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4 years ago

If you simplify x • 5x by multiplying like terms, your answer is 5 times x raised to some exponent. What is the exponent of x?

Mathematics

2 answers:

OverLord2011 [107]4 years ago

5 0

X * 5x = 5x^2 (thats an exponent of 2)

enyata [817]4 years ago

4 0

2...............................

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Scores from an exam are normally distributed with a mean of 85 and a standard deviation of 5. Suppose 188 students take the exam

charle [14.2K]

The mean is $\mu=85$ and standard deviation is $\sigma=5$ . Then the variable $X\sim N(85,5)$ .

Use substitution $Z=\dfrac{X-\mu}{\sigma}=\dfrac{X-85}{5}$ , then the variable $Z\sim N(0,1)$ .

The probability $Pr(X>80)$ can be calculated in the following way:

for X=80, $Z=\dfrac{80-85}{5} =-1$ and $Pr(X>80)=Pr(Z>-1)$ . From the diagram $Pr(Z>-1)=0.34+0.34+0.135+0.025=0.84$ .

Conclusion: if 188 students take the exam, then 188·0.84=157.92 (157) would receive a score above 80

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3 years ago

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5(4 - 1) The Second person to answer gets Brainliest

AnnyKZ [126]

Answer:

the answer is 15 because you have to do the problem in the parentheses first then multiply by 5

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2 years ago

(4x1000) + (2x100) + (3x1/10)

disa [49]

(4*1000) + (2*100) + (3*1/10) = 4200.3
(4x1000) + (2x100) + (3x1/10) = 4200.3

Both are equal.

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3 years ago

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PLEASE HELP ME !!!!!

Ierofanga [76]

X = 112

Sorry I had to smoosh the image so it would fit.

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2 years ago

Help me please and i give you points

KatRina [158]

Answer:

30-100

28-100

25-100

7-100

Step-by-step explanation:

It's hard to explain but I try

part in this means how many seeds we can place in those parts

and the whole it he whole amount of the part

hope that make sense

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3 years ago