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Snowcat [4.5K]
3 years ago
7

Stephen earned scores of 88 points, 94 points, 89 points, and 85 points on four tests. What is the lowest score he can get on th

e fifth test and still finish with an average score of 90 points?
Mathematics
2 answers:
yawa3891 [41]3 years ago
8 0

Answer:

The lowest score Stephen can get on the fifth test = 94 points    

Step-by-step explanation:

The marks scored by Stephen in test one = 88 points

The marks scored by Stephen in second test = 94 points

The marks scored by Stephen in test third = 89 points

The marks scored by Stephen in test fourth = 85 points

Let The marks scored by Stephen in test fifth be x points

Now, The average score in all the tests = 90 points

Sum of all the five tests = 88 + 94 + 89 + 85 + x

⇒ Sum of all five tests = 356 + x

Now, Average × 5 = Sum of five tests

⇒ 90 × 5 = 356 + x

⇒ 450 - 356 = x

⇒ x = 94

Therefore, The lowest score Stephen can get on the fifth test = 94 points

Step2247 [10]3 years ago
6 0
94 Points must be scored in order to get an average of 90 for his grade.
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The radius of a size 5 soccer ball is approximately 11.5 cm. How many square inches of synthetic leather does it
kakasveta [241]

Answer:

1661.06 cm²

Step-by-step explanation:

From the question given above, the following data were obtained:

Radius (r) = 11.5 cm

Size of synthetic leather needed =?

To know how many square centimetres of synthetic leather needed to cover the ball, we shall determine the area of the ball. This can be obtained as follow:

Radius (r) = 11.5 cm

Pi (π) = 3.14

Area of ball =?

The shape of a ball is spherical in nature. Thus, we shall apply the formula for calculating the area of a sphere. This is illustrated below:

A = 4πr²

A = 4 × 3.14 × 11.5²

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A = 1661.06 cm²

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6 0
2 years ago
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koban [17]

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<u>Step-by-step explanation:</u>

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3 years ago
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Answer:

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Step-by-step explanation:

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Answer:

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dangina [55]
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