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3 years ago

6

4) A safe contains 120 coins, the value of which is $10. If the coins consist of nickels and dimes, how many of each kind are in

it?

1 answer:

alexandr1967 [171]3 years ago

8 0

There are 40 nickels and 80 dimes

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H2 + 7h + 10 = 0<br> Help please

Leni [432]

Answer:

-2, -5

Step-by-step explanation:

h2 + 7h + 10 = 0

h^2 +7h + 10 = 0

h^2 +2h +5h + 10 = 0

h(h+2) + 5(h+2) = 0

h+2 = 0 or h+5 = 0

h = -2 or h = -5

4 0

3 years ago

Find the perimeter of a regular pentagon with sides of (3x + 5).

kotegsom [21]

Answer:

5(3x + 5) or 15x + 25

Step-by-step explanation:

A regular pentagon has 5 sides of equal length. The perimeter is the sum of the lengths of those sides. We can use multiplication to find the sum of 5 of the same value:

P = 5(3x +5)

Perhaps you want it expanded. Using the distributive property, we multiply each term in parentheses by 5:

P = 15x + 25

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4 years ago

Which expression shows twice the sum of 8 and a number n?

IRISSAK [1]

Correct Answer: A. 2(n+8).

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3 years ago

Solve this problem 6.3=0.9y

Anni [7]

6.3 = 0.9y

y would equal 7

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3 years ago

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34kurt

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Step-by-step explanation:

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3 years ago