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yan [13]
2 years ago
11

Ben wants to get a 94 in math class. His grade will be the average of two test scores. He scored an 89 on the first test. What g

rade does Ben need to get on his second test to meet his goal?
Mathematics
2 answers:
In-s [12.5K]2 years ago
8 0

Answer:

Ben needs to get a 99% on his second test

Step-by-step explanation:

The average is the sum of both test scores, divided by the total number of test scores (2).

Let x by the grade Ben must receive on his second test.

(89 + x)/2 = 94

Multiply by 2 on both sides

89 + x = 188

Subtract 89 on both sides

x = 99

Check work:

(89 + 99)/2 = 188/2 = 99

STALIN [3.7K]2 years ago
3 0

Answer: 99

Concept:

Here, we need to know the idea of the average value.

In mathematics, <u>average </u>refers to the sum of a group of values divided by n, where n is the number of values in the group.

Average = Sum of value / number of values

Solve:

<u>Given information</u>

Scoring on first test = 89

Scoring on second test = x

Number of tests = 2

Average = 94

<u>Given expression</u>

Average = Sum of value / number of values

<u>Substitute values into the expression</u>

94 = (89 + x) / 2

<u>Multiply 2 on both sides</u>

94 × 2 = (89 + x) / 2 × 2

188 = 89 + x

<u>Subtract 89 on both sides</u>

188 - 89 = 89 + x - 89

\boxed{x=99}

Hope this helps!! :)

Please let me know if you have any questions

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