Please help

Isolate a variable in each system. You may need to use the distributive property to simplify the equation. Show your work.

Answer:

63

Step-by-step explanation:

area=length×width so 9×7=63

Answer:

5x-30

Step-by-step explanation:

x+15+4x-45

5x+14-45

5x-30

23$ is the total cost .

What is cost and example?

the total cost = 13$ + 10$= 23$ because he losses a hour in work .

13$ and additionally spending 10$ in carnival .

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This could be wrong, but I think your answer is [tex]x=-2x^3+\frac{900^{\circ \:}x-360^{\circ \:}}{9}[/tex]

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Hope this helps!

Have a great day and God bless! :)

So the change of rate of x is -1/3 .

The Derivative of a function of a real variable measures the sensitivity to change of the function value with respect to a change in its argument. Derivatives are a fundamental tool of calculus.

Given that object is decreasing at constant rate of 2 units per second so we have [tex]y = 2x^2 + 1[/tex]

[tex]\frac{dy}{dt} = 4x \frac{dx}{dt}[/tex]

given dy/dt = -2

when x = 3/2

-2 = 4(3/2) dx/dt

-2 = 6 dx/dt

dx/dt = -2/6

         = -1/3

Hence the change of rate of x is -1/3 .

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Answer:

for part c

JM=36

AD=12

36=3

JKLM is 3x bigger than polygon ABCD

The point slope of the the line using the point (3,2) and slope 5 is (y-2)=5(x-3).

Given that A line intersects the points (3, 2) and (5, 12)  and asked to write an equation of line passing through (3,2) and having slope as 5.

Point slope form:

The point-slope form of a stright line is y-y1=m(x-x1)

Here (x1,y1) is the fixed point with which the line passes and m is the slope of the line

Here, (x1,y1)  is given as (3,2) and m(slope)=5

The equation straight line in point-slope form is (y-2)=5(x-3).

Therefore,The point-slope form of the the line using the point (3,2) and slope 5 is (y-2)=5(x-3).

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We get the number of elements in the set B will be 62.

The universal set is A consists of the primary one hundred positive integers.

Set B is a subset of A.

One possibility is that B consists of the primary 62 positive integers.

Then only, the greatest quantity that may be shaped through the sum of any factors of set B is 123.

The number of elements in set B is equal to  62.

We also can selectively interchange one or more elements of B and and add them in complement of B

In most of these instances the number of elements in set B might be 62.

Therefore, we get the number of elements in the set B will be 62.

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Answer: B

Step-by-step explanation: you see how its by the 2 that means that its going to be where the 3 is

Answer:

4,545.45 crates

Step-by-step explanation:

.11x = 500

Divide both sides by .11

x = 4,545.45

The number of crates she picked algebraically is 4545.

Let us consider the variable "c" to represent the number of crates Brianna picked.

We know that she receives 11 cents per crate.

1 crate = $0.11 (11 cents)

Her total earnings from picking "c" crates can be expressed as:

Earnings = 0.11c

Now, we know her total piecework earnings for last week were $500. So, we can set up an equation:

Total Earnings = $500

0.11c = $500

To find the number of crates Brianna picked, we need to solve for "c":

c = $500 / 0.11

c = 4545.45...

c = 4545 crates

So, algebraically, Brianna picked approximately 4545 crates last week.

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Answer:

270

Step-by-step explanation:

The area is the same as the original area multiplied by the square of the scale factor.

Answer: 39.5 cm long

Step-by-step explanation: The equation can also be written s 72=2x+7, (x= length of short piece) (x+7+length of long piece.):

72=2x+7

72-7=2x

65=2x

x=32.5

Then to find out the long piece:

x+7

32.5+7=39.5

The pair of triangles is similar with the ASA similarity condition

The figure that completes the question is added as an attachment

From the figure, we have the following properties:

This means that the pair of triangles is similar with the ASA similarity condition.

Since the triangles share the same point

So, the transformation to carry the triangles onto one another is dilation

Hence, the pair of triangles is similar with the ASA similarity condition

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A researcher can make generalizations about a population by utilizing inferential statistics, which is a benefit.

Two purposes dominate the use of inferential statistics: estimating population numbers (for example, the mean SAT score of all 11th graders in the US). testing hypotheses to make population-level judgments (for example, the relationship between SAT scores and family income).

Inferential statistics that are helpful in the design of experimental and quasi-experimental studies or in the assessment of program outcomes.

When comparing the average performance of two groups on a single measure to check if there is a difference, one of the simplest inferential tests may be performed. You might be interested in learning whether math test results between eighth-grade boys and girls differ or if a program group differs from a control group in terms of the outcome measure.

The t-test for differences between groups should always be taken into consideration when comparing the average performance of two groups.

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The response to this question is that p has a value of 8, or the cube root of 8. i.e. p=∛8.

An integer y such that y³ = x is known as the cube root of a number x in mathematics. All nonzero complex numbers have three different complex cube roots, while all nonzero real numbers have exactly one real cube root and two complex conjugate cube roots. When we multiply a factor three times to obtain a number, we have obtained the cube root of that factor. Three cube root of, ending cubic root is the sign for the cube root. In contrast to cubing an integer, finding its cube root is a mathematical operation.

