Dr johnson is a clinical physiologist looking to test out a new therepy to help people that are scared of spiders he measured each person fear of spiders before the therapy and after the therapy in both colums of data he used the pulse rate of people when confronted by an actual spiders

Answer:

x= 3x/7 - 10/7

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

Answer:

Step-by-step explanation:

x+2=4(2x + 3)-3

x+2=8x+9

2=8x+9−x

2=7x+9

2-9=7x

-7=7x

-7/-7=7x/-7

-1 = x

x=-1

Answer: a ≥ -1/3

Step-by-step explanation:

If we want the result of the expression to end up as a real number, the fraction under the square root cannot be negative.

Therefore, we can make an equation like this:

(1+3a) / 25 ≥ 0

Multiply by 25

1 + 3a ≥ 0

Subtract 1

3a ≥  -1

Divide by 3

a ≥  -1/3

This triangle is an acute triangle because all three angles measure less than 90 degrees.

It is also a scalene triangle because all three sides have different lengths. I know this because an acute triangle is defined as a triangle where all three angles measure less than 90 degrees and a scalene triangle is defined as a triangle where all three sides have different lengths.

According to the lengths of sides, triangles can be classified into :
Scalene.
Isosceles.
Equilateral.

Different Types of Triangles Based on Angles are :
Acute-angled. Obtuse-angled. Right-angled.

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The histogram's smallest and greatest ranges, 0 to 4.9 and 45 to 49.9, respectively, represent the percentage of residents in each state and the District of Columbia who identify as Hispanic or Latino.

The histogram's smallest and greatest ranges, 0 to 4.9 and 45 to 49.9, respectively, represent the percentage of residents in each state and the District of Columbia who identify as Hispanic or Latino.

Percentage refers to quantifying anything per 100, as the word indicates.You can get the percentage, for instance, by dividing your score by 100.

Given: The histogram summarizes the proportion of persons who identify as Hispanic or Latino in each state and the District of Columbia,

The x-axis displays the population's frequency, while the y-axis displays the population's Hispanic or Latino proportion.

Consider the graph to determine the narrowest range possible,

The smallest possible range = 0 - 4.9

Calculate the broadest range feasible while keeping in mind the graph,

The largest possible range = 45 - 49.9

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Answer: 4-6 inches

Step-by-step explanation: Hope this helps

Answer:

Feathers are 214 in or less

Step-by-step explanation:

The measure of FD = 16.001 units

Consider following diagram.

We can observe that ΔABE and ΔACD are similar triangles.

By definition of similar triangle the sides of ΔABE and ΔACD must be in proportion.

AB/AC = AE/AD

Let us assume that AB = x

x/(x + 12) = 6/15

15x = 6(x + 12)

15x = 6x + 72

9x = 72

x = 8

So, AB = 8 units

And AC = 12 + 8

       AC = 20 units

Consider right triangle ΔACD

Here, AC = 20, AD = 15

Using Pythagoras theorem,

AC² = AD² + CD²

CD = [tex]\sqrt{AC^2 - AD^2}[/tex]

CD = [tex]\sqrt{20^2 - 15^2}[/tex]

CD = 13.23 units

For right triangle CDF,

Using Pythagoras theorem,

FD² = CD² + CF²

FD² = 13.23² + 9²

FD = 16.001

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The value of the expression or equation is 142

An algebraic expression is an expression built up from constant algebraic numbers, variables, and the algebraic operations (addition, subtraction, multiplication, division and exponentiation by an exponent that is a rational number)

The algebraic word problem says:

188 fewer than B is 330

Express in equation form to have

B-188 = 330

Making B the subject of the formula

B = 330+188

B=510

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The solution of the given expression is -13. The correct option is A.

PEMDAS stands for the sequence of operations for multi-step mathematical expressions. The letters PEMDAS stand for parentheses, exponents, multiplication, division, addition, and subtraction.

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication and division.

Given the expression is −8+(6+4)÷(−2). The expression by using the PEMDAS will be solved as below,

E = −8+(6+4)÷(−2)

First, solve the bracket and then division,

E = -8 + ( 10 ) ÷ (−2)

E = -8 - 5

E = -13

Hence, the solution is -13.

