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2 years ago

Evaluate the expression. x2−4x for x=−1 no links or files pls.

Mathematics

1 answer:

qaws [65]2 years ago

7 0

Answer:

${x}^{2} - 4x \\ {( - 1)}^{2} - 4( - 1) \\ 1 + 4 = 5$

I hope I helped you^_^

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A gas storage tank is in the shape of a right circular cylinder that has a radius of the base of 2ft and a height of 3ft. The fa

bogdanovich [222]

Answer:

Yes, the farmer have enough paint to complete the job.

Step-by-step explanation:

It is given that a gas storage tank is in the shape of a right circular cylinder.

The radius of the base is 2 ft and the height of cylinder is 3 ft.

The total surface area of a cylinder is

$S=2\pi rh+2\pi r^2$

Total surface area of gas storage tank is

$S=2\pi (2)(3)+2\pi (2)^2$

$S=12\pi+8\pi$

$S=20\pi$

$S=62.8318530718$

$S\approx 62.83$

The total surface area of gas storage tank is 62.83 square feet.

The farmer has 1 gallon of paint and 1 gallon of paint will cover 162 square feet.

Since 62.83<162, therefore 1 gallon of paint is enough to paint the gas storage.

Hence the required statement is Yes, the farmer have enough paint to complete the job.

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3 years ago

Yasmin uses 4 cups of papaya juice for every 6 cups of pineapple juice. If Yasmi already has 24 cups of pineapple juice, how man

lilavasa [31]

Answer:

Step-by-step explanation:

The ratio is 4:6 4 papaya to 6 pineapple

This turns out to be for every 1 cup of papaya juice you have 1.5 cups of pineapple juice.

If you have 24 cups of pineapple juice divide 24 by 1.5 to get 16 cups of papaya juice. 16:24.

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2 years ago

Please answer correctly

Lubov Fominskaja [6]

Answer:

for the question all the way on the bottom, for the pizza everyone paid 2.59$ each

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Read 2 more answers

Where was a error made in combining and solving the equation below?

Lera25 [3.4K]

It should be a positive 5 not a negative so the error was made at the end because u divide

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3 years ago

What is the equation 12= x+ 3

IgorC [24]

X=12 because you would sub the 3 on both sides

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3 years ago