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3 years ago

A number to the 12th power divided by the same number to the 9th power equals 64 what is the number

Mathematics

1 answer:

Bess [88]3 years ago

8 0

Answer:

The statement written as a formula is. a12a9=125. We can simplify the fraction, and we have. a3=125. To solve for a , take the third root

Step-by-step explanation:

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Will give brainliest, if its correct

Paul [167]

Answer:

C) -1

Step-by-step explanation:

(ax+3)²=36

Square root both sides

ax+3=6

Subtract 3 from both sides

ax=3

Put x in

-3a=3

a= -1

C) -1 would work.

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3 years ago

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shepuryov [24]

Answer:

5.) b = -2/5 (or -0.4 in decimal form)

6.) 20.5

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3 years ago

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Which of the following would cause an increase in heat? freezing compression stirring friction

mojhsa [17]

Answer: Your answer would be friction.

Step-by-step explanation:

Friction produces heat because it causes the molecules on rubbing surfaces to move faster and develop more energy.

Hope this helps!

8 0

3 years ago

Someone please help me

True [87]

Answer: 20 = right triangle 21 = acute 22 = obtuse

Step-by-step explanation:

20 - Because there is a right angle/ 90 degree angle

21 - Because all the angles are less that 90 degrees which makes them acute.

22 - Because all the angles are more than 90 which makes them obtuse.

3 0

3 years ago

An engineering study indicates that 8.5% of the bridges in a large state are structurally deficient. The state's department of t

Wewaii [24]

Answer:

$P(X=6)=(100C6)(0.085)^6 (1-0.085)^{100-6}=0.1063$

Then the probability that exactly 6 bridges in the sample are structurally deficient is 0.1063 or 10.63%

Step-by-step explanation:

Let X the random variable of interest "number of bridges in the sample are structurally deficient", on this case we now that:

$X \sim Binom(n=100, p=0.085)$

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

And we want to find this probability:

$P(X=6)$

And if we use the probability mass function and we replace we got:

$P(X=6)=(100C6)(0.085)^6 (1-0.085)^{100-6}=0.1063$

Then the probability that exactly 6 bridges in the sample are structurally deficient is 0.1063 or 10.63%

8 0

3 years ago