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2 years ago

9

Claire has received scores of 85, 88, 87, and 80 on her algebra tests. what is the minimum score she must receive on the fifth

test to have an overall test score average of at least 82 ?

1 answer:

algol [13]2 years ago

5 0

85+88+87+80+x/5=82

340+x=410

410-340=70

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I have k quarters, five less quarters than nickels and one more than twice as many dimes as quarters. Find the value of the coin

Alenkinab [10]

Answer:

(35k + 20) cents

Step-by-step explanation:

First of all, let us have the value of each unit:

1 quarter = 25 cents

1 nickel = 5 cents

1 dime = 10 cents

Given that number of quarter = k

Quarters are 5 lesser than Nickels, so number of nickels = k+5

One more than twice as many dimes as quarters:

k = 2 $\times$ Number of Dimes + 1

So, number of dimes = $\frac{1}{2}(k-1)$

Value of quarters = $25 \times k$ cents

Value of nickels = $5 \times (k+5) = (5k+25)\ cents$

Value of dimes = $\frac{1}{2}(k-1) \times 10 = (5k-5)\ cents$

So, total value of coins =

$25k + 5k +25 +5k-5\\\Rightarrow (35k+20)\ cents$

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liberstina [14]

4/6
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Who can help me with this

Flauer [41]

C - 0.15c is the same as 1c - 0.15c.
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posledela

Answer:

-s = -4

Step-by-step explanation:

-9s - 4 = -8s = -9s + 8s = -4 = -s= -4

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