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Ahat [919]
3 years ago
11

Which value must be added to the expression x2 + 12x to make it a perfect-square trinomial? 6 36 72 144

Mathematics
2 answers:
mote1985 [20]3 years ago
4 0
"The correct answer is 36.
A perfect square trinomial can be factored into this form: (x+a)^2Note that (x+a)^2 = x^2 + (2a)x + a^2To find the missing number, we should take the 12 (in the 12x term) and divide it by two to get 6. This number squared will be the missing number at the end of the trinomial.
Let's check that this is the correct answer.(x+6)^2 = x^2 + 12x + 36Indeed, 36 is the correct answer."
lisov135 [29]3 years ago
3 0

Answer:

36

Step-by-step explanation:

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Ket [755]

Answer:

2, 6, and 7

Step-by-step explanation:

3n is by itself because theres no other numbers that have the letter n.

6m and -11m are like terms bcs they both have the letter m (variable)

-3 and -18 are both like terms bcs they are both just numbers (or constants whatever)

so you would choose options 2, 6, and 7! hope this helps! :)

6 0
3 years ago
Use the law of exponents to rewrite 4^-3
gregori [183]

Answer:

4^-3 = 1/64

Step-by-step explanation:

Rule for negative exponents:

Indicates a reciprocal.

b^-n = 1 / b^n

So...

4^-3 = 1 / 4^3

       = 1/64

I hope this helps :)

4 0
3 years ago
(2×/×+3)- (×/×-3)=(3÷3-×)​
xz_007 [3.2K]

Answer:

x = 6

Step-by-step explanation:

(2×/×+3)- (×/×-3)=(3÷3-×)​

2x/x+3-x/x+3= 1-x

2 + 3 - 1 + 3 - 1 = x

8-2 = x

x = 6

8 0
3 years ago
Chris estimated the product of 37 and 86 by multiplying 40x90.Tell how you know if this is greater than or less than the actual
vichka [17]

Answer:

Greater than the actual product because both numbers where rounded up to the closest tenth.

Step-by-step explanation:

37 x 86 - original

40 x 90 - rounded

37 < 40 - greater than

86 < 90 - greater than

Checking --->

37 x 86 = 3182

40 x 90 = 3600

3182 < 3600

6 0
3 years ago
Esther, Vida, and Clair were asked to consider two different cash flows: GH¢1000 that they could receive today and GH¢3000 that
steposvetlana [31]

Answer:

Step-by-step explanation:

The explanation is given in the attached picture below

7 0
4 years ago
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