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3 years ago

13

Ronald needs a morning breakfast drink that will give him at least 390 calories. Orange juice has 130 calories in 8oz. How many

ounces does he need to drink to reach his calorie goal?

1 answer:

Nitella [24]3 years ago

5 0

Answer:

24 ounces of orange juice

Step-by-step explanation:

Given-

Calories needed=390 calories

Calories in 8oz juice=130 calorie

Therefore ounces of juice=(390/130)8

=3 x 8

=24 ounces

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Alex scored 98,72, and 87 on his first three math test. What must he score on the next test to have an average of at least 86 (P

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Answer:

$\huge\boxed{\text{At least an } 87\%}$

Step-by-step explanation:

In order to find what score Alex must earn to have an average of 86 on all his tests, we need to first note what the formula to find the average of a data set is.

$\displaystyle \frac{x_1+x_2+...x_n}{n}$

What the formula means is that we have to add up all the values then divide by the total number of values.

Let's represent our unknown number as $x$ .

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Let's solve this inequality for x.

$\frac{98+72+87+x}{4} \cdot 4 \geq 86 \cdot 4$
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So, Alex must score at least an 87% on his next quiz to have an average of 86%.

Hope this helped!

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