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3 years ago

Which is a simplified form of the expression -5(y – 2) – 7y?

Mathematics

2 answers:

Triss [41]3 years ago

7 0

It would be: -5(y - 2) - 7y
= -5y + 10 - 7y
= -12y + 10

In short, Your Answer would be Option A

Hope this helps!

seropon [69]3 years ago

4 0

Distribute and combine like terms.

-5(y-2) - 7y
-5y + 10 - 7y
-12y + 10

A (-12y + 10) would be the answer.

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Solve for X 2( 5.5x+1) =24 )

vredina [299]

Answer:

x=2

Step-by-step explanation:

11x+2=24

11x=22

22/11=2

x=2

7 0

3 years ago

Pls Help! Very Easy! 10 points! Brainliest if you are correct!

SSSSS [86.1K]

We can see that the 33 degrees corresponds to angle A (parallel lines) meaning they’re equal.
This means that 33 + 2x = 5x (5x is the exterior angle, so the other two interior angles’ sum must equal to it)
3x = 33
x = 11

3 0

3 years ago

Solve the system of equations by elimination. 2x+8y=10 -4x-9y=-13 x = y =

Reptile [31]

So use cancelation
multiply first equation by 2
2x+8y=10
times 2
4x+16y=20
now add

4x+16y=20
-4x-9y=-13 +
0x+7y=7
7y=7
divide by 7
y=1

subsittue

2x+8y=10
2x+8(1)=10
2x+8=10
subtract 8 from both sides
2x=2
divide by 2
x=1

x=1
y=1

8 0

3 years ago

algerba write the missing numbers that make these number sentences true . 40+50=60 + ____. __= 89+10

san4es73 [151]

Answer:

it is 9 bc it adds up to 99

Step-by-step explanation:

5 0

3 years ago

Choose the option with the proper number of sig figs

marishachu [46]

$\text{ 2 }\times10^8$

Explanation: $\begin{gathered} \text{Given:} \\ \frac{9\text{ }\times10^9}{4.5\text{ }\times10^1} \end{gathered}$

let's break down the expression to get the final result:

$\begin{gathered} \frac{9\text{ }\times10^9}{4.5\text{ }\times10^1}\text{ = }\frac{9}{4.5}\times\text{ }\frac{10^9}{10^1} \\ \frac{9}{4.5}\text{ = }\frac{9\text{ }\times\text{ 10}}{4.5\text{ }\times\text{ 10}}\text{ = }\frac{90}{45} \\ \frac{9}{4.5}\text{ = }2 \\ \\ \frac{10^9}{10^1}\colon\text{ when we divide exponents with same base, } \\ we\text{ take one of the base and combine the exponents by subtracting them:} \\ \frac{10^9}{10^1}=10^{9-1} \\ \frac{10^9}{10^1}=10^8 \end{gathered}$ $\begin{gathered} \frac{9}{4.5}\times\text{ }\frac{10^9}{10^1}\text{ = 2 }\times10^8 \\ \\ \text{when dividing decimals, }the\text{ least number of }significant\text{ }figures\text{ in the problem}, \\ \text{ }\det ermines\text{ the significant figures in the answer} \\ 9\text{ = 1 significant, 4.5 = 2 significant} \\ \text{The least significant is 1} \\ \\ \frac{9\text{ }\times10^9}{4.5\text{ }\times10^1}\text{ = 2 }\times10^8 \end{gathered}$

6 0

1 year ago