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N76 [4]
1 year ago
6

Consider the following two studies reported in the New York Times:

Mathematics
1 answer:
Setler [38]1 year ago
8 0

Answer:

Step-by-step explanation:

1) Not neccesarily. There might be a small correlation, however, you cant predict if a person will have breast Cancer only due to their bone mineral density because the probability for a woman to have breast cancer is pretty low (below 5%). According to the data given, women with high bone density are just 3 times more likely to have breast cancer, thus, the probability will be just 15%. There might be a correlation but you need more information than just the mineral bone density to predict breast cancer, there might be other causes that are not related with mineral bone density.

2) It is impractical to conduct such an experiment. The problem lies in the fact that you cant fix the amount of mineral bone density a woman have. 2 women with different BMD might be quite different in different aspects one from the other, so you wont be completly sure that the cancer was caused in one case just because of the mineral bone density alone. An ideal experiment will have identical bodies differing on mineral bone density alone, but that is in practice impossible to do.

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One pound of grapes costs $1.55. Which equation correctly shows a pair of equivalent ratios that can be used to find the cost of
Shalnov [3]

Answer:

StartFraction 1.55 over 1 EndFraction = StartFraction 3.5 over x EndFraction

Step-by-step explanation:

1 = 1.55

x = 3.5

1.55/1 =3.5/x

1.55/1 = 3.5/x correctly shows the equivalent ratios

5 0
1 year ago
Read 2 more answers
An Adult ticket at an amusement park costs $24.95 and a child's ticket costs $15.95. A group of 10 people paid $186.50 to enter
leva [86]

Answer:

There were 3 adults

Step-by-step explanation:

Step 1: Derive the first expression

a+c=10...equation 1

where;

a=number of adults

c=number of children

And total number of people=10

Step 2: Derive the second expression;

Total cost of tickets=(price per child ticket×number of children)+(price per adult ticket×number of adults)

where;

Total cost of tickets=$186.50

price per child ticket=$15.95

price per adult ticket=$24.95

number of children=c

number of adults=a

replacing;

(15.95×c)+(24.95×a)=186.5

24.95 a+15.95 c=186.5....equation 2

Step 3: Combine equation 1 and 2 and solve simultaneously

24.95 a+15.95 c=186.5

-

24.95(a+c=10)

(24.95 a-24.95 a)+(15.95 c-24.95 c)=186.5-(24.95×10)

-9 c=-63

c=-63/-9

c=7

replace the value for c in equation 1

a+c=10

a+7=10

a=10-7

a=3

There were 3 adults

6 0
2 years ago
help me the area of a rectangular roof of a doghouse is 756 square inches. the length of the roof is 108 inches. how many inches
Andrei [34K]
A=L*w \\ A=756 \ square \ inches \\L=108 \ inches  \\ \\ 108*w=756 =>w=756:108 \\ \\ w=7 \ inches
5 0
1 year ago
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Kari is flying a kite. She releases 50 feet of string. What is the approximate difference in the height of the kite when the str
nirvana33 [79]
Sinα=h/L  where h=height, L=string length...

h=Lsinα  so

h(25°)=50sin25≈21.1ft

h(45°)=50sin45≈35.4ft
5 0
2 years ago
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The system of equations y = one-fourth x minus 1 and y = negative one-half x minus one-fourth is shown on the graph below. On a
love history [14]

Step-by-step explanation:

<u>Step 1:  Convert into expressions</u>

y = one-fourth x minus 1 → y = \frac{1}{4}x-1

y = negative one-half x minus one-fourth → y = -\frac{1}{2}x - \frac{1}{4}

They intersect at (1, -\frac{3}{4})

Answer: Option A, (1, negative three-fourths)

8 0
1 year ago
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