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netineya [11]
3 years ago
15

oy is training for a triathlon. She runs a distance of 2x miles, cycles a distance of (x2 + 7) miles, and swims a distance of (x

− 2) miles. Which simplified expression is equivalent to the total distance, in miles, Joy covers?
Mathematics
1 answer:
Evgesh-ka [11]3 years ago
7 0
Add
2x+x²+7+x-2
x²+3x+5 is the distance
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Caroline has 16 marbles 1\8 of them are blue how many of Caroline's marbles are blue
seropon [69]
2 of them is blue because since there is 16 marbles you multiply 1/8 by 2 and 2/16 so 2 marbles are blue 
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Imagine the average time to complete a 4-year bachelor degree is actually 4.7 years, based on national data. You collect data on
rusak2 [61]

Answer:

-0.67

Step-by-step explanation:

Given that :

Population mean, μ = 4.7

Sample size, n = 68

Sample mean, M = 4.3

Sample standard deviation, s = 0.6

The effect size, d can be obtained using the relation :

d = (M - μ) / s

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8 0
3 years ago
Is 25,365 cm greater or less than 30 m
anyanavicka [17]
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6 0
3 years ago
1.
Law Incorporation [45]

Answer:

the gradient is 3

y- intercept is 4

Step-by-step explanation:

when you're asked the gradient, you can find it as a coefficient of"x" in equation where the coefficient of "y" is one.

y=mx+b

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6 0
4 years ago
Which of the following statements is not​ true? A. If the probability of an event occurring is​ 0, then it is impossible for tha
FromTheMoon [43]

Answer:

C. If the probability of an event occurring is​ 1.5, then it is certain that the event will occur.

Step-by-step explanation:

Probability is a value between <em>0 and 1</em> (including both values). Thus, to say that there is a probability of 1.5 is not correct, and, therefore, this statement is not true.

We can rewrite the statement as "If the probability of an event occurring is 1, then it is completely certain that the event will occur."

Statement A.

Suppose the event is A. Then, if P(A) = 0, it is completely certain that the event will not occur. It is true.

Statement B.

\\ if P(A) = 0\;then\;P(\overline{A}) = 1 - 0 = 1. Then, the statement is true.

Statement C.

We already explained the <em>statement C is not true</em> because the values for probabilities are between 0 and 1 (including both values). A probability of 1.5 is meaningless as a result.

Statement D.

For the same reason explained in C, the probability can never be a negative value. So, this statement is also true.  

4 0
3 years ago
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