help please

(instructions: chose from the word bank below to describe the type of multiplication being used. you may use an answer more than once.)

[ identity commutative associative inverse distributive]


1. 14 x 6 = 6 x 14 ________
2. 4(5 + 7) = (4 x 5) + (4 x 7) ________
3. 8 x 1 = 8 ________
4. 7 x (6 x 2) = (7 x 6) x 2 ________
5. 12 x 3 = 3 x 12 ________
6. 1/8 x 8/1 = 1 ________
7. 1 x 9 = 9 ________
8. 3 x (7 x 2) = (3 x 7) x 2 ________
9. 2(8 + 5) = (2 x 8 ) + (2 x 5) ________





(page 2)


(instructions: choose the correct multiplication property for the problems below)



10. which property is demonstrated below?
12 x 1 = 12
A. identity
B. commutative
C. associative
D. inverse
E. distributive
11. which property is demonstrated below?
2/5 x 5/2 = 1

A. identity
B. commutative
C. associative
D. inverse
E. distributive

12. which property is demonstrated below
5 x 8 = 8 x 5

A. identity
B. commutative
C. associative
D. inverse
E. distributive


13. which property is demonstrated below?
8 x (7 x 9) = (8 x 7) x 9

A. identity
B. commutative
C. associative
D. inverse
E. distributive



14.which property is demonstrated below?
4(6 + 3) = (4 x 6) + (4 x 3)

A. identity
B. commutative
C. associative
D. inverse
E. distributive

An exponential model for the number of SMS messages sent annually for years before 2012 is [tex]y = 12421e^{0.2325x}[/tex].

In this scenario, the year would be plotted on the x-axis (x-coordinate) of the scatter plot while the SMS messages would be plotted on the y-axis (y-coordinate) of the scatter plot through the use of Microsoft Excel.

On the Microsoft Excel worksheet, you should right click on any data point on the scatter plot, select format trend line, and then tick the box to display an exponential equation for the line of best fit (trend line) on the scatter plot.

From the scatter plot (see attachment) which models the relationship between the year and SMS messages, an exponential equation for the line of best fit is given by

[tex]y = 12421e^{0.2325x}[/tex]

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The period of the function in the graph is 2π

Period represents the distance across horizontally located between successive duplicates of an equivalent outline within a graphed function.

In other words, we can say that period is the distance to complete an oscillation where this distance is counted in time. Hence period is measured is seconds

In the graph, the period can be calculated using the points

These points shows a complete oscillation.

Using from 2π to 0

= 2π - 0

= 2π

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Answer:

To solve this problem, we can use trigonometry. Let's call the length of the shadow "s" and the height of the tree "h". Since the tree is leaning, we can't just use the height of the tree directly as one leg of a right triangle. Instead, let's draw a diagram of the situation and see if we can find a way to use trigonometry.

             |\

             | \

             |  \ h

             |20\

             |   \

             |    \

     ________|____\

            s

In this diagram, the angle between the ground and the sunlight is 68 degrees, and the angle between the tree and the ground is 70 degrees (since the tree is leaning 20 degrees off vertical). We can use the tangent function to relate these angles to the lengths of the sides of the triangle:

tan(68) = h / s

tan(70) = h / (s + 125)

We can solve for "h" in terms of "s" using the second equation:

h = (s + 125) * tan(70)

Then we can substitute this expression for "h" into the first equation and solve for "s":

tan(68) = [(s + 125) * tan(70)] / s

s * tan(68) = (s + 125) * tan(70)

s * tan(68) = s * tan(70) + 125 * tan(70)

s = 125 * tan(70) / [tan(68) - tan(70)]

s ≈ 318.8 ft

Therefore , the shadow will be approximately 318.8 feet long.

Step-by-step explanation:

Answer:

V = 62.8 m[tex]^{3}[/tex]

Step-by-step explanation:

V = pi × (radius)[tex]^{2}[/tex] × height

V = [tex]\pi[/tex] × [tex]r^{2}[/tex] × h

V = (3.14 × [[tex]2^{2}[/tex]]) × 5

V = (3.14 × 4) × 5

V = 12.56 × 5

V = 62.8 m[tex]^{3}[/tex]

Answer:

[tex]\sqrt{2}[/tex]

Step-by-step explanation:

When t = 0, the velocity is:

[tex]\begin{aligned}\vec{v}(t)&=3^t \vec{i}+e^{6t} \vec{j}\\\\t=0 \implies \vec{v}(0)&=3^0 \vec{i}+e^{(6 \cdot 0)} \vec{j}\\ &=1 \vec{i}+1 \vec{j} \end{aligned}[/tex]

Speed is the magnitude of the velocity of the object.

