2 years ago

Which equation is an identity?

Mathematics

1 answer:

Aloiza [94]2 years ago

4 0

Answer:

Step-by-step explanation:

The equation 2x = 2x is an identity.

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A sparkling-water distributor wants to make up 200 gal of sparkling water to sell for $ 5.00 per gallon. She wishes to mix thre

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Answer:

500

Step-by-step explanation:

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3 years ago

A man 6 feet tall casts a shadow that is 11 feet long. A building casts a shadow of 139 feet long. The building is tall. Round y

dmitriy555 [2]

Given:

Height of man = 6 ft

Height of man's shadow = 11 feet

Height of building's shadow = 139 feet

To find:

The height of the building.

Solution:

We know that the heights of the objects and there shadows are always proportional.

$\dfrac{\text{Height of man}}{\text{Height of man's shadow}}=\dfrac{\text{Height of the building}}{\text{Height of building's shadow}}$

Let x be the height of the building.

$\dfrac{6}{11}=\dfrac{x}{139}$

Multiply both sides by 139.

$\dfrac{6}{11}\times 139=x$

$\dfrac{834}{11}=x$

$75.8181...=x$

$x\approx 75.8$

Therefore, the building is 75.8 feet long.

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2 years ago

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Umnica [9.8K]

Answer:

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3 years ago

Steve has 12 biscuits in a tin.

AfilCa [17]

Answer:

The asnwwer is

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3 years ago

Which represents the inverse of the function f(x) = 4x?

Licemer1 [7]

Answer:

The inverse is 1/4x

Step-by-step explanation:

y = 4x

To find the inverse, exchange x and y

x = 4y

Solve for y

1/4 x = 4y/4

1/4x = y

The inverse is 1/4x = y

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2 years ago

Read 2 more answers