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nirvana33 [79]
2 years ago
6

In 1998 a San Diego reproductive clinic reported 49 births to 207 women under the age of 40 who had previously been unable to co

nceive.
The clinic wants to cut the stated margin of error in half. How many patients' result must be used?
A. 103

B. 25
C. 828

D. 158
E. 79
Mathematics
1 answer:
RUDIKE [14]2 years ago
7 0

Answer:

828

Step-by-step explanation:

To cut the margin of Error in half, the clinic needs quadruple of the sample size.

If the sample size is 207 women,

Then quadruple of 207 = 4 * 207 = 828

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4. Susan is detaching for a new apartment . Her month salary is 1,800, and she wants to spend no more the 35% of her budget on r
lilavasa [31]

Answer:

Susan is willing to spend $630.

Step-by-step explanation:

You want to find out 35% of her salary.

First, you need to convert the percentage to a decimal.

35% = 0.35

To find out the maximum amount Susan is willing to pay, we need to multiply 0.35 (35%) by her salary ($1800)

0.35 x 1800 = $630


6 0
3 years ago
Add the following numbers. (-4) + (-9) =
soldi70 [24.7K]

Answer:

-13

Step-by-step explanation:

Adding a negative means that you subtract the number as + (-) = -

This means that the equation is -4-9=-13.

6 0
3 years ago
A right triangle's height is 3 times the length of its base. if the area of the triangle is 486, what is the height?
Irina-Kira [14]
The formula of the area of a triangle:
A_\Delta=\dfrac{bh}{2}
b - the bash - the height
We have:
b - the base3b - the height486 - the area

Substitute:
\dfrac{3b\cdot b}{2}=486\ \ \ |\cdot2\\\\3b^2=972\ \ \ |:3\\\\b^2=324\to b=\sqrt{324}\\\\b=16\to h=3b=3\cdot18=54
Answer: The length of the height is equal 54 units.
4 0
3 years ago
Find value of X. Please show steps:)
Viefleur [7K]
10 degrees is in a 90 degree angle 
90-10 =80
use sin 
sin(80)=9/x
get x alone
x=9/sin(80)

4 0
3 years ago
Question Help
hram777 [196]

Answer:

.3%, 21/7000=.003

Step-by-step explanation:

to make it by percent you multipy by 100

5 0
2 years ago
Read 2 more answers
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