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Gnom [1K]
2 years ago
9

Factorise x squared + 4x -12

Mathematics
2 answers:
kompoz [17]2 years ago
7 0
X
{x}^{2}  + 4x - 12



= (x+6) (x-2)
evablogger [386]2 years ago
7 0

Answer:

(x + 6)(x - 2)

Step-by-step explanation:

Consider the product of the factors of the constant term which sum to give the coefficient of the x- term, that is

product = - 12 and sum = + 4

The factors are + 6 and - 2, hence

x² + 4x - 12 = (x + 6)(x - 2)



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NEED HELP ASAP!!!!!!!!
nikklg [1K]
B. 195

It’s B because if you divide 584 with 3 it equals 194.66 but you round up and it becomes 195.
8 0
3 years ago
g Which of the following is not appropriate to use the t-confidence interval for . a. The sample is based on a simple random sam
KATRIN_1 [288]

Answer:

d. The population standard deviation is known.

Step-by-step explanation:

T-distribution or Z-distribution, which to use?

If we have the population standard deviation is known, we use the z-distribution.

Otherwise, if we only have the standard deviation for the sample, we use the t-distribution.

Which of the following is not appropriate to use the t-confidence interval for

When the population standard deviation is known, so letter d.

7 0
2 years ago
The perimeter of a rectangular painting is 324 centimeters. if the width of the painting is 67 centimeters, what is its length?
Nina [5.8K]
I hope this helps you



Perimeter =2 (width +length )


324=2 (67+length )


162-67=length


length =95
6 0
3 years ago
What expression represents the volume of the cylinder, in cubic units?
Marat540 [252]

Answer:

It's A

Step-by-step explanation:

I hope that it's a correct answer.

7 0
3 years ago
Darius and Barb are playing a video game in which the higher score wins the game. Their scores are shown below. Darius’s scores:
Bumek [7]

Answer:

Darius is correct if only the median score is considered.

Step-by-step explanation:

Darius scores are; 96, 54,120, 87, 123

arrange the scores in increasing order;

54,87,96,120,123

mean = (54+87+96+120+123)/5 =480/5 =96

median =96

Barb's scores are  92,94,96,98,110

mean=(92,94,96,98,110)/5 =490/5=98

median score=96

⇒if the median score only is considered; then it is a tie because the score is 96 in both players.

8 0
3 years ago
Read 2 more answers
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