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3 years ago

Please help i cant figure out how to do this stupid problem

Mathematics

2 answers:

Eva8 [605]3 years ago

4 0

Answer:

(x+8)^2=63

Step-by-step explanation:

xxMikexx [17]3 years ago

3 0

Answer:

(x + 8)^2 = 1.

Step-by-step explanation:

We use the identity x^2 + ax + b = (x + a/2)^2 - (a/2)^2 + b.

x^2 + 16x + 63 = 0

(x +16/2)^2 - (16/2)^2 + 63 = 0

(x + 8)^2 - 64 + 63 = 0

(x + 8)^2 - 1 = 0

(x + 8)^2 = 1.

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The sum of a number and three more than the number.

Likurg_2 [28]

Answer:

Step-by-step explanation:

7 0

2 years ago

PLEASE HELP ASP!!!

bixtya [17]

Answer:

B. all whole integers

Step-by-step explanation:

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4 0

2 years ago

If (NN)^3 = 8518N, what digit does N represent?

sveticcg [70]

Answer:

Step-by-step explanation:

I am going to solve this by trial and error:

(A) 1

Is: $(11)^{3} = 85181$ ?

$(11)^3 = 1331$

So 1 is not the digit of N.

(B) 2

Is: $(22)^{3} = 85182$ ?

$22^3 = 10648$

So 2 is not the digit of N.

(C) 4

Is: $(44)^{3} = 85184$ ?

$44^3 = 85184$

Correct, so the answer is c.

(D) 5

$55^3 = 166375 \neq 85185$

(E) 6

$66^3 = 287496 \neq 85186$

7 0

3 years ago

- 2x+3 = -X+12<br> Help me please

Harrizon [31]

Answer:

-9

Step-by-step explanation:

-2x + 3 = -x + 12

move -x over by adding

-x + 3 = 12

move the 3 over by subtracting

-x = 9

divide by - to get the x positive

x = -9

7 0

3 years ago

Read 2 more answers

it takes an air pump 4.0 minutes to fill a twin sized air mattress (39 by 8.75 by 75 inches). How long will it take to fill a qu

Ivahew [28]

Volume of twin sized mattress =

39* 8.75* 75 = 25593.35 cubic inch

Volume of queen sized mattress =

60* 8.75* 80 = 42000 cubic inch

To fill 25593.35 cubic inch it takes 4 minutes

To fill 1 cubic inch it will take = $\frac{4}{25593.35}$ minutes

So to fill 42000 cubic inch it will take = $\frac{4}{25593.35} * 42000$

= 6.56 minutes.

7 0

3 years ago