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2 years ago

What is 90900909909090909099009099090 +242424242424-6566556637

Mathematics

1 answer:

fenix001 [56]2 years ago

8 0

Answer:

90900909909090909334866784877

or 9.0900909909090909334866784877 × 10²⁸

Step-by-step explanation:

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How tall is a building that casts a 78-ft shadow when the angle of elevation of the sun is 30 degrees?

Marta_Voda [28]

Answer: $45.03\ ft$

Step-by-step explanation:

Given

The length of the shadow is 78 ft

the angle of elevation is $\theta =30^{\circ}$

Suppose the height of the building is $h$

From the figure, we can write

$\tan 30^{\circ}=\dfrac{h}{78}\\\\h=78\tan 30^{\circ}\\\\h=45.03\ ft$

The height of the building is 45.03 ft

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2 years ago

Your car cost $42,500 when you purchased it in 2015. The value of the car decreases by 15% annually. How much is your car going

Vika [28.1K]

Answer:
$16,028.85

Working out:
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3 years ago

Greenfield village is spread across 240 acres of land. Only 37% of the land is used for the exhibits, while the rest of the land

Sergeeva-Olga [200]

Answer:

The land which are used for exhibits are 89 acres (approximately).

Step-by-step explanation:

Given:

Village is spread across 240 acres of land. 37% of land is used for the exhibits.

Now, we have to find acres of land which are used for exhibits.

So, here it is given that land used for exhibits is 37%, and we have to calculate the quantity from the percentage given:

According to question:

37% of 240 acres of land.

$\frac{37}{100}\times 240$

$0.37\times 240$

$88.80$

So, the land used for exhibits are 88.80 acres.

Therefore, the land which are used for exhibits are 89 acres (approximately).

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3 years ago

A spherical balloon has a circumference of 23 cm. What is the approximate surface area of the balloon to the nearest square cent

Bad White [126]

168cm2
Let r cm be the radius of the balloon, then
2pi(r)=23=>r=23/(2pi) 
The surface area= 
4pi(r^2)= 
4pi[23/2pi)]^2= 
(23^2)/pi=168.386 cm^2 
approximately.

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3 years ago

Match the following differential equations with their solutions. The symbols A, B, C in the solutions stand for arbitrary consta

aleksley [76]

Answer:1

Step-by-step explanation:

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3 years ago