3 years ago

Expand the expression and combine like terms: 2(−14+r)−(−3r−5)

Mathematics

1 answer:

Serggg [28]3 years ago

4 0

2r-20 is the answer combining the like terms and solving.

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Help me with this math problem please

mrs_skeptik [129]

Answer:

$y=8$

$RS=77, ST=31$

Step-by-step explanation:

Note that the entire segment RT is the combined lengths of RS and ST. So:

$RT=RS+ST$

We know that RT is 108, RS is (9y+5), and ST is (3y+7). Substitute:

$108=(9y+5)+(3y+7)$

On the right, combine like terms:

$108=(9y+3y)+(5+7)$

Add:

$108=12y+12$

Subtract 12 from both sides. The right cancels:

$96=12y$

Divide both sides by 12:

$y=8$

So, the value of y is 8.

To find RS and ST, substitute 8 for y. So:

$RS=9y+5$

Substitute 8 for y:

$RS=9(8)+5$

Multiply:

$RS=72+5$

Add:

$RS=77$

Do the same for ST:

$ST=3y+7$

Substitute 8 for y:

$ST=3(8)+7$

Multiply:

$ST=24+7$

Add:

$ST=31$

5 0

3 years ago

Read 2 more answers

The weekly pay that Melissa receives varies directly with the number of hours she works. If she works 34 hours she makes 274.04.

ohaa [14]

Answer:

Step-by-step explanation:

274.04/34=8.06(21)=169.26

6 0

3 years ago

Help please!!! Thxxxxx

nydimaria [60]

Answer:

Step-by-step explanation:

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3 years ago

To be eligible for a basketball tournament, a basketball team must win at least 60% of its remaining games. If the team has 21 g

Slav-nsk [51]

IT IS 13 BECAUSE 60 PERCENT OF 20 IS 13

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3 years ago

2 ways to write y divided by three in algebra expression

JulijaS [17]

Answer:

y/3. 1/3y

Step-by-step explanation:

1/3y is y/3 because 1*y=y

7 0

3 years ago