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2 years ago

Can someone help me with this? I'm getting a 0 in a) but the book has -1/5 answer. I'm confused.

Mathematics

1 answer:

jok3333 [9.3K]2 years ago

7 0

Replace the x values in the equation, then solve:

[(-2)^2+4]/[(-2)^2-2(-2)-48=

(4+4)/4+4-48=

8/8-48=

8/-40=

-1/5

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If KM = NO and KM = PQ, then NO = PQ.

charle [14.2K]

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2 years ago

Which of the expressions below have exactly 3 terms? Select all that apply.

Fynjy0 [20]

Answer:

C. 6x + 9 - 3x^2

Step-by-step explanation:

We have 4 expressions and are being asked which has 3 terms.

When it comes to terms, terms are numbers that are different, it could be separated through a variable, square root, symbol, e.t.c.

So when looking for an answer, we need 3 numbers with different variables or symbols, let's look

A. only has two, 10x and 8. Therefore it is wrong.

B. has 4 terms, 3x^3, 6x^2, 9x, and 12. Therefore it is wrong.

C. is correct because it has 3 terms, 6x, 9, and 3x^2.

D. has 2 terms, 833 and 12x, though 16 is there, it is the same as 833, therefore not counting it as its own term.

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1 year ago

What IS the simplified value of the expression below? -2.6 + 5.8

Lerok [7]

Answer:

3.2

Step-by-step explanation:

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2 years ago

You want to put a 4 inch thick layer of topsoil for a new 28 ft by 14 ft garden. The dirt store sells by the cubic yards. How ma

Digiron [165]

Answer:

Step-by-step explanation:

1 yard = 3 feet = 36 in

so 1 in = 1/36 yard, 1 ft = 1/3 yard.

The volume of the layer of the topsoil, is:

4 in * 28 ft * 14 ft = 4 *(1/36)*23*(1/3)*17*(1/3) yard cubed =

(4*28*14)/(36*3*3)= 1955/324=

The store only sells increments of 1/4 = 0.25 cubic yards.

we need 6.034/0.25=

So we need to buy 25 (24 will not be enough) increments of 1/4 cubic yards.

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2 years ago

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LenaWriter [7]

Answer:

9a⁶b³c⁹

Step-by-step explanation:

Just divide the 27 by 3 since 27a⁶b³c⁹ is a single number

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2 years ago