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yawa3891 [41]
4 years ago
9

The function F described by ​F(x)equals=2.75xplus+71.48 can be used to estimate the​ height, in​ centimeters, of a woman whose h

umerus​ (the bone from the elbow to the​ shoulder) is x cm long. Estimate the height of a woman whose humerus is 30.93 cm30.93 cm long. Round your answer to four decimal places.
Mathematics
1 answer:
Kryger [21]4 years ago
3 0

Answer:

156.5375 cm

Step-by-step explanation:

The function used to estimate the height is F(x)

F(x) = 2.75x + 71.48

The humerus is xcm long. When x = 30.93cm, we put x = 30.93 into the function F(x)

F(30.93) = 2.75(30.93) + 71.48

= 85.0575 + 71.48

= 156.5375 cm(4 decimal places)

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When I multiply 9x9 how would I go about counting by 9s?
11111nata11111 [884]

Answer:

If you're looking for a shortcut, I usually find the number 1 less than what you are multiplying 9 by, this case 8, and then add a number that gets to 9.

So 9x6 would be:

5+4=9

54

Step-by-step explanation:

When multiplying by 9s the product's two numbers added together =9.

Sorry if this is confusing. Hope this helps though.

5 0
3 years ago
A duck flew at 18 miles per hour for 3 hours,
mrs_skeptik [129]
First, you do 18 miles times 3 hours.
The answer is 54
The you do 15 miles time 2 hours
The answer is 30
You can add them all up and get 84 miles total. (D)
5 0
4 years ago
Read 2 more answers
​<br> ​<br> ​<br> ​​ <br> ​12x−5y=−20<br> ​y=x+4<br> ​​
Alborosie
X = 0
y = 4
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7 0
3 years ago
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How much is the future value on this financial transaction, P=10,000.00,r=5%,and t=3 years?
Ulleksa [173]

Answer:

A= $11500

Step-by-step explanation:

Step one:

given data

P=10,000.00

r=5%,and

t=3 years

Required

The final amount A

Step two:

assuming a simple interest we have

A= P(1+rt)

substitute

A= 10000(1+0.05*3)

A= 10000(1+0.15)

A=10000(1.15)

A=$11500

4 0
3 years ago
A fourth grade class of 28 students is given a standardized math test. The mean score of the 12 boys is 25 with a standard devia
Mashcka [7]

Answer:

The standard error for the sampling distribution is 1.323.

Step-by-step explanation:

Let <em>X</em> = scores of girls and <em>Y</em> = scores of boys.

The information provided is:

\bar x=24\\s_{x}=4\\n_{x}=16\\\bar y=25\\s_{y}=3\\n_{y}=12

As the population standard deviations are not known, use a pooled standard deviation to estimate the standard error of the sampling distribution.

The formula of pooled standard deviation is:

S_{p}=\sqrt{\frac{s_{x}^{2}}{n_{x}^{2}}+\frac{s_{y}^{2}}{n_{y}^{2}}}

Compute the standard error for the sampling distribution as follows:

SE=\sqrt{\frac{s_{x}^{2}}{n_{x}^{2}}+\frac{s_{y}^{2}}{n_{y}^{2}}}=\sqrt{\frac{4^{2}}{16}+\frac{3^{2}}{12}}=\sqrt{1+\frac{9}{12}}=\sqrt{\frac{21}{12}}=1.323

Thus, the standard error for the sampling distribution is 1.323.

7 0
3 years ago
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