simplify the expression showing each step.
3(2+7)-5

Answer:

4(5+3)

Step-by-step explanation:

I just did this question and I got it correct trust me ;)

Answer:

4(5 + 3)     (C or 3)

Step-by-step explanation:

Edge 2020

Answer:

$37.60

Step-by-step explanation:

If 7 shirts = 32.90 then (32.90/7) x 8 = 37.60

Answer:

The length of the frame is 17

Step-by-step explanation:

The computation of the length of the frame is shown below:

As we know that

The perimeter of a rectangle is

= 2 (length + width)

where,

let us assume the width be x

So, the length is x - 6

And, the perimeter is 80 yards

So, now put these values to the above formula

80 yards = 2 (x - 6+ x)

80 yards = 2 (2x - 6)

80 yards = 4x - 12

92 = 4x

x = 23

So, the length of the frame is

= 23 - 6

= 17

Answer:

x = 18

Step-by-step explanation:

Given:

Finding x for which 3b = 5a:

Answer:

x = 18

Step-by-step explanation:

Plug in 4x-7 for b and 2x+3 for a in 3b = 5a

3(4x-7) = 5(2x +3)

Solve for x:

12x-21 = 10x+15

2x = 36

x=18

Answer:

The answer is

2.4z+1.2z=0.7+6.5.

3.6z=7.2.

z=7.2/36.

z=2

Part A

The equation would be y = 12x+200 where x is the number of hours and y is the amount saved. The 200 is what you already have, and then you add on 12x additional dollars.

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Part B

equation would be y = -0.10x+12. You start off with 12 gallons and each time you use up 0.10 gallons of gas for each mile you drive, so in total you use up 0.10x gallons

==============================================

Part C

Equation is y = 2x+60. You add on 2x additional points to the 60 you already have

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Part D

x is the number of messages and y is the total monthly bill, so the equation would be y = 0.25x + 35

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Part E

eating x cookies, at 120 calories a piece, means y = 120x is the total number of calories you consume per day. This is just considering the cookies of course and not other meals.

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In each case, the independent variable is the variable that is allowed to change and you know this value (or are given it). For instance, you know how many miles you drive and it varies. The dependent variable relies on the value chosen for the independent variable. So as x changes, then so does y.

Answers & Step-by-step explanation:

Let's define the two terms that we need to identify:

Independent variable: A variable that you have control over.

Dependent variable: A variable you cannot control and depends on other factors.

Let's solve your problems!

___________________________________________________________

Amount saved: dependent variable

Amount earned: independent variable

Explanation:

The amount you can save depends on how much you earn.

___________________________________________________________

Amount of gas: dependent variable

Amount you drive: independent variable

Explanation:

The amount of gas you have affects how much you can drive.

___________________________________________________________

Test grade: dependent variable

Extra credit you gain: independent variable

Explanation:

Your test grade is dependent on the amount of extra credit you earn.

___________________________________________________________

Monthly bill: dependent variable

Number of texts sent: independent variable

Explanation:

The monthly bill is dependent on the number of texts sent.

___________________________________________________________

Amount of calories per day: dependent variable

Amount of cookies eaten: independent variable

Explanation:

The number of calories eaten each day is dependent on how many cookies you eat.

___________________________________________________________

Answer:

x=-15

Step-by-step explanation:

4x-3x=9-24

1x=-15

x=-15

Answer:

- 56

Step-by-step explanation:

JT = CJ + CT

4x + 2 = 8x + 5 + 55

4x + 2 = 8x + 60

4x - 8x = 60 - 2

- 4x = 58

x = 58/-4

x = -29/2

x = - 14.5

JT = 4x + 2 = 4(-14.5) + 2 = - 58 + 2 = - 56

Answer:

-1.5

Step-by-step explanation:

1,5-2=-.5

-.5*2=-1.5

Answer:

27m3- is the answer equals to 8n 3

Answer:

d=126 degrees

z=28 units

Answer:

Step-by-step explanation:

We can simplify (cross multiply) to get [tex]xy^2=wz[/tex]

Then we easily simplify to get [tex]y=\sqrt{\frac{wz}{x}},\:y=-\sqrt{\frac{wz}{x}};\quad \:w\ne \:0,\:x\ne \:0[/tex]

Answer:

z < 2

Step-by-step explanation:

4z - 5 < 3

4z < 8

z < 2

Answer:

Step-by-step explanation:

A = (5,-5)

B = (-1,-5)

AB = (5 - - 1) + (-5 - - 5)

AB = 6

=================

Mid Point CD

C = - 3,4

D = 6,3

Midpoint = (-3 + 6)/2 , (4+3)/2

Midpoint = 3/2, 7/2

Midpoint = 1.5, 3.5

Answer:

Cost for 35 songs:  1(35)+11=46

Cost for s songs:  1s+11

Step-by-step explanation:

Answer:

[See Below]

Step-by-step explanation:

3/4 = 0.75

1/3 = 0.333..

