Acre Middle School spent $1443.20 on 55 math books. How many did each book cost

Step-by-step explanation:

y-y1=m(x-x1)

y-7=4(x+8)

y-7=4x+32

4x-y=-39

Answer:

y = 4x + 39

Step-by-step explanation:

Let's take another point (x,y) on the line.

Slope (m) = change in y ÷ change in x

∴ m = [tex]\frac{y - 7}{x - -8} = 4[/tex]

y = 4x + 32 + 7

y = 4x + 39

Step-by-step explanation:

An equilateral triangle is a triangle with three equal sides. The perimeter of an equilateral triangle varies directly with the length of one side. What is an equation that relates the perimeter p and length of a side?

See, let us consider the sides as l as per question.

And, perimeter as p as per question.

We know that:-

The sum of all the boundary gives us the perimeter of the figure.

It is Equilateral Triangle, so the equation will be:-

[tex]l + l + l = p[/tex]

Now, adding it up, we get

[tex]3l = p[/tex]

So, 3l=p relates the side and perimeter.

Hope it helps :)

Answer:

i think it is the 4th one

Step-by-step explanation:

yo it would be cool if you would give me brainliest

Answer:

Complementary Angles

Step-by-step explanation:

Complementary angles are angles whos measures add up to 90 degrees! The angles in the picture can also be described as adjacent angles, because they share the same vertex.

So these angles are technically both complementary and adjacent, but they are more specifically, complementary.

I hope I was of assistance! #SpreadTheLove <3

Answer:

I believe there are four terms in this expression.

Answer:

TRY B

Step-by-step explanation:

TRY B

Answer: x= -7

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

its right

Answer:-

Option A - <1 &<2

Answer:

3 1/16

Step-by-step explanation:

3 is the whole number

Answer:

0.2815

Step-by-step explanation: you need to mulitply 3/4 times 3/8 and you will get  0.2815 hope this helped  

Answer:

[tex]\boxed {r = \frac{31}{3}}[/tex]

Step-by-step explanation:

To find the value of [tex]r[/tex], write an expression by using the following measurements of both [tex]\overline {DG}[/tex] and [tex]\overline {GM}[/tex], then you solve for [tex]r[/tex]:

[tex]\overline {DG} = r + 3[/tex]

[tex]\overline {GM} = 4r - 28[/tex]

[tex]r + 3 = 4r - 28[/tex]

Solve for [tex]r[/tex]:

[tex]r + 3 = 4r - 28[/tex]

[tex]x + 3 - 4r = 4r - 4r - 28[/tex]

[tex]-3r + 3 = -28[/tex]

[tex]-3r + 3 - 3 = -28 - 3[/tex]

[tex]-3r = -31[/tex]

[tex]\frac{-3r}{-3} = \frac{-31}{-3}[/tex]

[tex]\boxed {r = \frac{31}{3}}[/tex]

So, the value of [tex]r[/tex] is [tex]\frac{31}{3}[/tex].

Answer:

42.23

Step-by-step explanation:

The bill given after the voucher was used was 36.72.

If we multiply 36.72 with the voucher amount of 15% or .15

36.72*.15=5.508

We then have to add 5.508 to 36.72.

36.72+5.508=42.228=42.23 when rounding up.

Answer:

5,4.09,4,-2.52,-3,-543

Look : angle 1 + angle 3 = 180°

because it is a straight line.

Thus ;

[tex]5x + 35 + 4x + 10 = 180[/tex]

Simplification

[tex]9x + 45 = 180[/tex]

Subtract sides 45

[tex]9 x = 180 - 45[/tex]

[tex]9x = 135[/tex]

Divided sides 9

[tex] \frac{9}{9}x = \frac{135}{9} \\ [/tex]

[tex]x = 15[/tex]

So x = 15°

_________________________________

angle 1 = 5x + 35°

angle 1 = 5 ( 15 ) + 35°

angle 1 = 75° + 35°

angle 1 = 110°

_________________________________

angle 1 + angle 2 = 180°

110° + angle 2 = 180°

Subtract sides 110°

angle 2 = 180° - 110°

angle 2 = 70°

_________________________________

And we're done...♥️♥️♥️♥️♥️

Answer:

25

Step-by-step explanation:

It's what the others said, i'll change it if it's wrong

Based on the description of cost and the equation used, m in the equation would represent $25

m in the equation, y = mx + b, is the gradient. It is the figure that shows how much the cost will change in relation to time or activity.