[tex]\boxed{\text{A vector $\binom{x}{y}$ has magnitude $\sqrt{x^2+y^2}$}}[/tex]

Therefore, the particle's speed at time t = 0 is:

[tex]\begin{aligned}\implies |v|&=\sqrt{1^2+1^2}\\&=\sqrt{1+1}\\&=\sqrt{2}\end{aligned}[/tex]

Answer:

[tex]3 \frac{3}{4} \times 4 \frac{1}{2} \times 5 = \frac{15}{4} \times \frac{9}{2} \times 5 = \frac{675}{8} = 84\frac{3}{8} [/tex]

The volume is 84 3/8 cubic meters = 84.375 cubic meters.

Answer: 20

Step-by-step explanation:

because Juanita has a aquarium that is 5 feet LONG, 4 feet WIDE, and 2 feet DEEP, in part b it asks what if the water is 1 foot DEEP so what they're trying to say is what if you replace the original 2 feet DEEP with 1 foot DEEP?

so it would be length x width x depth

5x4x1=20

so the volume is 20ft^3

The distance from the point A to point B is s√3

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

Perfect cube with sides of length s.

The distance from point A to point B is calculated as

Distance^2 = s^2 + s^2 + s^2

When evaluated, we have

Distance^2 = 3s^2

Take the square roots of both sides

Distance = s√3

Hence, the distance = s√3

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The volume of the bottle is 56.52 cubic inches, and the density is 22.12 g/in³.

The volume of a cylinder is expressed as;

V = π × r² × h

Where r is radius of the circular base, h is height and π is constant pi ( π = 3.14 ).

Density is expressed mathematically as;

p = m / v

Where m is mass and v is volume.

Given that:

Diameter = 3 in

Radius r = diameter/2 = 3/2 = 1.5 in

Height h = 8 in

Mass m = 1250 g

Find the volume:

V = π × r² × h

V = 3.14 × (1.5 in )² × 8in

V = 56.52 in³

Find the density:

p = m / v

p = 1250g / 56.52 in³

p = 22.12 g/in³

Therefore, the density is 22.12 g/in³.

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As per the given details, the equation in Ax + By = C form is -5x + y = -25, where A = -5, B = 1, and C = -25.

To rewrite the equation y+5=5(x-4) in Ax+By=C form, we need to simplify and rearrange the equation to isolate y on one side:

y + 5 = 5(x - 4)

y + 5 = 5x - 20 (Distribute 5 on the right side)

y = 5x - 20 - 5 (Subtract 5 from both sides)

y = 5x - 25

Now the equation is in slope-intercept form (y = mx + b), where m is the slope and b is the y-intercept. To rewrite it in Ax + By = C form, we need to rearrange the terms to get the x and y terms on the left side and a constant on the right side:

y = 5x - 25

-5x + y = -25

So the equation in Ax + By = C form is -5x + y = -25, where A = -5, B = 1, and C = -25.

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Answer: b=18.1 and c=14.3

Step-by-step explanation:o solve for the lengths of the sides b and c in triangle ABC, we can use the law of sines, which relates the lengths of the sides of a triangle to the sines of the angles opposite those sides. Specifically, the law of sines states that:

a/sin(A) = b/sin(B) = c/sin(C)

where A, B, and C are the angles of the triangle opposite sides a, b, and c, respectively.

Given that a = 17, B = 70°, and C = 48°, we can write:

b/sin(70°) = 17/sin(A)

c/sin(48°) = 17/sin(A)

To solve for b and c, we need to find sin(A). We can do this by using the fact that the angles of a triangle sum to 180°:

A + B + C = 180°

A = 180° - B - C

A = 180° - 70° - 48°

A = 62°

Now we can substitute sin(A) = sin(62°) into the equations above and solve for b and c:

b) By basing on the findings in part (a), we rejected the null hypothesis. This implies that a Type I error – which is the mistake of disregarding a validly-true null supposition – could have potentially been made.

(c) Since the confidence interval holds both negative and positive values, we are not able to confirm that leastwise some dissimilarity might exist between these two proportions.

d) Raising the power of the test may be achievable by lessening the significance level.

In this state, it would indicate that we concluded that there exists a considerable divergence between the proportion of men and women intending to vote for Trump when factually there is no distinction.

