the production of goods and services.

4. In the long run, the economy will adjust to the higher money supply, and the real GDP will return to its original level. This is because the long-run growth of the real GDP is determined by factors such as productivity, technological advancements, and the availability of resources, rather than changes in the money supply.

5. Eventually, the economy will reach a new equilibrium with higher prices, but the real GDP will remain unchanged in the long run. The increase in the money supply will only lead to higher inflation, not a sustainable increase in real economic output.

In summary, doubling the money supply while keeping the velocity of money stable may temporarily boost nominal GDP, but it won't result in a long-term increase in real GDP, as other factors determine its growth.

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Yes, repeating two simple arithmetic operations will eventually transform every positive integer into 1.

From the question, we have the following parameters that can be used in our computation:

f(n) = n/2 if n%2 = 0

f(n) = 3n + 1 if n%2 = 1

The above definition means that

f(n) = n/2 if n is even

f(n) = 3n + 1 if n is odd

To check if repeating operations would transform to 1, we can set n = 10

and then evaluate the function values

So, we have

f(10) = 10/2 = 5

f(5) = 3(5) + 1 = 16

f(16) = 16/2 = 8

f(8) = 8/2 = 4

f(4) = 4/2 = 2

f(2) = 2/2 = 1

See that the end result of the operations is 1

Hence, repeating two operations will transform every positive integer into 1

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Is each point a solution to the given system of equations;

(-2, 3): Yes.

(2, 5): No.

(0, 2): Yes.

(1, 0): No.

In order to graph the solution for the given system of linear inequalities on a coordinate plane, we would use an online graphing calculator to plot the given system of linear inequalities and then check the point of intersection;

y > x + 1          .....equation 1.

y < -2x + 6         .....equation 2.

Based on the graph (see attachment), we can logically deduce that the solution to the given system of linear inequalities is the shaded region behind the dashed lines, and the point of intersection of the lines on the graph representing each, which is given by the ordered pairs (-2, 3) and (0, 2).

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a) The random variable in this study is the difference in system failures before and after applying the software patch for each installation.

b) Null hypothesis (H0): There is no significant difference in system failures before and after applying the software patch.
c) Alternative hypothesis (H1): There is a significant difference in system failures before and after applying the software patch.

d) The p-value of approximately 0.0034.

e) The software patch is effective in reducing system failures.

We have,
a)

What is the random variable?
The random variable in this study is the difference in system failures before and after applying the software patch for each installation.

b)
State the null and alternative hypotheses.
Null hypothesis (H0): There is no significant difference in system failures before and after applying the software patch.
Alternative hypothesis (H1): There is a significant difference in system failures before and after applying the software patch.

Now, let's calculate the differences and their mean and standard deviation to find the t-statistic and p-value:
Differences: 2, 1, 2, 2, 4, 8, 0, 4
Mean (µ) = (2+1+2+2+4+8+0+4)/8 = 23/8 = 2.875
Standard Deviation (σ) = √[((2-2.875)^2 + (1-2.875)^2 + ... + (4-2.875)^2)/7] = 2.031009
Standard Error (SE) = σ/√n = 2.031009/√8 = 0.718185

t-statistic = (µ - 0)/SE = (2.875 - 0)/0.718185 = 4.004006

c)

What is the p-value?
Since we are testing at the 1% significance level and it's a two-tailed test, we need to find the p-value for a t-statistic of 4.004006 with 7 degrees of freedom.

Using a t-distribution table or calculator, we get a p-value of approximately 0.0034.

d)

What conclusion can you draw about the software patch?
Since the p-value (0.0034) is less than the 1% significance level (0.01), we reject the null hypothesis.

This means that there is a significant difference in system failures before and after applying the software patch, indicating that the software patch is effective in reducing system failures.

Thus,

a) The random variable in this study is the difference in system failures before and after applying the software patch for each installation.

b) Null hypothesis (H0): There is no significant difference in system failures before and after applying the software patch.
c) Alternative hypothesis (H1): There is a significant difference in system failures before and after applying the software patch.

d) The p-value of approximately 0.0034.

e) The software patch is effective in reducing system failures.

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Answer:

To find the center of the given ellipse, we need to first put the equation in standard form:

9x^2 + y^2 - 18x - 6y + 9 = 0

We can start by completing the square for both the x and y terms. For the x terms, we can add and subtract (18/2)^2 = 81 to get:

9(x^2 - 2x + 81/9) + y^2 - 6y + 9 = 0

Simplifying inside the parentheses, we get:

9(x - 9/3)^2 + y^2 - 6y + 9 = 0

For the y terms, we can add and subtract (6/2)^2 = 9 to get:

9(x - 3)^2 + (y - 3)^2 = 36

Dividing both sides by 36, we get:

[(x - 3)^2]/4 + [(y - 3)^2]/36 = 1

Comparing this to the standard form of an ellipse:

[(x - h)^2]/a^2 + [(y - k)^2]/b^2 = 1

We can see that the center of the ellipse is at the point (h, k), which in this case is (3, 3). Therefore, the center of the given ellipse is (3, 3).

