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solmaris [256]
3 years ago
9

How long can the run be made?

Mathematics
1 answer:
defon3 years ago
6 0

Answer:

L=15\ m

Step-by-step explanation:

we know that

The perimeter of rectangle is equal to

P=2L+2W

In this problem we have

P=42\ m

W=6\ m

substitute in the formula and solve for L

42=2L+2(6)

simplify

21=L+(6)

L=21-6=15\ m

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An experiment is carried out 400 times.
MissTica

Answer:

You would expect the outcome to be void 240 times

Step-by-step explanation:

1000 x 0.24

6 0
4 years ago
a study studied the birth weights of 1,999 babies born in the United States. The mean weight was 3234 grams with a standard devi
Aleks [24]

Answer:

1899

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 3234

Standard deviation = 871

Percentage of newborns who weighed between 1492 grams and 4976 grams:

1492 = 3234 - 2*871

So 1492 is two standard deviations below the mean.

4976 = 3234 + 2*871

So 4976 is two standard deviations above the mean.

By the Empirical Rule, 95% of newborns weighed between 1492 grams and 4976 grams.

Out of 1999:

0.95*1999 = 1899

So the answer is 1899

8 0
3 years ago
Determine the rate of change and the initial value of the function,
Contact [7]
F(x) = 3x + 1.....this is the same as y = 3x + 1.

In y = mx + b form, which is what y = 3x + 1 is in, the rate of change (slope) is in the m position and the y int (the initial value) is in the b position.

y = mx + b
y = 3x + 1
ur rate of change (slope)...number in the m position = 3
ur initial value (y int)...number in the b position = 1

so rate of change = 3 and initial value = 1
6 0
3 years ago
Which two statements about conditional probability are true?
allochka39001 [22]
I believe the answer is C and F.

Hope this helps!
8 0
3 years ago
What is the value of -<br> 3x + 2(y - 1)<br> when x = 4 and y = 3?<br> x + y²<br> Show your work.
nika2105 [10]

Answer:

-8

Step-by-step explanation:

substitute

x=4

       into -3x+2(y-1):

x=3

-3x4+2x(3-1)

-12+2x(3-1)

-12+2x2

-12+4

= -8

4 0
3 years ago
Read 2 more answers
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