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3 years ago

What is the slope of (9,6) (21,14)

Mathematics

2 answers:

alisha [4.7K]3 years ago

6 0

You plug in (9,6) and (21,14) to the slope formula (m= y2-y1 / x2-x1) and get m= 2/3

Delvig [45]3 years ago

5 0

You would write m= y2 -y1/x2-x1 so the answer would be 8/12

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What is 9^2+a= square root of 113 what is the value of a

sergiy2304 [10]

A= -81 + square root of 113
a≈ -70.36985418

5 0

3 years ago

A research company desires to know the mean consumption of meat per week among people over age 40. A sample of 610 people over a

Papessa [141]

Answer: $(3.0,\ 3.2)$

Step-by-step explanation:

Confidence interval for population mean is given by :-

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$ (1)

, where $\overline{x}$ = Sample mean

$z_{\alpha/2}$ = Critical z-value

$\sigma$ = Population standard deviation.

n= Sample size.

As per given , we have

n= 610

$\sigma=1.1$

$\overline{x}=3.1$

Significance level for 85% confidence : $\alpha=1-0.85=0.15$

By z-table critical two tailed z-value : $z_{\alpha/2}=z_{0.075}=1.44$

Put all values in (1) , we get

$3.1\pm 1.44\dfrac{1.1}{\sqrt{610}}$

$3.1\pm 1.44\dfrac{1.1}{24.698}$

$3.1\pm 0.064$

$=(3.1-0.064,\ 3.1+0.064)=(3.036,\ 3.164)\approx(3.0,\ 3.2)$

Hence, the 85% confidence interval for the mean consumption of meat among people over age 40. = $(3.0,\ 3.2)$

5 0

3 years ago

Find the answer A. B. C.

KATRIN_1 [288]

B. 68
I use the formula A= bh/2 it’s the same thing
8x17 = 136
136/2 = 68

6 0

3 years ago

I forgot how to find x

GuDViN [60]

You would do 2x-3+x+3x-15=360
combine like terms which then gives you
5x-18=360 then you would add 18 to both sides giving you
5x=378
and then you divide by 5 on both sides which will then give you your answer x=?

6 0

3 years ago

Whats the square root of 42

katovenus [111]

Answer:

6.48....

Step-by-step explanation:

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3 years ago

Read 2 more answers