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igor_vitrenko [27]
3 years ago
14

1/2 greater than or less than 3/15

Mathematics
1 answer:
Colt1911 [192]3 years ago
5 0
Greater
If we get common denominators
1/2=15/30
3/15=6/30
15>6 therefore 1/2>3/15
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Tammy has scored 82, 78, and 93 on her previous three tests. What score does she need on her next test so that her average (mean
Lyrx [107]

Answer:

She needs a grade of 71 on her next text.

Step-by-step explanation:

Mean of a data-set:

The mean of a data-set is the sum of all values in the data-set divided by the number of values.

Tammy has scored 82, 78, and 93 on her previous three tests.

Thus, her grades are 82, 78, 93 and x, in which x is her grade in the fourth test.

There are 4 tests.

What score does she need on her next test so that her average (mean) is 81?

We have to find x when the mean is 81. So

\frac{82 + 78 + 93 + x}{4} = 81

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x = 324 - 253

x = 71

She needs a grade of 71 on her next text.

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3 years ago
Consider the expression √(√625).
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Answer:

5

Step-by-step explanation:

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With this meaning, we need to find a number that multiplies itself into 625.

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25^2 is equal to 625. Therefore \sqrt{25}

We are not finished, as there is another square root right after, empowering the parenthesis, so what number multiplies itself equals 25?

This would be 5, therefore \sqrt{(\sqrt{625}) } is equal to 5.

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3 years ago
A cross country racer records a time of exactly 4 minutes to complete a race that is a distance of 1,000 meters. What is the rac
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Step-by-step explanation:

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5. Two vertices of a rectangle are (8,-5) and (8,7). If the area of the rectangle is 72 square units, name the possible location
Phantasy [73]

Answer:

<h3>#5</h3>

<u>Given vertices:</u>

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These have same x-coordinate, so when connected form a vertical segment.

<u>The length of the segment is:</u>

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The area of the rectangle is 72 square units, so the horizontal segment has the length of:

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<u>Possible location of the remaining vertices (to the left from the given):</u>

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and

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<h3>#6</h3>

<u>Similarly to previous exercise:</u>

  • (5, -8) and (5, 4) given with the area of 48 square units

<u>The distance between the given vertices:</u>

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<u>The other side length is:</u>

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<u>Possible location of the other vertices (to the right from the given):</u>

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and

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4 0
3 years ago
Midpoint: (3,5) and (-1, 7)
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To find the midpoint:
x=3-1/2= 1
y=5+7/2= 6
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3 years ago
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