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3 years ago

I need help with thissss

Mathematics

1 answer:

alexandr1967 [171]3 years ago

5 0

Answer:

#4 is option one 18 miles

Step-by-step explanation:

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Help asap with math evaluate expression

madam [21]

Answer:

Step-by-step explanation:

you can simplify it by turning a²+b²/a-b

into

(a-b)²+2ab / a-b

eliminate the fraction

a-b +2ab

a=-1

b=-5

-1-(-5)+2*-1*-5

-1+5+10 = 14

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2 years ago

Complete the following statement given: QXR=NYC a.QX= ? b. Y=?

AfilCa [17]

Answer:

Step-by-step explanation:

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3 years ago

Which pair of number has the same greatest common factor as 48 and 78

Leno4ka [110]

Answer:

Step-by-step explanation:

48=2×2×2×2×3

78=13×2×3

48 has 5 factors.

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3 years ago

Number of Students

erma4kov [3.2K]

Answer: 15
Step-step-explanation:

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2 years ago

(23.01) In a randomized comparative experiment on the effect of dietary calcium on blood pressure, researchers divided 58 health

Paul [167]

Answer:

$113.7-2.154\frac{9.1}{\sqrt{29}}=110.06$

$113.7+2.154\frac{9.1}{\sqrt{29}}=117.34$

And the 96% confidence is given by (110.06; 117.34)

Step-by-step explanation:

Information given

$\bar X=113.7$ represent the sample mean

$\mu$ population mean (variable of interest)

s=9.1 represent the sample standard deviation

n=29 represent the sample size

Confidence interval

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

The degrees of freedom are given by:

$df=n-1=29-1=28$

The Confidence is 0.96 or 96%, the significance is $\alpha=0.04$ and $\alpha/2 =0.02$ , and the critical value would be $t_{\alpha/2}=2.154$

Replacing the info we got:

$113.7-2.154\frac{9.1}{\sqrt{29}}=110.06$

$113.7+2.154\frac{9.1}{\sqrt{29}}=117.34$

And the 96% confidence is given by (110.06; 117.34)

5 0

3 years ago