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3 years ago

15

A carpenter is constructing a straircase in a house. The distance from the first floor to the basement is 10.3 feet. The stairca

se will be 17.9 feet long. What angle do the stair make with the basement floor?

1 answer:

Anika [276]3 years ago

5 0

Answer:

35.1°

Step-by-step explanation:

sin θ = 10.3 / 17.9

θ = sin⁻¹(10.3 / 17.9)

θ = 35.1°

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A square has a diagonal length 18 in. What is the side length of the square?

Elenna [48]

Answer:

9 $\sqrt{2}$ inches

or

12.728 inches

Step-by-step explanation:

Use Phytagorean Theorem

$a^{2} +b^{2} =c^{2}$

Since both all sides of a square are equal, this means that $a^{2}$ and $b^{2}$ are equal.

So that leaves us with:

$a^{2} +a^{2} = 18^{2}$

Simplify

$2a^{2} = 324$

Divide both sides by 2

$\frac{2a^{2} }{2} =\frac{324}{2}$

Simplify

$a^{2} = 162$

Find the square root of both sides

$\sqrt{a^{2} } =\sqrt{162}$

a = 9 $\sqrt{2}$

(or if you want the decimal, rounded to the 3rd decimal place: 12.728)

4 0

2 years ago

Yoo can someone find the missing input pls n thank uuu

swat32

Answer:

so x equals 2

Step-by-step explanation:

x =2 because x^3 is the same as 8 and f just means it is a function.

Have a nice day

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3 years ago

Simplify the expression<br><br> - 3/6 - 5/7<br><br> can you show me how?

mote1985 [20]

-3/6 -5/7

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snow_lady [41]

Answer:#2

Step-by-step explanation:

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