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3 years ago

Apyramid was built about 2570 BC. Its original height was 453 feet, 11 inches, but

Mathematics

2 answers:

Brums [2.3K]3 years ago

8 0

Answer:

422.44

Step-by-step explanation:

sweet [91]3 years ago

6 0

Answer:

422.44 feet

Step-by-step explanation:

Let A, B, X, and H represent the left-most observation point, the observation point to its right, the point immediately below the apex, and the height of the apex, respectively.

Then the definition of the cotangent function tells us ...

AX = H·cot(42°)

BX = H·cot(48.85°)

Since the figure tells us AB = 100 feet, we have ...

AB = AX -BX

100 = H·cot(42°) -H·cot(48.85°)

H = 100/(cot(42°) - cot(48.85°)) ≈ 422.44 . . . . ft

The current height of the pyramid is 422.44 feet.

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Solve the following equation for x. m (2-x)=3-y

Evgesh-ka [11]

Answer: m=−y+3−x+2

x=2m+y−3m

Step-by-step explanation:

m(2−x)=3−y

Step 1: Factor out variable m.

m(−x+2)=−y+3

Step 2: Divide both sides by -x+2.

m(−x+2)−x+2=−y+3−x+2

m=−y+3−x+2

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m(2−x)=3−y

Step 1: Add -2m to both sides.

−mx+2m+−2m=−y+3+−2m

−mx=−2m−y+3

Step 2: Divide both sides by -m.

−mx−m=−2m−y+3−m

x=2m+y−3m

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3 years ago

Last year a streaming subscription cost $25. This is year that price has increased by 20%. How much will a streaming subscriptio

il63 [147K]

Answer:

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total streaming cost $30

6 0

3 years ago

Please don't answer, I understand it now.

velikii [3]

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4 0

3 years ago

Which ordered pairs make the equation true?

Angelina_Jolie [31]

Answer:

(-3, 1) and (2, -1)

Step-by-step explanation:

We'll just substitute in these coordinates.

First Pair:

2(-3) + 5(1) = -1

-6 + 5 = -1

-1 = -1

This works!

Second Pair:

2(5) + 5(-3) = -1

10 - 15 = -1

-5 ≠ -1

This does not work.

Third Pair:

2(2) + 5(-1) = -1

4 - 5 = -1

-1 = -1

This also works!

Fourth Pair:

2(-4) + 5(2) = -1

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2 ≠ -1

This does not work.

6 0

4 years ago

Please help me :) i would appreciate it a lot

Kobotan [32]

Answer:

Step-by-step explanation:

1.5 -(-2.5)

Change -(- into addition

1.5 + 2.5 = 4

3 0

3 years ago