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coldgirl [10]
2 years ago
10

First responder in under 2 minutes gets brainly

Mathematics
2 answers:
katrin [286]2 years ago
6 0

Answer:

C

Step-by-step explanation:

The x's can not completely cancel each other out so they are still included but you have to divide the numbers, exponents and whole numbers.

mash [69]2 years ago
3 0

Answer:

first one

Step-by-step explanation:

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ACT scores have a mean of 20.8 and 9 percent of the scores are above 28. The scores have a distribution that is approximately no
dimaraw [331]

Answer: 5.37

Step-by-step explanation:

Let x =  ACT scores.

Given: ACT scores have a mean of 20.8 and 9 percent of the scores are above 28. The scores have a distribution that is approximately normal.

i.e. P(X>28)=0.09   (i)

Now,

P(X>28)=P(\dfrac{X-\mu}{\sigma}>\dfrac{28-20.8}{\sigma})\\\\= P(z>\dfrac{7.2}{\sigma})\ \ \ \ [z=\dfrac{X-\mu}{\sigma}]    (ii)

One -tailed z value for p-value of 0.09 =1.3408 [By z-table]

From (i) and (ii)

\dfrac{7.2}{\sigma}=1.3408\\\\\Rightarrow\ \sigma=\dfrac{7.2}{1.3408}\\\\\Rightarrow\ \sigma=5.37

Hence, the standard deviation = 5.37

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2 years ago
Zohar is using scissors to cut a rectangle with a length of 5x – 2 and a width of 3x + 1 out of a larger piece of paper. The per
Tresset [83]
62 is the answer, 2(5(4)-2)+2(3(4)+1)=62
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2 years ago
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What is the simplest form of 1764
vova2212 [387]

Answer:

42

Step-by-step explanation:

Do the math:)

6 0
3 years ago
Pherris is graphing the function f(x) = 2(3)x. He begins with the point (1, 6). Which could be the next point on his graph?
Maurinko [17]

the next point would be (2,18)

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3 years ago
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The container that holds the water for the football team is 1/2 full. after pouring in 9 gallons oo water, it is 4/5 full. how m
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