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3 years ago

Use factoring to write an equivalent expression 15 x +9

Mathematics

2 answers:

Tamiku [17]3 years ago

6 0

Answer:Add 15 to both sides of the equation. x = − 9 + 15

Add − 9 and 15 . x = 6

Rashid [163]3 years ago

6 0

Answer:

you can do many ways one would be 3(5x times 3) (hope this helps and please give me brainliest)

Step-by-step explanation:

9 and 15 have a common factor of 3

divide 15x by 3 which is 5x

then do 9 divided by 3 which is 3

then put 3 outside parentheses and put 5x to show 15x and 3 to show the 9

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Small notebooks cost $3.50 and large notebooks cost $5.00. She needs to buy 31 notebooks, and she has $134 to spend. How many sm

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Let's assume

number of small notebooks =x

number of large notebooks =y

we are given

total number of notebooks =31

so, we get

$x+y=31$

now, we can solve for y

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we have

Small notebooks cost $3.50 and large notebooks cost $5.00

she has $134 to spend

so, we get

$3.50x+5y=134$

now, we can plug y

$3.50x+5(31-x)=134$

$3.50x+5*31-5x=134$

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number of small notebooks is 14

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