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hodyreva [135]
3 years ago
13

Which shape has opposite sides that are both equal in length and parallel and always has four right angles? A. triangle B. recta

ngle C. pentagon D. parallelogram
Mathematics
1 answer:
ra1l [238]3 years ago
8 0
I think its b
hope this helps
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The weights of the fish in a certain lake are normally distributed with a mean of 12 lb and a standard deviation of 12. If 16 fi
erastova [34]

Answer:

If 4 fish are randomly selected, what is the probability that the mean weight will be between 9.6 and 15.6 lb? Round your answer to four decimal places.

6 0
3 years ago
What is the square root of m^6?
Nastasia [14]
Answer:
If m is nonnegative (ie not allowed to be negative), then the answer is m^3
If m is allowed to be negative, then the answer is either |m^3| or |m|^3

==============================

Explanation:

There are two ways to get this answer. The quickest is to simply divide the exponent 6 by 2 to get 6/2 = 3. This value of 3 is the final exponent over the base m. Why do we divide by 2? Because the square root is the same as having an exponent of 1/2 = 0.5, so
sqrt(m^6) = (m^6)^(1/2) = m^(6*1/2) = m^(6/2) = m^3
This assumes that m is nonnegative. 

---------------------------

A slightly longer method is to break up the square root into factors of m^2 each and then apply the rule that sqrt(x^2) = x, where x is nonnegative

sqrt(m^6) = sqrt(m^2*m^2*m^2)
sqrt(m^6) = sqrt(m^2)*sqrt(m^2)*sqrt(m^2)
sqrt(m^6) = m*m*m
sqrt(m^6) = m^3
where m is nonnegative

------------------------------

If we allow m to be negative, then the final result would be either |m^3| or |m|^3. 

The reason for the absolute value is to ensure that the expression m^3 is nonnegative. Keep in mind that m^6 is always nonnegative, so sqrt(m^6) is also always nonnegative. In order for sqrt(m^6) = m^3 to be true, the right side must be nonnegative.

Example: Let's say m = -2
m^6 = (-2)^6 = 64
sqrt(m^6) = sqrt(64) = 8
m^3 = (-2)^3 = -8
Without the absolute value, sqrt(m^6) = m^3 is false when m = -2

4 0
3 years ago
Fill in the blank.<br><br> 7.95x10^7 = [ ? ]x 10^6
skelet666 [1.2K]

Answer:

79.5

Step-by-step explanation:

10^7 = 10^6 * 10

then 10*7.95 = 79.5

7 0
3 years ago
Solve the equation.<br> d divided by 3 = 139<br> d =<br><br> (Type a whole number.)
wolverine [178]

Answer:

417

Step-by-step explanation:

HOPE THAT HELPED

7 0
3 years ago
Read 2 more answers
Which fraction is equal to 0.3 A. 3/10 B. 1/30 C. 1/3 D. 1/100 I'm bad at fractions!
zalisa [80]
The answer is A. 3/10
8 0
3 years ago
Read 2 more answers
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