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enot [183]
3 years ago
13

Marco can build a computer twice as fast as Cliff. Working together, it takes them 5 hours. How long would it have taken Marco w

orking alone?
Mathematics
1 answer:
seraphim [82]3 years ago
3 0

Answer:

7.5 hours

Step-by-step explanation:

Let Marco's speed be M

Cliff's speed be C

M = 2C

Combined speed:

M + C

2C + C = 3C

3C = W/time

3C = W/5

W = 15C

2C = 15C/time

Time = 15/2 = 7.5 hours

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Rufina [12.5K]

Answer:

  0.69

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you that the sine is the ratio ...

  Sin = Opposite/Hypotenuse

For angle P, the opposite side is OQ. The hypotenuse is the longest side, PO. So, the sine is ...

  sin(P) = OQ/PO = 20/29

  sin(P) ≈ 0.69

3 0
3 years ago
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Which salt produces the least salt hydrolysis in an aqueous solution?
Elodia [21]

Answer:

Potassium Iodide

Step-by-step explanation:

KI (potassium iodide) is a salt of stable (not radioactive) iodine that can help block radioactive iodine from being absorbed by the thyroid gland, thus protecting this gland from radiation injury. The thyroid gland is the part of the body that is most sensitive to radioactive iodine.

I hope this helps. If you have any more questions, please feel free to post them and someone will be able to help you, whether it's myself or others. Please leave a like, rating, and if possible, Brainliest. Have a great day!

6 0
3 years ago
What is the surface area of the cylinder? Express the answer in terms of Pi?
jeyben [28]

Answer:

A≈552.92cm²

Step-by-step explanation:

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8 0
3 years ago
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A class of 32 students earned
Yuliya22 [10]

Answer:

5/16 Got a C

Step-by-step explanation:

A = 1/4 x 32

B = (32 - A)/2

D = 2

A = 8

B = (32 - 8)/2

B = 24/2

B = 12

D = 2

8 + 12 + 2 = 22

22/32 did not get a C

32/32 - 22/32 = 10/32

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3 0
3 years ago
Find the area of a circle with a radius 4 mm. Use the value 3.14 for π, and do not round your answer. Be sure to include the cor
just olya [345]

<u>Answer:</u>

A=50.24 mm²

<u>Step-by-step explanation:</u>

A=3.14×4²

A=3.14×16

A=50.24 mm²

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3 years ago
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