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Sphinxa [80]
3 years ago
8

Estimate 4020 ÷ 16 by first rounding each number so that it has only 1 nonzero digit.

Mathematics
2 answers:
ale4655 [162]3 years ago
5 0
4020/16 original problem
4000/20  estimated problem
200     answer

Alexxx [7]3 years ago
3 0
You round 4020 to 4000
round 16 to 20
then divide 4000 by 20
once you divide the answer is 200
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It’s worth 10 points if you answer!
Maksim231197 [3]

Answer:

m∠x = 10°

Step-by-step explanation:

Since we are dealing with a <u>right triangle</u> and its two sides and one angle, we can use <u>trigonometry ratios</u>. Remember them all with the acronym SohCahToa.

"o" is for opposite side, "a" is for adjacent side, "h" is for hypotenuse side.

The ratios are:

sinθ = opposite/hypotenuse

cosθ = adjacent/hypotenuse

tanθ = opposite/adjacent

θ means the "angle of reference", or the angle you know or want to find. This determines which side is adjacent (touching) or opposite (not touching). The hypotenuse (longest side) does not change.

In this triangle, θ = x. The sides we know are hypotenuse and opposite. Therefore, we will use the sinθ ratio.

sinθ = opposite/hypotenuse

sinx = CB/AB      Substitute the labels in the diagram

sinx = 4/23      Substitute known values (side lengths)

x = sin⁻¹(4/23)      Isolate 'x'. Use calculator to solve.

x = 10.015....°      Exact answer

x ≈ 10°      Round to the nearest degree

Therefore the measure of angle x (m∠x) is 10°.

8 0
3 years ago
Based on this description, what conclusion did outsiders most likely draw about West African leaders after meeting Mansa Musa?
katrin2010 [14]

Answer:

A

Step-by-step explanation:

8 0
2 years ago
Arianna cycles for 3 hours at a speed of 40 mph. what distance did she travel
Phantasy [73]

40 × 3 = 120 miles

that's it

5 0
2 years ago
Read 2 more answers
Pls answe quick and correctly
andriy [413]

Answer:

9890

Step-by-step explanation

7×43×30+5×4×43=9890

4 0
2 years ago
Please answer please
Murrr4er [49]

<BAC = <DEC = 30°

<BCA = <DCE = 70°

<CDE (or m<D) = 180° - <DEC - <DCE

<CDE = 180° - 30° - 70°

<CDE = 80°

The number that belongs in the green box is 80

3 0
3 years ago
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