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3 years ago

What is 3k(-5k+21)+2(2.5k+90) <-- Confused please help

1 answer:

5 0

Use distributive prpoerty
a(b+c)=ab+ac

distribute each
3k(-5k+21)=-15k^2+63k

2(2.5k+90)=5k+180

so nowe we have
-15k^2+63k+5k+180
add like terms
-15k^2+68k+180
that is the answer

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What’s the answer to the word problem the difference of three times a number and 1

harina [27]

Answer:

There is no answer. I'm sorry but more information is needed in order to find the answer.

Step-by-step explanation:

However, the problem can be written.

It will look like:

3n - 1.

Since the number can be anything, this is not an answerable question because it must equal a number on the right side of the equation.

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2 years ago

Is it true that (x^2–3x+2)/(x –1) = x – 2, for all values of x? Justify your answer.

Nimfa-mama [501]

Answer:

x²-3x+2=0

x²-2x-x+2=0

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3 years ago

Line AB contains points A (3, −2) and B (1, 8). The slope of line AB is −5 negative 1 over 5 1 over 5 5

pentagon [3]

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answer
<span> −5 </span>

8 0

3 years ago

Read 2 more answers

1 + 1 = A 4 B 37 C 69 D. i. c. k

Shkiper50 [21]

Answer:

It is 2

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

(5a^2+6a+2)-(7a^2-7a-5)

krok68 [10]

For this case we must simplify the following expression: $(5a^ 2 + 6a + 2) - (7a^ 2-7a-5) =$

We eliminate the parentheses taking into account that:

$- * + = -\\- * - = +$

So:

$5a ^ 2 + 6a + 2-7a ^ 2 + 7a + 5 =$

We add similar terms taking into account that:

Equal signs are added and the same sign is placed.

Different signs are subtracted and the major sign is placed.

$5a ^ 2-7a^2 + 6a + 7a +2 +5 =\\-2a ^ 2 + 13a + 7$

Answer:

$-2a ^ 2 + 13a + 7$

8 0

3 years ago