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expeople1 [14]
2 years ago
8

How tall would the building be

Mathematics
1 answer:
OverLord2011 [107]2 years ago
3 0

Answer:

18

Step-by-step explanation:

1. Create the ratio 12:9

The first number in the ratio is where the length of the shadow will go. The second number is where the length of the building will go.

2. Subtract 21 by 12 to find out how much we have to add to 9. (21-12=9)

3. Add 9 to 9. (18)

We now have 21:18.

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densk [106]

Answer:

h = 6

Step-by-step explanation:

Given he area of the banner expressed as;

A =  ℎ(2ℎ−2)

h is the height of the banner

A is the area = 60

Substitute

60 =  ℎ(2ℎ−2)

60 = 2h² - 2h

30 = h² - h

h²-h-30 = 0

Factorize;

h²-6h+5h-30 = 0

h(h-6)+5(h-6) = 0

(h-6)(h+5) = 0

h - 6 = 0 and h+5 = 0

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Since the height cannot be negative;

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Hence he height of the banner is 6

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3 years ago
I need help with this question
snow_tiger [21]

To solve this, subtract 6 from both sides of the greater than sign to get..

x is greater than -4

3 0
3 years ago
What is the area, in square centimeters, of a right triangle with side
Yanka [14]

Answer:

210 cm^2

Step-by-step explanation:

Let, a=37 cm, b=35 cm, c= 12 cm

s=(a+b+c)/2 = 42 cm

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Δ= \sqrt{42(5)(7)(30)}

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2 years ago
Sandy is working with a carpenter to frame a house. They are using 8-foot-long boards, but each board must be cut to be 7 feet 1
Hitman42 [59]

Answer:

1  1/4 in of material is cut off each board.

Step-by-step explanation:

To answer this, subtract 7 ft 10  3/4 inches from 8 ft.

First, rewrite 8 ft as 7 ft 12 inches.

Then subtract:

 7 ft 12 in

- 7 ft  10  3/4 in

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1  1/4 in of material is cut off each board.

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3 years ago
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laiz [17]

Answer:

x= 38/5

Step-by-step explanation:

4 0
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