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2 years ago

Can someone help me with this one

Mathematics

1 answer:

Nostrana [21]2 years ago

6 0

It’s name would be a monomial because it only has 1 term. (Terms are departed by addition or subtraction sign) The degree would be the highest exponent in the polynomial, in this case we only have 1 term so the degree of that term is 2

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1) An i staircase has a 10 inch vertical rise per step to get to the second floor of the house. If the angle of elevation is 30.

bezimeni [28]

Answer:

Each landing is about 17 inches.

The vertical rise from Floor 1 to Floor 2 is about 7 feet.

Step-by-step explanation:

Please refer to the attachment below. (I accidentally wrote 30.30 instead of 30.20. Please ignore that and sorry for any confusion.)

Part A)

So, we want to find the length of $\ell$ .

Note that the angle of elevation, the vertical height, and $\ell$ form a right triangle.

Since the vertical height opposite to our angle is 10, and we want to find the adjacent height, we can use the tangent ratio:

$\displaystyle \tan(x^\circ)=\frac{\text{Opposite}}{\text{Adjacent}}$

Therefore:

$\displaystyle \tan(30.20)=\frac{10}{\ell}$

Solve for $\ell$ . Cross-multiply:

$\displaystyle \ell\tan(30.20)=10$

So:

$\displaystyle \ell=\frac{10}{\tan(30.20)}=17.1817...\approx17\text{ inches}$

The landing space per step is about 17 inches.

Part B)

We know that there are a total of 12 feet of horizontal space total for each landing.

12 feet is equivalent to (12)(12) = 144 inches.

Since each landing is 17.1817... inches, this means that we have 144/(17.1817...) = 8.38... or about 8 steps.

Since the vertical rise of each step is 10 inches, the vertical rise from the 1st Floor to the second will be 8(10) or 80 inches or 80/12 = 6.666... or about 7 feet.

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2 years ago

Select all points that lie on line y = 8x - 5

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Answer:

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2 years ago

What is the x value of 10=-x-8-6

gulaghasi [49]

10=-x-8-6
10=-x-14
Add x to each side
10+x=-x-14+x
10+x=-14
Subtract 10 to each side
10+x-10=-14-10
x=-24
Check:
10=-x-8-6
Substitute x with -24
10=-(-24)-8-6
10=24-8-6
10=16-6
10=10. As a result, x=-24. Hope it help!

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2 years ago

Find the greatest possible error for the measurement 4.7 cm. 0.05 cm 0.5 cm 1.0 cm

NeTakaya

Answer:

0.05 cm

Step-by-step explanation:

The least-significant digit in the given measurement is the one in the 0.1 cm number place. The "greatest possible error" is half the value of that number place, so is ...

(0.1 cm)/2 = 0.05 cm . . . . "greatest possible error"

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