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Answer:

83.7

Step-by-step explanation:

Substitute v = 3 and w = 4:

[tex]\displaystyle{12.3 \cdot 3 + 11.7 \cdot 4}\\\\\displaystyle{= 36.9 + 46.8}\\\\\displaystyle{= 83.7}[/tex]

Therefore, the value is 83.7

The value of the equation is A = √ ( -6 + x )

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

Substituting the values in the equation , we get

A = √ - ( 6 - x )    be equation (1)

On simplifying the equation , we get

Remove the parentheses for addition or subtraction

A = √ ( -6 + x )

when the value of A = 0

√ ( -6 + x ) = 0

Taking squares on both sides of the equation , we get

-6 + x = 0

Adding 6 on both sides of the equation , we get

x = 6

Therefore , the value of x is 6

Hence , the equation is A = √ ( -6 + x )

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A)

House 1 value is an exponential function.

House 2 value is a linear function.

B)

House 1:

f(x) = 253,980 x

House 2:

f(x) = 256,000 + 7000x

C)

House 1 will have the greatest value.

The significant difference in the value of either house after 45 years is $168844

The value of house 1 after 45 years:

f(45) = $739844

The value of the house 2 after 45 years:

f(45) = $571000

A function is a relationship between inputs where each input is related to exactly one output.

Example:

f(x) = 2x + 1

f(1) = 2 + 1 = 3

f(2) = 2 x 2 + 1 = 4 + 1 = 5

The outputs of the functions are 3 and 5

The inputs of the function are 1 and 2.

We have,

House 1:

The value of the hours is described by an exponential function.

There is an increase of 2% per year.

f(x) = 253,980 x [tex]1.02^x[/tex]

Where x is the number of years.

House 2:

The value of the hours is described by a linear function.

There is an increase of $7000 per year.

f(x) = 256,000 + 7000x

Where x is the number of years.

Now,

For x = 45,

f(45) = 253,980 x [tex]1.02^x[/tex]

f(45) = 253,980 x [tex]1.02^{45}[/tex]

f(45) = $739843.74

f(45) = $739844 ____(1)

f(x) = 256,000 + 7000x

f(45) = 256,000 + 7000 x 45

f(45) = 256,000 + 315000

f(45) = $571000 ______(2)

From (1) and (2),

House 1 will have the greatest value.

The significant difference in the value of either house after 45 years

= $739844 - $571000

= $168844

The value of house 1 after 45 years:

f(45) = $739844

The value of the house 2 after 45 years:

f(45) = $571000

Thus,

The Part  A, Part B, and Part C are given above.

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For the given situation sentence represents amount of the sparkling water bought by Layla is given by :

Option A). Layla bought 20milliliters less sparkling water than 2 liters.

Sparkling water in each pack is equal to 330 milliliters

Number of packs of sparkling water bought by Layla is equal to 6 packs

Amount of sparkling water in 6 packs = 330 milliliters

⇒ Amount of sparkling water in 6 packs = ( 330 × 6 ) milliliters

⇒ Amount of sparkling water in 6 packs = ( 1980 ) milliliters

1 liter = 1000milliliters

⇒ 2 liter = 2000milliliters

1980 is less than 2 liters

Difference between 1980milliliters and 2 liters

2000 - 1980 = 20milliliters

Therefore, sentence which represents the given situation of sparkling water bought by Layla is option A) Sparkling water bought by Layla is 20ml less than 2L.

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Check the picture below.

The equivalent expression for the given expression is 1/2⁹⁸.

Equivalent expressions are expressions that work the same even though they look different. If two algebraic expressions are equivalent, then the two expressions have the same value when we plug in the same value for the variable.

The given expression is (2⁻¹⁰/4²)⁷.

Now, (2⁻¹⁰/(2²)²)⁷

= (2⁻¹⁰/2⁴)⁷

= (1/2¹⁰×2⁴)⁷

= (1/2¹⁰⁺⁴)⁷

= (1/2¹⁴)⁷

= 1/2⁹⁸

Therefore, the equivalent expression for the given expression is 1/2⁹⁸.