Raising the power of the test may be achievable by lessening the significance level. Doing so will penalize us with being more lenient towards taking up the alternate assumption, consequently reducing the likelihood of having a Type II error.

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If the "angle M" measures 98° and "angle N" measures (6x + 2)°, then value of "x" must be 16.

When the "two lines" intersect, the opposite angles formed are equal in measure, which means that vertical angles are congruent. So, we have:

⇒ Angle M = Angle N

Using the given values, we can write an equation:

⇒ Angle M = 98°  and Angle N = (6x + 2)°,

Setting them equal,

We get,

⇒ 98 = 6x + 2,

Solving for x, we subtract 2 from both sides and then divide by 6:

⇒ 96 = 6x,

⇒ x = 16,

Therefore, the variable "x" must be 16 for "angle N" to be vertical to "angle M".

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The given question is incomplete, the complete question is

If an "angle N" is vertical to "angle M", and measure of "angle M" is 98° and the measure of angle N is (6x + 2)°, the x must be.

A relation represents a function when each input value is mapped to a single output value.

On a graph, a function is represented if the graph contains no vertical aligned points, that is, if there are no values of x at which we could trace a vertical line that would cross the graph of the function more than once.

Tracing a vertical line for any x > -3, the vertical line would cross the graph at two points, meaning that the relation is not a function.

As for the domain and the range, we have that:

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The confidence interval using the 95 percent level of significance is given as CI = (0.57, 0.63)

Solve for the sample proportion

= 602/1000 = 0.602

z* is the critical value from the standard normal distribution at the 95% confidence level = (1.96)

n =  sample size (1000)

CI = 0.602 ± 1.96√((0.602(1-0.602))/1000)

CI = 0.602 ± 0.032

0.602 - 0.032 , 0.602 + 0.032

CI = (0.57, 0.63)

Hence the confidence interval using the 95 percent level of significance is given as CI = (0.57, 0.63)

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A graph of quadrilateral M'N'O'P' after a vertical translation is shown below.

In Mathematics and Geometry, the translation of a graph downward simply means subtracting a digit from the value on the y-coordinate (y-axis) of the pre-image.

By translating the pre-image of quadrilateral MNOP vertically downward 4 units, the coordinates of quadrilateral M'N'O'P' include the following:

(x, y)                               →                  (x, y - 4)

M (-2, 5)                        →                  (-2, 5 - 4) = M' (-2, 1).

N (-3, 2)                        →                  (-3, 2 - 4) = N' (-3, -2).

O (-5, 2)                        →                  (-5, 2 - 4) = O' (-5, -2).

P (-6, 5)                        →                  (-6, 5 - 4) = P' (-6, 1).

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The slope represents that: a Fahrenheit degree change is equivalent to a Celsius change of 2 degrees.

The y-intercept of 32 represents that: It is the melting point of water on the Fahrenheit scale.

The general form of expression of Linear functions in slope intercept form is:

y = mx + c

where:

m is slope

c is y-intercept

Now, the equation is given as:

F = 2C + 32

Thus:

Slope = 2

y-intercept = 32

The slope is 2. This means that a Fahrenheit degree change is equivalent to a Celsius change of 2 degrees.

The y-intercept is 32. This is the melting point of water on the Fahrenheit scale.

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The value of the expression 9 squared will be 81.

In Mathematics, it is important to note that an expression is simply used to show the relationship between the variables that are provided or the data given regarding an information.

In this case, it is vital to note that they have at least two terms which have to be related by through an operator. Some of the mathematical operations that are illustrated in this case include addition, subtraction, etc.

The value will be:

= 9²

= 9 × 9.

= 81

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Answer:

[tex]8n=32[/tex]

Step-by-step explanation:

Muriel's algebraic expression for the phrase "the product of a number and 8" would be 8n, where n represents the number. When n = 4, the value of 8n would be 8 times 4, which is 32. Therefore, the correct expression and value is 8n = 32 when n = 4.

Answer:

8n=32

Step-by-step explanation:

got it right on homework

The amount of money that Nora would need to invest is $25913.

In Mathematics and Financial accounting, compound interest can be calculated by using the following mathematical equation (formula):

[tex]A(t) = P(1 + \frac{r}{n})^{nt}[/tex]

Where:

By substituting the given parameters into the formula for compound interest, we have the following;

[tex]72,000 = P(1 + \frac{0.064}{365})^{365 \times 16}\\\\72,000 = P(1 + 1.75 \times 10^{-4})^{5,840}\\\\72,000 = P(1.000175)^{5,840}[/tex]

P = 72,000/2.77849825425152

Principal, P = $25913.28 ≈ $25913

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There is a remarkable discrepancy in perceived organization support amongst female and male employees: women garnered a superior mean score (M=4.65, SD=0.58) as opposed to males (M=4.42, SD=0.70), t(198)=2.51, p<0.05.

