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3 years ago

What number is 25 percent of 84?

Mathematics

2 answers:

andreev551 [17]3 years ago

6 0

25 percent of 84 equals 21

raketka [301]3 years ago

3 0

Answer: 21

Step-by-step explanation:25%=1/4

1/4*84 =84/4

84/4=21

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kupik [55]

Answer:

$360\ cm^2$

Step-by-step explanation:

Step 1: Determine the area of the bottom rectangle

$A = l * w$

$A = 10\ cm * 12\ cm$

$A = 120\ cm^2$

Step 2: Determine the area of the back rectangle

$A = l * w$

$A = 10\ cm * 5\ cm$

$A = 50\ cm^2$

Step 3: Determine the area of the top rectangle

$A = l * w$

$A = 10\ cm * 13\ cm$

$A = 130\ cm^2$

Step 4: Determine the area of the triangle

$A = \frac{h*b}{2}$

$A = \frac{5\ cm * 12\ cm}{2}$

$A = \frac{60\ cm^2}{2}$

$A = 30\ cm^2$

Step 5: Determine the surface area

$120\ cm^2 + 50\ cm^2 + 130\ cm^2 + 2(30\ cm^2)$

$360\ cm^2$

Answer: $360\ cm^2$

4 0

2 years ago

staircase of steps in a swimming pool has a vertical rise of 14 inches per step and a landing of 20 inches.

Jlenok [28]

I think the question for this problem is to find the slope of the staircase. The slope is a ratio of change of the y-coordinates and x-coordinates of points. It is written as Δy/Δx especially in analytical geometry. It could also be simply the ratio of the rise or vertical height to the run or horizontal length.

Therefore, the slope of the stair case is

Slope = rise/run = 14/20 = 0.7

3 0

3 years ago

Help pleaseeeeeeee :’)

kompoz [17]

Answer:

the time taken is 22 mins

3 0

3 years ago

Solve 2(x-1) =4 xxxxxx

sineoko [7]

2(x-1)=4
2x-2=4
2x=6
x=3

4 0

3 years ago

A 13-inch piece of ribbon is 33.02 centimeters long. How long will a 24-inch piece be?

m_a_m_a [10]

Answer:

60.96

Step-by-step explanation:

1 inch = 2.54

so to know what 24 inch = you can multiply 24 time 2.54 and you should get the answer

2.54 time 24= 60.96

5 0

3 years ago