Step-by-step explanation:

Answer:

center, = 9, 3

radius = 9

Step-by-step explanation:

9x² + y² - 18x - 6y + 9 = 0

equation of a circle is,

x² + y² + 2ax + 2by + c = 0

where center of a circle equals, -a, -b

radius = √a² + b² - c

by comparing the general equation from the given equation,

2ax = - 18x

a = -9

2by = -6y

b = -3

center of a circle -a, -b will be 9,3

radius = √81 + 9 -9

=√81

=9

Answer: 250 square centimeters

Step-by-step explanation:

Height (h) = 10 cm

Length (l) = 5 cm

Width (w) = 5 cm

Plugging in these values into the formula, we get:

SA = 2(5)(5) + 2(5)(10) + 2(5)(10)

SA = 50 + 100 + 100

SA = 250

So, the surface area of the rectangular prism is 250 square centimeters (cm^2).

The probability of receiving more than 5 calls during the next 15 minutes is approximately 0.0322.

To solve this problem, we will use the Poisson probability distribution formula, which is:

P(X = k) = (e^(-λ) * λ^k) / k!

where:

P(X = k) is the probability of getting k events in a specific time interval

e is Euler's number (approximately equal to 2.71828)

λ is the average rate of events per interval (also known as the Poisson parameter)

k is the number of events we want to calculate the probability for

k! is the factorial of k (i.e., k! = k x (k-1) x (k-2) x ... x 2 x 1)

In this problem, we are given that the rate of calls to a customer service center follows a Poisson process with a rate of 1 call every 3 minutes. Therefore, the average rate of calls per minute (i.e., λ) is:

λ = 1 call / 3 minutes = 1/3 calls per minute

Now, we want to find the probability of receiving more than 5 calls during the next 15 minutes. We can use the Poisson formula to calculate this probability as follows:

P(X > 5) = 1 - P(X ≤ 5)

= 1 - ∑(k=0 to 5) [e^(-λ) * λ^k / k!]

= 1 - [(e^(-λ) * λ^0 / 0!) + (e^(-λ) * λ^1 / 1!) + ... + (e^(-λ) * λ^5 / 5!)]

Substituting λ = 1/3 and simplifying the equation, we get:

P(X > 5) = 1 - [(e^(-1/3) * 1^0 / 0!) + (e^(-1/3) * 1^1 / 1!) + ... + (e^(-1/3) * 1^5 / 5!)]

≈ 0.0322

Therefore, the probability of receiving more than 5 calls during the next 15 minutes is approximately 0.0322.

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Answer:

Step-by-step explanation:

The two figures are not similar and hence will not exactly map to each other

In math, two polygons qualify as similar only under the following condition:

In the polygon the ratio of the sides are not proportional. the sides are

Red: 3 units x 3 units

Blue: 1.5 units x 4 units

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The closest answer is B. None of these

To find the present value of an income of Rs. 3 lakhs to be received after 1 year at a 5% rate of interest, you can use the present value formula:

Present Value (PV) = Future Value (FV) / (1 + Interest Rate) ^ Number of Years

1. Repeat the question in your answer: The present value of an income of Rs. 3 lakhs to be received after 1 year at a 5% rate of interest is:

2. Step-by-step explanation:

Step 1: Identify the values for the formula.
- Future Value (FV) = Rs. 3 lakhs
- Interest Rate = 5% or 0.05
- Number of Years = 1

Step 2: Plug the values into the formula.
PV = Rs. 3,00,000 / (1 + 0.05) ^ 1

Step 3: Calculate the present value.
PV = Rs. 3,00,000 / 1.05

PV ≈ Rs. 2,85,714.29

Based on the given options, the closest answer is B. None of these, as the calculated present value is approximately Rs. 2,85,714.29, which does not match any of the provided options.

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Answer:

Set your calculator to degree mode.

cos(48°) = y/35

y = 35cos(48°)

tan(20°) = x / 35cos(48°)

x = 35cos(48°)tan(20°) = 8.5 inches

Answer:

8.5 in

Step-by-step explanation:

Find height, h, of the triangle:

cos48 = h/35

h = cos48(35) = 23.42

tan20 = x/23.42

x = tan20(23.42) = 8.524 ≈ 8.5 in

Answer: 18/14 or 18:14

Step-by-step explanation: this is relatively simple you have 32 in all and 14 are blue so 32-14=18 now you know there are 18 red marbles now to set up the ratio 18/14 or 18:14 (to check your work add 18+14=32)

Answer:

It's D. 6.I think i am right,you can choose letter D.If it's be false you can scold me ok?

Answer:

1. The medical assistant utilized a total of 200 thermometer probe covers this week at the clinic when taking patient temperatures.

2. The teenage patient grew a total of 5 7/8 inches this year.

3. The infant weighed 14 pounds by his 6-month check-up appointment.

4. There are 24 1-teaspoon doses in a bottle of children's Tylenol.

Step-by-step explanation:

mark brainliest