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3 years ago

10

PWEASE help me (7th grade math work) will mark as a Brainliest and pls show work

1 answer:

pav-90 [236]3 years ago

6 0

Answer:

<h2>15%</h2><h2></h2>

Step-by-step explanation:

this week sold = $2,760

last week sold = $2,400

the difference from this week to last week = 2700-2400 = 360

that means it increased : 360 / 2400 = 0.15 (100%) = 15%

therefore, the increase of sale is 15%

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Y= - x+2 Y=3x-4<br> Estimate the solution to the system of equations

IrinaVladis [17]

Answer:

$x=\frac{3}{2}\\ y=\frac{1}{2}$

Step-by-step explanation:

$y=-x+2\\y=3x-4$

Let's solve one of them for x.

$y=3x-4$

Add 4

$y+4=3x$

Divide by 3.

$x=\frac{y+4}{3}$

Now, plug the value of y in the formula, or you can plug the value of x in the other equation. I'll take this one.

$x=\frac{y+4}{3}$

$x=\frac{(-x+2)+4}{3}$

$x=\frac{-x+2+4}{3}$

$x=\frac{-x+6}{3}$

Multiply by 3 to get rid of the denominator.

$3x=-x+6$

add x

$3x+x=6$

Combine like terms;

$4x=6$

Divide by 4.

$x=\frac{6}{4}$

Simplify.

$x=\frac{3}{2}$

Now that you found the value of x, replace it in any of the equations to find y.

$y=-x+2\\y=-(\frac{3}{2})+2\\ y=-\frac{3}{2}+2$

$y=\frac{-3+2*2}{2} \\y=\frac{-3+4}{2} \\y=\frac{1}{2}$

Proof:

$y=3x-4\\\frac{1}{2}=3(\frac{3}{2})-4\\\frac{1}{2}=(\frac{9}{2})-4$

$\frac{1}{2}=\frac{9-4*2}{2}$

$\frac{1}{2}=\frac{9-8}{2}$

$\frac{1}{2}=\frac{1}{2}$

8 0

4 years ago

The sum of the measures of the two angles of a linear pair must be

Pie

Answer: 180

Angles in a linear pair are always supplementary. This means they form a straight angle or a straight line.

6 0

3 years ago

Hunter read a total of 22 books over 11 months. If Hunter has read 42 books so far, how

Mamont248 [21]

21 months. Hope this helps!

5 0

3 years ago

Round the number 2.72603 to 2 decimal places

svetlana [45]

Answer:

2.73

Step-by-step explanation:

2.72(6)03

use 6= 2.73

3 0

3 years ago

Square root of 129 is greater than, less than or equal to 95/8?

Tanzania [10]

√129 is less than $\frac{95}{8}$ .

$\large\mathfrak{{\pmb{\underline{\purple{Step-by-step\:explanation}}{\purple{:}}}}}$

Let us first solve for √129.

➝ $\:\sqrt{129}$

➝ $\:11.3578$

Now,

➝ $\: \frac{95}{8}$

➝ $\:11.875$

Clearly,

➵ $\:11.3578 < 11.875$

➵ $\: \sqrt{129} < \frac{95}{8}$

Hence, √129 is less than $\frac{95}{8}$ .

$\red{\large\qquad \qquad \underline{ \pmb{{ \mathbb{ \maltese \: \: Mystique35☂}}}}}$

5 0

3 years ago