In other words, m is the variable cost.

The only variable cost above is $25 which is variable because it increases per hour worked. m is there $25.

In conclusion, m is $25.

Find out more on the equation y = mx + b at https://brainly.com/question/9983274.

Answer:

x=1/3

Step-by-step explanation:

(18x+3)^2=81

square root both sides

18x+3=9

subtract 3 from both sides

18x=6

divide 18 on both sides

x=1/3

Answer: I think it would be y-1=2 (x+2)

Step-by-step explanation:

Answer:

(a) The total combined paint is 10.3L

(b) 8.8L paint was left after painting

Step-by-step explanation:

From the question, John combines 7L of white paint with 3300 milliliters of blue paint.

First, convert to the same unit, say liters, L.

Now, we will convert 3300 milliliters to liters (L)

{NOTE: 1000 milliliters (mL) = 1 liter (L)}

Since 1000 milliliters = 1 liter

∴ 3300 milliliters = 3300/1000 liters = 3.3 liters

Hence, 3300 milliliters = 3.3 L

Therefore, he combines 7L of white paint with 3.3L of blue paint.

(a) The total combined paint is 7L + 3.3L = 10.3L

∴ The total combined paint is 10.3L

(b) To determine how much paint was left after painting,

From the question, he uses 1 ½ L of paint to paint a hallway, that is, he uses 1.5 L of paint to paint a hallway;

The paint left will be 10.3L - 1.5L

10.3L - 1.5L = 8.8L

Hence, 8.8L paint was left after painting

Answer:

1/2 is the slope of a line with equation y.

Answer:

Positive slope   3/4

Step-by-step explanation:

Answer:

4/3.

Step-by-step explanation:

Unit rate is the same as slope. In order to find the slope, we are going to use this formula:

m = y2 - y1 / x2 - x1

Now, we substitute the numbers into the equation:

m = 8 - 0 / 6 - 0

m = 8/6

m = 4/3

Therefore, the unit rate is 4/3.

Answer:

6.7 inches

Step-by-step explanation:

the statue is 67 feet tall, and in the replica, every inch is 10 feet. All you would need to do is move the decimal point to the left by one point.

Answer:

3x+12

Step-by-step explanation:

When we multipy 3 with (x+4) it becomes 3x+12

Answer:

3x+12

Step-by-step explanation:

3(x+4)

3*x=3.....keep the x with 3 because x just represents 1

3*4=12

so your answer should be

3x+12

hope this helps :)

Answer:

Step-by-step explanation:

you can use desmos for a quick answer or

use y=mx+b where b is the y-intercept and m is the slope

the y-intercept is where the line intercepts the y axis

the slope is the rate of change of the line

for slope we use rise/run, the numerator being up and denominator being to the right.

the slope is 3, which can be written as 3/1

from the point (0,-4) which is out y-intercept, we go up 3 and to the right 1

Answer:

He could say that he is -15 feet as seen from the sea level

The given statement can be represented in an integer as -15.

Given that, Joe lives in a city that is 15 feet below sea level.

We need to find how could he represent his elevation as an integer

Whole numbers less than zero are called negative integers (-). These numbers are to the left of zero on the number line. Zero is neutral. It is neither positive nor negative.

Now, 15 feet below sea level can be represented as -15.

Therefore, the given statement can be represented in an integer as -15.

To learn more about an integers visit:

https://brainly.com/question/9072350.

#SPJ2

Answer:

x=7

Step-by-step explanation:

x-8=-1, x-8+8=-1+8,-1+8=7

Answer:

x<7

Step-by-step explanation: