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algol13
3 years ago
14

Mandy scored 88, 94, 82, and 89 on her math tests. What is the least score she can earn on her next math test to have a mean of

90 or more
Mathematics
1 answer:
Anika [276]3 years ago
5 0
She would have to score at least a 97% on her next math test.

Mean = 88 + 94 + 82 + 89 + 97 = 450
450/5 = 90

You could have found this answer without using trial and error.
If she wants to get a mean of 90 and she will have 5 tests, you can multiply these together.
This equals 450.
Now you need to find the minimum score she needs to get. Take 450 and subtract what the original 4 numbers equal, 353.
This gives you 97.
I hope that makes sense :)
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Which proportion can you use to find the value of a?
Ugo [173]

<u>Given</u>:

The given triangle is a similar triangle.

The length of the hypotenuse is 18 units.

The length of the leg is a.

The length of the part of the hypotenuse is 16 units.

We need to determine the proportion used to find the value of a.

<u>Proportion to find the value of a:</u>

We shall find the proportion to determine the value of a using the geometric mean leg rule.

Applying the leg rule, we have;

$\frac{\text { hypotenuse }}{\text { leg }}=\frac{\text { leg }}{\text { part }}$

Substituting the values of hypotenuse, leg and part, we get;

\frac{18}{a}=\frac{a}{16}

Thus, the proportion used to find the value of a is \frac{18}{a}=\frac{a}{16}

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3 years ago
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Vitek1552 [10]

Answer:

1. $33.00

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3 years ago
Triangle FGH is translated using the rule (x,y) &gt; (x+3,y-1). What are the coordinates of H ?
Masteriza [31]

Answer: H'(4,-3)

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In this case you know that the Pre-Image is the Triangle FGH.

You can identify in the picture that its vertex H has these coordinates:

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