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2 years ago

2 - 28 x ² y 4, 4x²y 60xy² What is the GCF?

1 answer:

8 0

The great eats common factor known as GCF is the factor that fits in all the terms. In the equation given there is no GCF

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Is of 12 equal to 9? no

Vesnalui [34]

Answer:

12=9

Obviously

.................

4 0

2 years ago

An SRS of 450 450 high school seniors gained an average of ¯ x = 20 x¯=20 points in their second attempt at the SAT Mathematics

maria [59]

Answer: (15.47, 24.53)

Step-by-step explanation:

We know that the confidence interval for population mean is given by :_

$\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}$

, where n= sample size.

$\sigma$ = standard deviation.

$\overline{x}$ = sample mean.

z*= Critical value.

Given : n= 450

$\overline{x}=20$

$\sigma=49$

Critical value for 95% confidence = z*=1.96 [From z-value table]

Then, the 95% confidence interval will be :-

$20\pm (1.96)\dfrac{49}{\sqrt{450}}$

$\approx 20\pm (1.96)(2.31)$

$\approx 20\pm 4.53$

$=(20-4.53,\ 20+4.53)=(15.47,\ 24.53)$

Hence, the 95% confidence interval for the mean change in score μ μ in the population of all high school seniors. : (15.47, 24.53)

3 0

2 years ago

I'm making a table.

viva [34]

I hope this picture helps, but next time try to chose a number to cancel out the fraction. Example, y=1/3x+4 chose 3,6,9 and other multiples of 3.

5 0

3 years ago

I really need help with this question. Can I get a explanation too?

aniked [119]

Answer:

Step-by-step explanation:

Find the surface area:

Bottom base: 57 × 27 = 1,539

Top base: 21 × 27 = 567

Rectangular face: 23 × 27 = 621

Trapezoidal face: (21 + 57) ÷ 2 × 15 = 585

1,539 + 567 + 621 + 621 + 585 + 585 = 4,518

The surface area is 4,518 square inches

3 0

2 years ago

F (x) = √2X-6 What is f(5)?

inessss [21]

Answer:

f(5) = 2

Step-by-step explanation:

Given:

Function f(x) = $\sqrt{2x - 6}$

For x=5 :

f(5) = $\sqrt{2*5 - 6}$ = $\sqrt{4}$ = 2

7 0

2 years ago