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1 year ago

How do you solve 7/8+(4/8-2/4)

Mathematics

1 answer:

SCORPION-xisa [38]1 year ago

4 0

The answer is 7/8 find a common denominator or cross multiply

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What value of a makes this equation true?

Goshia [24]

9/10=a/30. and value of a is 27

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3 years ago

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Flying against the wind, a jet travels 2160 miles in 3 hours. Flying with the wind, same jet travels 6000 miles in 6 hours. What

marissa [1.9K]

Answer:

The velocity of jet in still air is $860miles/hour$ and velocity of wind is $140miles/hour$ .

Step-by-step explanation:

Let x be the rate of the jet in still air and y be the rate of the wind.

Given:

Velocity against wind, a jet travels 2160 miles in 3 hours.

Velocity against wind $=\frac{2160}{3} = 720 miles/hour$

Flying with the wind, same jet travels 6000 miles in 6 hours.

Flying with the wind $=\frac{6000}{6} = 1000 miles/hour$

As such its velocity against wind is $x-y$

and with wind is $x+y$ therefore

$x-y=720$ ------------(1)

$x+y=1000$ ---------------(2)

Adding equation 1 and 2.

$2x=1720$

$x=\frac{1720}{2}$

$x=860$

Put x value in equation 2

$860+y=1000$

$y=1000-860$

$y=140$

Hence velocity of jet in still air is $860miles/hour$ and velocity of wind is $140miles/hour$ .

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3 years ago

Solve for x: x2 = 16

Paha777 [63]

Answer:

Step-by-step explanation:

to get x alone you divide the 2 away on both sides, getting x = 8. To check multiply 8 by 2 and you get 16.

Hope this helps!

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Find the circumference and area of the circle. Use 3.14 for π. Round to the nearest hundredth if necessary.

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

I rounded off to 1 decimal place

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