3 years ago

What number should be added to the expression x^2 + 6x to change it into a perfect square trinomal

1 answer:

5 0

Hello.

The correct is answer is 9.

You have to do half of 6 (3) and then square it that equals 9

So it should be <span> x^2 + 6x +9

Have a nice day</span>

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How many solutions does 3(2.4×+4)=4.1x+7+3.1x

Maru [420]

Step-by-step explanation:

$3(2.4x+4)=4.1x+7+3.1x\qquad\text{use the distributive property}\\\\(3)(2.4x)+(3)(4)=(4.1x+3.1x)+7\\\\7.2x+12=7.2x+7\qquad\text{subtract}\ 7.2x\ \text{from both sides}\\\\12=7\qquad\text{FALSE}\\\\Answer:\ \text{Zero (no solutions)}.$

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3 years ago

A church group set off from their church at 10:00AM for the forest. The group noted that

Anna71 [15]

Answer:

11l:50

Step-by-step explanation:

110 min = 1 hour and 50 minutes

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10 months ago

Is Amy’s answer accurate

Rom4ik [11]

Answer:

What do you mean??

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3 years ago

What is the factorization of the polynomial below<br>-x^2 - 15x - 56

Andrej [43]

Answer:

Step-by-step explanation:

This is more easily understood if you take out a common factor of -1

-1(x^2 + 15x + 56)

7*8 = 56

7 + 8 = 56

-1 (x +8)(x+7)

3 0

2 years ago

The principal P is borrowed and the loan's future value A at time t is given. Determine the loan's simple interest rater.

Anni [7]

Interest rate = 7%

I= PRT where I is the interest earned, p is the principal, r is rate as a decimal, and t is time in years.

A - P will give us the interest earned.

12,150 - 9,000 = 3,150

3150 = (9000)(r)(5)
3150 = 45,000r
r = 0.07
r = 7%

4 0

3 years ago