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solmaris [256]
3 years ago
13

Simplify. (-9x^2+3x+5) - (8x^2-5x-6)+(-4x^2 – 2x-8)

Mathematics
1 answer:
leva [86]3 years ago
6 0

Answer:

-21x^2+6x+3

Step-by-step explanation:

distributive property

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The solution of the equation 2d - 6 = 5 is _____.
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Step-by-step explanation:

2d - 6 = 5

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The rectangular rug has side lengths of 3 and 4 ft. What is the length of the diagonal? Draw a picture of the problem and solve.
Nadusha1986 [10]

ANSWER

The length of the diagonal is 5 ft

EXPLANATION

The diagram of the rug with the diagonal is:

The diagonal and the sides form a right triangle, so we can use the Pythagorean theorem to find x, the length of the diagonal:

\begin{gathered} x^2=3^2+4^2 \\ x=\sqrt[]{9+16} \\ x=\sqrt[]{25} \\ x=5 \end{gathered}

7 0
1 year ago
If the diameter of a youth baseball is 2. 8 inches and the diameter of an adult softball is 3. 8 inches, what is the approximate
Molodets [167]

The approximate difference in their volumes is 17.2 cubic inches

<h3>How to determine the difference in the volume?</h3>

The given parameters are:

Diameter, d = 2.8

Diameter, D = 3.8

The radii are the half of the diameter.

So, we have:

r = 1.4

R = 1.9

The volume of the balls is then calculated using:

V = \frac{4}{3}\pi r^3

The difference is then represented as:

D = \frac{4}{3}\pi (R^3 - r^3)

Substitute known values

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Evaluate

D = 17.2

Hence, the approximate difference in their volumes is 17.2 cubic inches

Read more about volumes at:

brainly.com/question/1972490

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2 years ago
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