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3 years ago

Multiplying fractions by whole numbers

Mathematics

1 answer:

Bezzdna [24]3 years ago

8 0

Answer:

its easy

Step-by-step explanation:

take 1/2 times 5 you turn 5 into 5/1 then multiply 10/2 then simplify you get 5

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Factor 2n(n + 3) - 5(n + 3).

Vilka [71]

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

A. (n + 3) (2n - 5)

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4 years ago

Is the graph proportional?

anzhelika [568]

Answer:

Yes, the graph represents a proportional relationship. No, the graph does not represent a proportional relationship. It is a straight line, but it does not intersect the point (0, 0).

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4 years ago

LIST PRICE: PRICE INCLUDING TAX:

mamaluj [8]

8.75 9.00 that’s the answer

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3 years ago

The naturalist views an elephant in the distance, but he doesn’t know how far away the elephant is from him. He takes a view to

andrezito [222]

Answer:

10.11 feet

Step-by-step explanation:

Let H ft be the elephant's height and x ft be the initial distance from naturalist to the elephant.

1. Naturalist takes a view to find the a 22 degree angle of elevation, then

$\tan 22^{\circ}=\dfrac{H}{x}.$

2. Naturalist moves backwards from the elephant pacing off a distance of 27 feet, the distance from naturalist to the elephant becomes (x+27) ft. He takes a second view and determines a new angle of elevation of 11 degrees. Then

$\tan 11^{\circ}=\dfrac{H}{x+27}.$

3. Solve the system of two equations:

$\left\{\begin{array}{l}\tan 22^{\circ}=\dfrac{H}{x}\\\tan 11^{\circ}=\dfrac{H}{x+27}\end{array}\right.\Rightarrow \dfrac{x+27}{x}=\dfrac{\tan 22^{\circ}}{\tan 11^{\circ}}\approx 2.0785,\\ \\ \\x+27=2.0785x,\\ \\1.0785x=27,\\ \\x\approx 25.0347\ ft.$

Then

$H=x\cdot \tan 22^{\circ}\approx 10.11\ ft.$

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3 years ago

This visual representation shows the sets of real numbers. Which statement is true regarding the number sets? a. All integers ar

MAVERICK [17]

Answer:

Step-by-step explanation:

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4 years ago