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Studentka2010 [4]
2 years ago
9

Help!Help!Help!Help!Help!Help!Help!Help!Help!

Mathematics
2 answers:
vova2212 [387]2 years ago
8 0

Answer:

30

Step-by-step explanation:

fgiga [73]2 years ago
7 0

Answer:

30

Step-by-step explanation:

60% of 30 students is 18 girls

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25% of 56. <br> We are practicing finding the percent of each number
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25% is 1/4. Do 56 divided by 4, you get 14
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Translate to an algebraic expression:<br><br> 12 less than the square of a number
Aleksandr [31]

Answer:

12-x²

Step-by-step explanation:

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7 0
2 years ago
B) Select all expressions that can be used to find 85% of 280.
abruzzese [7]

Answer:

238

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Step-by-step explanation:

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4 0
2 years ago
Plot the points in the coordinate plane. Then find the perimeter and area of the polygon.
anyanavicka [17]

Answer:

The answer to your question is below

Step-by-step explanation:

See the graph below

Process

1.- Find the distance from A to B, B to C, C to D, A to D

Formula

d = \sqrt{(x2 - x1)^{2} + (y2 - y1)^{2}}

d AB = \sqrt{(1 + 3)^{2} + (6 - 5)^{2}}  = \sqrt{17}

dBC = \sqrt{(-2 -6)^{2} + (3 - 1)^{2}}  = \sqrt{68}

dCD = \sqrt{(-1 - 3)^{2} + (-3 +2)^{2}}  = \sqrt{17}

dAD = \sqrt{(-1 + 3)^{2} + (-3 - 5)^{2}}  = \sqrt{68}

2.- Find the perimeter

Perimeter = 2\sqrt{17} + 2\sqrt{68} = 6\sqrt{17} u

3.- Find the area

Area = \sqrt{17} x \sqrt{68}

Area = \sqrt{17x68} = \sqrt{1156} = 34 u^{2}

7 0
3 years ago
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