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pochemuha
3 years ago
5

Simplify the expression. 3(a – 7) =

Mathematics
2 answers:
Eva8 [605]3 years ago
4 0
The expression simplifies to 3a-21
Elina [12.6K]3 years ago
3 0

Answer:

3a-21

Step-by-step explanation:

3(a-7)= 3a-21

nothing to see here coz the app wants my answer to be at least 20 characters long

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What is 10 x 5 + 50 I need an lot of help im mest up in the brain.
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100 sir

Step-by-step explanation:

10 times 5 is 50 and plus 50 is 100

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3 years ago
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Nate's weekly pay increased from $710 to $770. Which of the following is closest to the
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If the coefficient of determination for a data set containing 24 points is 0.5,
aleksandrvk [35]

Answer:

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3 years ago
Jesse has $3.40 in quarters and nickels. The number of nickels is 5 more than 2 times the number of quarters. How many quarters
dlinn [17]

Answer:

9 quarters

Step-by-step explanation:

From the question

Jesse has $3.40 in quarters and nickels

Quarters = q = number of quarters

1 quarter = $0.25

nickels = n = number of nickels

1 nickel = $0.05

Hence,

0.25q + 0.05n = $3.40 .......Equation 1

The number of nickels is 5 more than 2 times the number of quarters.

n = 2q + 5

0.25q + 0.05n = $3.40 .......Equation 1

0.25q + 0.05(2q + 5) = 3.40

0.25q + 0.10q + 0.25= 3.40

0.35q = 3.40 - 0.25

0.35q = 3.15

q = 3.15/0.35

q = 9

Therefore, Jessie has 9 quarters.

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3 years ago
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