Consequently, we recommend that the committee delve into the source of this divide and take steps to ensure that both sexes receive the same level of solidarity.

It was established that there was no distinct disparity in distributive justice perceptions between female and male employees: females earned a mean score of 4.16 (SD=0.64), while men attained a mean score of 4.14 (SD=0.61), t(198)=0.23, p>0.05.

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Answer:

n=-4

Step-by-step explanation:

5(3n+4n+3) = -125

First, combine like terms:

5(7n+3) = -125

Then, distribute the 5:

35n+15 = -125

Then, get n by itself:

35n= -140

Then, divide by 35 to get n by itself:

n = -140/35

Simplify

n = -4

The possible combinations of hand pies and gourmet cupcakes that the baker could sell for exactly $45.00 are:

The possible combinations of hand pies and gourmet cupcakes can be determined by finding the results of each combination using multiplication and addition.

Multiplication and addition are two of the four basic mathematical operations, including division and subtraction.

The unit cost of hand pies = $5

The unit cost of cupcakes = $3

The total sales revenue = $45

a. No hand pies and 15 gourmet cupcakes = $45 ($5 X 0 + $3 x 15)

b. 2 hand pies and 11 gourmet cupcakes = $43 ($5 X 2 + $3 x 11)

c. 3 hand pies and 10 gourmet cupcakes = $45 ($5 X 3 + $3 x 10)

d. 5 hand pies and 6 gourmet cupcakes = $43 ($5 X 5 + $3 x 6)

e. 6 hand pies and 5 gourmet cupcakes = $45 ($5 X 6 + $3 x 5)

f. 8 hand pies and 2 gourmet cupcakes = $46 ($5 X 8 + $3 x 2)

g. 9 hand pies and no gourmet cupcakes = $45 ($5 X 9 + $3 x 0)

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Answer:

192pie

Step-by-step explanation:

To find the area of a circle, it is pie (3.14) times r². The radius is 24, so it is 24² times pie. The area is 576 pie. Now to find the area of the shaded, you would do 1/3 times the area. 1/3 of 576 is 192. The answer is 192pie

Answer:

1 inch

Step-by-step explanation:

Answer:

1. 69.73 is the Area of the Rectangle. 50.27 is the Area of the Circle. 2. 120 is the area of the parallelogram, 25.13 is the area of the semi-circle

Step-by-step explanation:

For #1, We can to 15 * 8 to get area of what would be the whole rectangle. It is 120. Then, calculate area of the circle, pi * 4^2(4 because the 8 is a diameter. That totals to 50.27 for the circle. Subtract the two, 120-50.27 and you get 69.73 as the area of the shape excluding the circular portion.

For #2, We can apply the same formula for the circle, and divide it by two this time for 25.13 as the circle area. We can use the paralellogram formula of b*h (6*20) and we get 120 for that area. The total for the whole figure on #2 is 145.13 square units.

Note: unit for both is square units, as it is not specified.

The half-life of this radioactive element is approximately 2 years.

We have,

The decay of a radioactive element follows an exponential decay model of the form:

[tex]N = N_0 e^{-kt}[/tex]

where:

N0 is the initial concentration of the radioactive element

N is the concentration after time t

k is the decay constant

We are given that the element has decayed to 1/32 of its original concentration, which means that its current concentration is 1/32 times its initial concentration:

N/N0 = 1/32

Taking the natural logarithm of both sides and rearranging, we get:

ln(N/N0) = ln(1/32) = -3.465

Now we can use the formula for half-life, which relates the decay constant to the half-life t1/2:

t1/2 = ln(2) / k

We can solve for the decay constant k by using the information that the element has decayed to 1/32 of its original concentration in 10 years:

ln(N/N0) = -kt

-3.465 = -k x 10

k = 0.3465

Substituting this value of k into the formula for half-life, we get:

t1/2 = ln(2) / k = ln(2) / 0.3465 = 2.0 x 10^0 years = 2 years.

Therefore,

The half-life of this radioactive element is approximately 2 years.

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Answer:

17.

90 - 75 = 15

Answer: b

18.

ABC

Answer: A

19.

Answer: D

20.

Answer: D