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3 years ago

11

I don't understand ....the teacher gave us this question with a diagram ... if you get it correctly I will mark you as the brain

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1 answer:

Georgia [21]3 years ago

4 0

Answer:

I think the answer is a I think

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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

Read 2 more answers

A 12-foot ladder is placed four feet from the base of a wall.

nikitadnepr [17]

Answer:8sqrt 2 or sqrt 128

Step-by-step explanation:

We can use the Pythagorean Theorem. Since the ladder is leaning against the wall, it is the hypotenuse. It is also 4 feet away from the wall so 12^2-4^2=b^2 b^2=128 so b=8sqrt 2 or sqrt 128.

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3 years ago

A TV has a listed price of $708.99 before tax. If the sales tax rate is 9.75% , find the total cost of the TV with sales tax inc

lakkis [162]

Answer:

$778.12

Step-by-step explanation:

Before Tax Price: $708.99

Sale Tax: 9.75% or $69.13

After Tax Price: $778.12

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2 years ago

Aeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

m_a_m_a [10]

Answer:o

Step-by-step explanation:

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3 years ago

The value of 100-30÷5 with parentheses can have a value of 1l4 or 49. EXPLAIN.

svetlana [45]

The only possible answers are 94 or 14. (100-30)/5= 70/5=14. 100-(30/5)= 100-6=94. These are the only two possible answers.

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3 years ago