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3 years ago

For males in a certain town, the systolic blood pressure is normally distributed with a

Mathematics

1 answer:

GREYUIT [131]3 years ago

7 0

Answer:

99.7%

Step-by-step explanation:

Note that 92 and 128 are 3 standard deviations from the mean

The emperical rule or the 68–95–99.7 rule states that 68% of outcomes are wihtin 1 standard deviation from the mean

95% of outcomes are within 2 standard deviations from the mean

99.7% of outcomes are within 3 standard devations from the mean

This is 3 standard deviations so the answer is 99.7

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What is the simplified answer of ∛27×250

Kaylis [27]

Answer:

750 if just 27 is being rooted

18.9 if 27 x 250 is being rooted

Step-by-step explanation:

3 0

2 years ago

Donna has a $300 loan through the bank she is charged a simple rate The total interest she paid on the loan was $63 As a percent

Black_prince [1.1K]

Answer:

21%

Step-by-step explanation:

($63*100%) / $300 = 21%

3 0

2 years ago

Let V be the volume of the solid obtained by rotating about the y-axis the region bounded y = 4x and y = x2/4 . Find V by slicin

aliya0001 [1]

Answer:

Step-by-step explanation:

Consider the graphs of the $y = 4x$ and $y = \frac{x^{2} }{4}$ .

By equating the expressions, the intersection points of the graphs can be found and in this way delimit the area that will rotate around the Y axis.

$4x = \frac{x^{2} }{4} \\ x^{2} = 16x \\ x^{2} - 16x = 0 \\ x(x-16) = 0$ then $x=0$ o $x=16$ . Therefore the integration limits are:

$y = 4(0) = 0$ and $y = 4(16) = 64$

The inverse functions are given by:

$x = 2 \sqrt{y}$ and $x = \frac{y}{4}$ . Then

The volume of the solid of revolution is given by:

$\int\limits^{64}_ {0} \, [2\sqrt{y} - \frac{y}{4}]^{2} dy = \int\limits^{64}_ {0} \, [4y - y^{3/2} + \frac{y^{2}}{16} ]\ dy = [2y^{2} - \frac{2}{5}y^{5/2} + \frac{y^{3}}{48} ]\limits^{64}_ {0} = 546.133 u^{2}$

6 0

3 years ago

An adult male alligator may weigh 350 pounds. A newly hatched alligator weighs only 1/8 pound. The adult weighs how many times t

IrinaK [193]

131.25 more than the newly hatched alligator

7 0

3 years ago

Read 2 more answers

You roll a pair of six-sided number cubes, numbered 1 through 6. What is the probability of rolling two odd numbers? (Enter your

lbvjy [14]

Answer:

1/4 or 25%

Step-by-step explanation:

The probability for rolling an odd number is 50% or $\frac{1}{2}$ because there are 3 odd numbers, (1, 3, 5) and 6 total outcomes (1, 2, 3, 4, 5, 6). $\frac{3}{6} =\frac{1}{2}$

The probability for rolling two odd numbers in a row is

$\frac{1}{2} *\frac{1}{2} =\frac{1}{4}$

So, the probability of rolling an odd number twice is 25% or $\frac{1}{4}$ .

8 0

3 years ago