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Sever21 [200]
3 years ago
13

The value of the 8 in 2781 is how many times the value of the 8 in 948

Mathematics
1 answer:
inessss [21]3 years ago
7 0
8 in 2781 is in tens place.
so value of 8 = 8×10 = 80

8 in 948 is in unit place.
so value of 8 = 8×1 = 8

80 is ten times 8.

So the value of the 8 in 2781 is 10 times the value of the 8 in 948

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What is the value of x in the equation 4(2x + 10) = 0? (1 point)
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Answer:

x = -5

Explanation:

4(2x + 10) = 0

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4(2x + 10) = 0

(4)(2x) + (4)(10) = 0 [Distribute]

8x + 40 = 0

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8x + 40 − 40 = 0 − 40

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2 years ago
Sam deposits $1,000 into an account that pays 6% simple interest annually. He plans to take the money out after 3.5 years. What
lara31 [8.8K]
Well, the formula for simple interest is 

I=prt

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George has only Quarters and nickels in his piggy bank.He has a total of 90 coins.The value of the coins is $16.10. Write and so
son4ous [18]

Answer:

The number of

Quarters = q = 58 quarters

Nickels = n = 32 nickels

Step-by-step explanation:

It is important to note that:

A quarter is worth 25 cents = 0.25q

A nickel is worth 5 cents = 0.05n

George has only Quarters and nickels in his piggy bank.

Let the number of

Quarters = q

Nickels = n

He has a total of 90 coins.

Hence,

q + n = 90.... Equation 1

q = 90 - n

The value of the coins is $16.10.

Hence,

0.25q + 0.05n = 16.10....Equation 2

We substitute 90 - n for q in Equation 2

0.25(90 - n) + 0.05n = 16.10

22.5 - 0.25n + 0.05n = 16.10

Collect like terms

- 0.25n + 0.05n = 16.10 - 22.5

-0.2n = - 6.4

n = -6.4/-0.2

n = 32 nickels

Solving for q

q = 90 - n

q = 90 - 32

q = 58 quarters

Therefore, the number of

Quarters = q = 58 quarters

Nickels = n = 32 nickels

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Answer:

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