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timofeeve [1]
3 years ago
10

What is 7a+21=56 and what is the solution

Mathematics
2 answers:
asambeis [7]3 years ago
7 0
7a+21=56

Begin by subtracting 21 on both sides:
21-21=0 so the 21 in the left cancels, then 56-21=35

Your new equation will be
7a=35

Finally, divide by 7 on both sides:
7/7=1 and 35/7=5

your answer will be
a=5
adoni [48]3 years ago
3 0
7a+21=56

Subtract 21 from 56

7a=35

Divide 35 by 7

Answer a=5
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Answer:

Let's start with part B. if it was originally 10 cm tall and it goes up 0.5 cm. each day, then we know that to go up one cm it needs two days. With that information we can say that 8*2 = 16. So it needs 17 days to go up 8.5 cm which would make it 18.5 cm tall.

Step-by-step explanation:

f(x) = 0.5x + 10

0.5x + 10 = 18.5

0.5x = 18.5 - 10

0.5x = 8.5

x = 8.5/0.5

x = 17 days

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3 years ago
Ryan is a wrestler trying to make weight. He currently weighs 200 lbs. If he cuts 2 lbs. per week, how many weeks will it take h
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The inequality for this problem is

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The conclusion is that Ryan will have less than 175 lbs after 13-th week.

Good luck!!!

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3 years ago
Which explains how you round 212.809 to the nearest hundredth?
Vsevolod [243]

Answer:

c

Step-by-step explanation:

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3 years ago
Lewis fills his thermos with 2 liter of water. Garret fill his thermos with 1 of water. How many more milliliter of water does l
cluponka [151]

For this case we have to:

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3 years ago
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rodikova [14]

Answer:  1.2

Step-by-step explanation:

Let X denotes the grades on a  language midterm at Oak Academy.

As per given ,

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Hence, the z-score for Ishaan's exam grade = 1.2

3 0
3 years ago
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