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Answer: 31

Step-by-step explanation:

4 3/7 = 31/7

31 × 7 = 217

7 × 1 = 7

217/7 = 31

The difference in average birthweight between smoking mothers and non- smoking mothers is, mothers who smoke cigarettes during pregnancy have, on average, lower birthweight children.

When cigs=0, the bwght is 119.77 ounces.

The average birth weight of the baby when the mother is not a smoker is 119.77 ounces.

When cigs=20,

bwght = 119.77 − 0.514(20) = 109.49,

The bwght is 109.49 ounces.

However, as more cigarettes are smoked, the birthweight of the baby decreases at the rate of 0.5138 ounce for every additional cigarette smoked per day.

Obviously, mothers who smoke cigarettes during pregnancy have, on average, lower birthweight children.

So, The difference in average birthweight between smoking mothers and non- smoking mothers is, mothers who smoke cigarettes during pregnancy have, on average, lower birthweight children.

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The average rate of change of the account value from t = 0 to t = 5 is the change in the account value divided by the change in time, or (A(5) - A(0))/(5 - 0).

We can substitute the given function into the equation:

A(t) = 50,000(1.02)^t

So,

A(5) = 50,000(1.02)^5

and

A(0) = 50,000(1.02)^0

Now we can substitute these values in the equation of average rate of change:

(A(5) - A(0))/(5 - 0) = (50000(1.02)^5 - 50000(1.02)^0) / (5-0)

This simplifies to

(50000(1.02)^5 - 50000) / 5

Which is approximately equal to 67,622.05

So the average rate of change of the account value from t = 0 to t = 5 is approximately 67,622.05.

Answer:12 feet

Step-by-step explanation:

The negation of the following statements are a. R: Ron did not go to school. b. S: A triangle does not have 3 sides. c. T: x ≠ 9 d. U: 20 is not a multiple of 3.

It's vital to know the opposite of a particular mathematical statement from time to time in mathematics. This practice is known as "negating" a claim. Remember that if a claim is true, then the negation must be false.

The negation of the following statements is:

a. R: Ron did not go to school.

b. S: A triangle does not have 3 sides.

c. T: x ≠ 9

d. U: 20 is not a multiple of 3.

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Answer:

Step-by-step explanation:

well, it will be 13/20 because you can't simplify our ya

Answer:no answer

Step-by-step explanation:no explanation help

If m∠DAC = 65°, m∠DAC and m∠BCA can be classified as alternate interior angles. And m∠BCA = 65°.

Alternate interior angles of a rectangle are congruent, which implies they are equal in measure and are formed by the intersection of the opposite sides of the rectangle.

Considering the diagonal AC from one corner of the rectangle to the opposite corner, the angles formed at the intersection of the non-parallel sides will be congruent

Therefore, the angles m∠DAC and m∠BCA are alternate interior and m∠DAC = m∠BCA, which makes m∠BCA = 65°

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Answer: (30, 5)

Step-by-step explanation:

Since the 3 red angles are equal, then they are all 60 degrees, which shows that the triangle is equilateral.  Therefore, 8y = 40, so y = 5

Also, since BD = BC, triangle BDC is isosceles. We know that angle BDC = 180 - 60 = 120, so 2x = 60 and x = 30

(x, y) = (30, 5)

By substituting the values of A, C, and D, the equation modelling the function is g(x) = 3·sin(x - π/2) - 4.

From the question, we have the following information;

The vertical distance of the sine function = 3 × The parent function

∴ A = 3

Given that the horizontal shift left = π/2 units (from an online source with a similar question)

The vertical shift down = 4 units

The given function g is g(x) = A·sin(x + C) + D

Where,

A is the amplitude = The maximum displacement from the rest or equilibrium position = 3

C is the horizontal shift = -π/2 (The negative sign is for the shifting to the left)

D is the vertical shift = -4 (The negative sign is for a shift in the downward direction)

Therefore, the equation modelling the function is g(x) = 3·sin(x - π/2) - 4.

