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2 years ago

I need a A in math can you help me with this answer

Mathematics

1 answer:

loris [4]2 years ago

6 0

Answer: 13

Step-by-step explanation:

12^2+5^2=13^2

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Pleeeaaaase help me #16

-BARSIC- [3]

I think K=1.123
you have to find by how much it's increasing, think of 6(1/2) times WHAT equals 7(1/3)
6(1/2)a=7(1/3)
a=1.123
That means each side will be the same times 1.123
x=4.492
you can round that to 4.49 or 4.5 or 5

3 0

2 years ago

HELP!!! MATH!!! 100 PTS !!!

Vikentia [17]

Answer:

(f^−1)′(6)=1/(f'(f^-1(6)))

(f^−1)′(6)=1/(f'(f^-6)))

I hope this helps.

4 0

1 year ago

A random sample of 8 recent college graduates found that starting salaries for architects in New York City had a mean of $42,653

ycow [4]

Answer:

C. (36337.32, 48968.68)

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.96*\frac{9114}{\sqrt{8}} = 6315.68$

The lower end of the interval is the sample mean subtracted by M. So it is 42653 - 6315.68 = 36337.32.

The upper end of the interval is the sample mean added to M. So it is 42653 + 6315.68 = 48968.68.

So the correct answer is:

C. (36337.32, 48968.68)

3 0

2 years ago

What happens to a figure that is dilated by a factor of ½ .

marshall27 [118]

Answer:

i really dont know

Step-by-step explanation:

6 0

2 years ago

The ratio of pink marbles to white marbles is 1:5 what percent of bag is pink marbles

sashaice [31]

1:5=1/5
1/5=20/100
20/100= 20%
20% of bag is pink marbles

6 0

2 years ago