5/8 = 0.625

Largest to Smallest: 3/4, 5/8, 1/3

Answer:

5x^2 + -3

Step-by-step explanation:

For this problem, we will simply simplify the expression by combining like terms.

(-3x^3 - 7x^5 - 3) + (5x^2 + 3x^3 + 7x^5)

= 7x^5 + -7x^5 + 3x^3 + -3x^3 + 5x^2 + -3

= 0 + 0 + 5x^2 + -3

= 5x^2 + -3

Thus, the simplified expression is 5x^2 + -3.

Cheers.

Answer:

x = -2

Step-by-step explanation:

10x+8=3x-6

subtract 10x-3x

7x+8= -6

subtract -6-8

7x=-14

divide 7 into -14

x = -2

Hope this helps!

Answer:

Step-by-step explanation:

We are given that the factory produces  42,000  computer monitors per day

And the claim is of this amount produces fewer than 660 are defective.

a random sample shows that of 240 monitors 2 are defective

to verify the factory managers claim we need to know how many 240s are there in 42000

=42000/240= 175

Since each 240 will give 2 defective monitors

175 will give= 175*2= 350

350 is less than 660 hence the managers claim is correct

Answer:

see below

Step-by-step explanation:

1/12 - 5/6 = -9/12

We need to get a common denominator of 12

1/12 - 5/6*2/2 = -9 /12

1/12 - 10/12 = -9/12

Since the denominators are the same, we can subtract the numerators

1-10 = -9

-9/12 = - 9/12

We can simplify -9/12 by dividing the top and bottom by 3

-9/3 = -3

12 /3 = 4

-9/12 = -3/4

Answer:

see below

Step-by-step explanation:

1/12 - 5/6 = -9/12

1st, we need to identify the Least Common Multiplier of 12 and 6

in this case, the LCM is 12

for 5/6 = (5*2) / (6*2) = 10/12

2nd, adjust the fractions based on the LCM

= 1 / 12  -  10 / 12

= 1 - 10 / 12

= -9 / 12 ---- simplify   -3 / 4

Greetings from Brasil...

Be that unknown number X

Then we can write the following expression:

X + 4.7 = 8.1

Answer:

4 is twice a number of 2 so the answer would be 14

Step-by-step explanation:

Answer:

y=15+-6x

Step-by-step explanation:

y = -6x + 15

Reorder the terms:

y = 15 + -6x

Solving

y = 15 + -6x

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Simplifying

y = 15 + -6x

Step-by-step explanation:

[tex]6x - 15 = y \\ 6x = y + 15 \\ \frac{6x}{6} = \frac{y + 15}{6} \\ x = \frac{y + 15}{6} \\ x = \frac{y}{6} + \frac{5}{2} [/tex]

Answer:

o45

Step-by-step explanation:

Because 45 is the largest number.

Answer:

The subset of rational numbers

Step-by-step explanation:

Rational numbers are numbers that can be expressed in the form a/b where ad b are integers. The number [tex]1.\overline5[/tex] is a number with a recurring decimal of 5 and every recurring decimal can be expressed in the form a/b where a and b are both integers therefore, every number with recurring decimal is a rational number.

In the question,  [tex]1.\overline5[/tex]  can be written as follows;

[tex]1.\overline5 = \dfrac{14}{9}[/tex] or [tex]1.\overline5 = 1\dfrac{5}{9}[/tex].

Answer:

D: an endpoint at one end and an arrow on the other or answer hope this helped,

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

A line segment has an endpoint at both ends. A has arrows at both ends.A ray has a endpoint at one end and an arrow at the other.

Answer:

B

Step-by-step explanation:

The equation of a horizontal line is

y = c

where c is the value of the y- coordinates the line passes through.

The line passes through (- 3, 8 ) with y- coordinate of  8, thus

y = 8 ← equation of horizontal line

Answer:

To solve square root equations, isolate the radical on one side of the equation. Then, raise both sides of the equation to the same power.

Source:

www.basic-mathematics.com/how-to-solve-radical-equations.html

Hope this helps!

Answer:

1290

Step-by-step explanation:

15 x 86 = 1290