--The given question is incomplete; the complete question is

"Enter the correct answer in the box. Function g is the result of these transformations on the parent sine function:

Vertical stretch by a factor of 3.

Horizontal shift left units.

vertical shift down 4 units.

Substitute the values of A, C, and D to complete the equation modelling function g. g(x) = Asin(x + C) + D."--

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The area of the ar (APQ) = 18  cm ^ 2 for the given triangle ABC.

Given that:

Then, area (ΔABD) = area (ΔADC)

And, area  (ΔABD) = 1/2 area (ABC)   eq.....(i)

Thus, In ΔABD, PQ is the median, as PQ are the mid points on AB and AD respectively.

Then,

ar (APQ) =  1/2 ar(ΔABD)

ar (APQ)  = 1/2 × [1/2 ar(ABC)]  ....... (Use eq (i))

ar (APQ)  = 1/4 ar(ΔABC)

ar (APQ)  = 1/4 *72 cm ^ 2

ar (APQ)  = 18  cm ^ 2

Thus, the area of the ar (APQ) = 18  cm ^ 2 for the given triangle ABC.

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According to the area of circle, the area covers the dartboard in which you can land is 254.34 square inches.

In math the term called area of circle is defined as the process of π multiplied by the square of the radius and area of a circle(A) when the radius 'r' is given is πr² here the value of π is approx. 3.14 or 22/7.

Here we know that the dartboard has a radius of 9 inches.

And the value of area covers the dartboard in which you can land is calculated as,

Where the value of r is 9, then the area is calculated as,

=> A = π(9)²

When we expand the terms, then we get,

=> A = π x 81

Apply the value of π as 3.14, then we get,

=> A = 3.14 x 81

=> A = 254.34

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The length of segment PR is given by the following option:

The angle measure of the altitude is given as follows:

m < RSP = 5x + 40º.

The altitude of the triangle is always going to form a right angle, with measure of 90º, hence the value of x is obtained as follows:

5x + 40 = 90

5x = 50

x = 50/5

x = 10.

The length of segment PR is given as follows:

PR = x - 1.

As the value of x is of x = 10, the numeric length of the segment is given as follows:

PR = 10 - 1

PR = 9.

Meaning that the correct option is given by option C.

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A constraint is a restriction or limitation on the possible solutions of a problem or system. In the context of a system of inequalities, a constraint is an inequality that must be satisfied by any solution of the system. A system of inequalities is a set of multiple inequalities that must all be satisfied simultaneously. Solving a system of inequalities involves finding the set of all possible solutions that satisfy all of the constraints. This can be done graphically by graphing the inequalities and finding the intersection of their solution sets, or algebraically by isolating the variables and solving for their values.

The two Caroline's marbles are hence blue.

Adding a whole number to the numerator multiplies it. No change is made to the denominator. In the simplest possible way, simplify the product. The denominator stays the same since a whole number's denominator is 1, when expressed in fractional form.

The denominator stays the same since a whole number's denominator is 1, when expressed in fractional form.

Adding a whole number to the numerator multiplies it. No change is made to the denominator. In the simplest possible way, simplify the product. The denominator stays the same since a whole number's denominator is 1, when expressed in fractional form.

3 Caroline's marbles are blue.

In line with the assertion made:

16 marbles total, 1/8 of which are blue belong to Caroline.

16 marbles are included in the total.

Blue portions of them

calculate the proportion of blue marbles in Caroline's collection.

marbles that are blue in number =1/8 * 16 = 2.

The two Caroline's marbles are hence blue.

The complete question is,

Caroline has sixteen marbles. eight of them are blue. what proportion of Caroline's marbles are blue?

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Answer:

50/3

Step-by-step explanation:

5 5/7 divided by 1 3/5 times 4 2/3

5 5/7 = 40/7

1 3/5 = 8/5

4 2/3 = 14/3

40/7 divided by 8/5 = 40/7 times 5/8 = 200/56

200/56 times 14/3 = 2800/168 = 400/24 = 100/6 = 50/3

So, the answer is 50/3