3 years ago

What is the measure of angle EFD? 37.5° 45° 47.5° 55°

Mathematics

2 answers:

erastova [34]3 years ago

7 0

Answer:

it is D on edg

Step-by-step explanation:

laiz [17]3 years ago

3 0

Answer:

Step-by-step explanation:

Please try reposting with a picture so brainly users can help answer this question :)

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How many of the first 15 positive integers can be written as the sum of three squares?

Jlenok [28]

Answer

no number from the following list can be expressed as the sum of three squares: 7, 15, 23, 31, 39, 47, ect... so only once

Step-by-step explanation:

nono dont touch me there this is my nono square

3 0

2 years ago

F (x)=(3x+7)^2 then f (1) =

g100num [7]

Y=(3[1]+7)^2
y=(10)^2
y=100

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3 years ago

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A woman is randomly selected from the 18-24 age group. For women of this group, systolic blood pressures (in mm Hg) are normally

dybincka [34]

Answer:

0.0274

Step-by-step explanation:

The mean is $\mu =114.8$ and the standard deviation is $\sigma =13.1.$

Calculate

$Z=\dfrac{X-\mu}{\sigma}$

for $X=140:$

$Z=\dfrac{140-114.8}{13.1}\approx 1.9237.$

If $X\sim N(114.8,\ 13.1),$ then $Z\sim N(0,1)$

and

$Pr(X>140)=Pr(Z>1.9237).$

Use table for normal distribution probabilities to get that

$Pr(Z>1.9237)=1-Pr(Z\le 1.9237)=1-0.9726=0.0274.$

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3 years ago

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An 80% confidence interval is (150, 170). What is the margin of error?

Viefleur [7K]

Answer:

Step-by-step explanation:

it is what it is

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3 years ago

Which equivalent expression would you set up to verify the associative property of addition for (3x + 4) + ((5x2 – 1) + (2x + 6)

saw5 [17]

(3x+4)+(5x2-1)+(2x+6)

remove unnecessary parenthesis

3x+4+(5x2-1)+(2x+6)

3x+4+(10-1)+2x+6

subtract the numbers

3x+4+9+2x+6

collect the like terms

5x+4+4+9+6

5x+19

4 0

3 years ago

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