According to the equation, p³=8

We can clearly see that the power of p is 3.

Now by taking cube root on both the sides, we can see that the value of p is

∛p³=∛8

⇒p=∛8        

The value of p in the equation cube root of 8.

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Total 790 number of handshakes occur within the group.

According to the given question.

Total number of people = 50

Number of people who know each other = 30

Number of people who know no one = 20

Since, 20 people doesn't knw each any one, so they will shake hands.

So, the total number of hand shakes by these 20 people

= 20(20 -1)/2

= 10(19)

= 190

Also, we have to consider  that other 30 people will also shake hands with these 20 people.

So, the total number of hanshakes by these 30 and 20 people = 30 × 20 = 600

Therefore, the total number of handshakes occur within the group

= 600 + 190

= 790

Hence, total 790 number of handshakes occur within the group.

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In the given statement is:

In simple linear regression the estimated slope from the regression of y on x is the same as the estimated slope in the regression of x on y.

If Y depends on X then the regression line is Y on X.

Y is dependent variable and X is independent variable. If X depends on Y, then regression line is X on Y and X is dependent variable and Y is independent variable. The regression equation Y on X is Y = a + bx, is used to estimate value of Y when X is known.

What is Simple linear regression?

Simple linear regression is a regression model that estimates the relationship between one independent variable and one dependent variable using a straight line. Both variables should be quantitative.

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Step-by-step explanation:

2 3 4 6...................

Answer:

The empty set

Step-by-step explanation:

The square of a real number is non-negative, and thus the left hand side is always positive.

Answer:

Step-by-step explanation:

What must be added to 3x + y to get 2x + 3y?

3x + y + z = 2x + 3y

3x + z = 2x + 3y - y

3x + z = 2x + 2y

z = 2x-3x+2y

z = -x+2y

-------------------

check

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

2x + 3y

the answer is good

Answer: .17 m/h

Step-by-step explanation: One centimeter is .01 meters/one hundredth of a meter, so you just need to move the decimal two digits to the right to convert.

Answer:

[14 -4 8]

Step-by-step explanation:

[4+10 -6+2 8+0]

[14 -4 8]

The diagram depicting the construction of copying a line segment indicates that AB = CD = 6.7 cm.

A line segment, which can be expressed as a segment of a line, has definite length. It is a line drawn that has two endpoints.

A line segment can be named by the capital letters placed at the endpoints.

Copying a line segment, therefore gives a segment of equal length as the original line segment.

Given that the length of AB = 6.7 cm, and the line segment, CD, is obtained by copying segment AB, we have;

Length of CD = Length of AB = 6.7 cm

Therefore;

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The identify each representation's associated average rate of change. The average rate of change for the functions r, q, p is 5, 5, 7/3 over the range [0.3].

Given that,

We have to find over the range [0, 3], calculate each function's average rate of change. The identify each representation's associated average rate of change.

The equation for f(x) average's rate of change across [a,b] is

m=[tex]\frac{f(b)-f(a)}{b-a}[/tex]

The function provided is

r(x)=x²+2x-5

r(0)=(0)²+2(0)-5=-5

r(3)=(3)²+2(3)-5=9+6-5=15-5=10

Now,

m₁=[tex]\frac{r(3)-r(0)}{3-0}[/tex]

m₁=[tex]\frac{10+5}{3}[/tex]

m₁=15/3

m₁=5

It is clear from the graph that q(0)=2 and q(1)=3.

Now,

m₂=[tex]\frac{q(1)-q(0)}{1-0}[/tex]

m₂=[tex]\frac{3+2}{1}[/tex]

m₂=5/1

m₂=5

It is evident from the above table that s(0)=-2 and s(3)=5.

Now,

m₃=[tex]\frac{s(3)-s(0)}{3-0}[/tex]

m₃=[tex]\frac{5+2}{3}[/tex]

m₃=7/3

Therefore, The average rate of change for the functions r, q, p is 5, 5, 7/3.

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Step-by-step explanation:

the slope-intercept form :

y = ax + b

"a" being the slope, "b" being the y-intercept (the y value when x = 0).

but we have the slope and a point.

so, we can start with the point-slope form and then transform it :

y - y1 = a(x - x1)

"a" is again the slope, (x1, y1) is the given point.

so, we have

y - 3 = 4(x - -4) = 4(x + 4) = 4x + 16

y = 4x + 19

and that's it.

The Percent Change in the number of cupcakes is 60%

The given parameters are:

Initial number of cupcakes = 70

Final number of cupcakes = 112

The Percent Change in the number of cupcakes:

Percent = (Final number of cupcakes - Initial number of cupcakes)/Initial number of cupcakes  * 100%

This gives

Percent = (112 - 70)/70 * 100%

Evaluate the quotient

So, we have

Percent = 0.6 * 100%

Evaluate the product

So, we have

Percent = 60%

Hence, the Percent Change in the number of cupcakes is 60%

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Answer:

w is -4

Step-by-step explanation:

W is -4 because a positive number times a negative number is always a negative that is why the answer is a negative and 6 times 4 is 24 but for the 24 to be a negative the 4 has to be a negative 4.