3 years ago

What fraction of 45 is 20

Mathematics

1 answer:

iogann1982 [59]3 years ago

8 0

Answer:

2.25×20=45

..............

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A figure is shown with the given dimensions.

Illusion [34]

Answer:

$\blue{A = 24~ft^2}$

Step-by-step explanation:

This figure is a trapezoid with bases of 10 ft and 6 ft and height of 3 ft.

$A = \dfrac{b_1 + b_2}{2}h$

$A = \dfrac{10~ft + 6~ft}{2} \times 3~ft$

$\blue{A = 24~ft^2}$

4 0

3 years ago

Simplify the polynomial: 2[4x-5(2x-1)]

Vaselesa [24]

2[4x-5(2x-1)]
=2[4x- 10x + 5]
= 2(-6x + 5)
= -12x + 10

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3 years ago

Which expression is equivalent to -6(-2+2x)? O −4-12% O −4+2% O 4-12% O 4+12%

Tanya [424]

-6(-2+2x)

Use distributive law

a(b+c)=ab+ac

-6(-2)-6(2x)
12-12x
12(1-x)

7 0

2 years ago

Five of the 25 girls on Alden Middle School’s soccer team are seventh-grade students. Find the percentage of seventh graders on

Gnesinka [82]

Answer:

percentage of seventh graders on the team is 20%

Step-by-step explanation:

given data

total girl = 25

soccer team = 5

to find out

percentage of seventh graders on the team with two different way

solution

we first make here a tape diagram

there in begin by divide the tape diagram into 5 equal part

and Each part represent 5 girls

so divide the 100% into 5 equal sections as show in figure below

and

another way is

percentage of seventh graders on the team is = $\frac{5}{25}$ × 100%

percentage of seventh graders on the team is 20%

5 0

3 years ago

When 8 is subtracted from the square of a number, the result is 7 times the number.

LuckyWell [14K]

Answer:

Step-by-step explanation:

x^2 - 8 = 7x

x^2 - 7x - 8=0

(x - 8)(x + 1)=0

x - 8= 0 x + 1=0

x=8 x= -1

8 is the positive solution

4 0

3 years ago