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arlik [135]
4 years ago
9

What is x square minus x minus 12=0?

Mathematics
1 answer:
bonufazy [111]4 years ago
6 0
I believe it's 12=0

Hope I helped! ( Smiles )

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drek231 [11]
A and D are the answers
7 0
3 years ago
Determine the sample size required to estimate the mean score on a standardized test within 2 points of the true mean with 99% c
Inga [223]

Answer:

280

Step-by-step explanation:

Margin of error = critical value × standard error

Here, the margin of error is 2.

At 99% confidence, the critical value is z = 2.576.

The standard error is s / √n = 13 / √n.

2 = 2.576 (13 / √n)

2 = 33.49 / √n

√n = 16.74

n = 280.4

Rounded to the nearest person, the required sample size is 280.

5 0
3 years ago
Which figure shows a line of reflectional symmetry for the letter T? A letter T is folded at the horizontal line. A letter T is
Reika [66]

Answer:

A letter T is folded vertically through the middle.

Step-by-step explanation:

Reflectional symmetry refers to the symmetry of line that divides the given shape into two equal halves. The halves represent the mirror reflection of each other. The line of symmetry is drawn to show the reflection and it acts as a mirror. For the letter 'T', the reflectional symmetry will be drawn vertically in the middle of the letter. The line divides the letter into two equal halves with mirror images.

6 0
3 years ago
Read 2 more answers
How do you solve this (x+3)+(7x+2)
VladimirAG [237]

Answer:

8x + 5

Explanation:

x + 3 + 7x + 2

Combine Like Terms

= x + 3 + 7x + 2

= (x + 7x) + (3 + 2)

= 8x + 5

8 0
3 years ago
Read 2 more answers
If f(x)= 2x-7, what is f(-2)?
Romashka [77]

Answer:

f(-2)=-11

Step-by-step explanation:

f(x)=2x-7

f(-2)=2(-2)-7=-4-7=-11

4 0
4 years ago
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