PLEASE HELP WILL GIVE BRAINLIEST!!!!!!!!

Mathematics

2 answers:

iren2701 [21]3 years ago

6 0

The answer is “c” 0 Bc that is the only thing that makes sense

anygoal [31]3 years ago

5 0

Answer:

the answer is c hope this helps

Step-by-step explanation:

i took the test

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Karen spent 7/10 hour reading and 3/5 hours writing in her journal how much longer did karen spend reading than writing in her j

STatiana [176]

Answer: 1/10

Step-by-step explanation:

From the question, we are informed that Karen spent 7/10 hour reading and 3/5 hours writing in her journal.

To calculate how much longer karen spent reading than writing in her journal, we have to subtract 3/5 from 7/10. This will be:

= 7/10 - 3/5

Note that the lowest common multiple of 5 and 10 is 10.

= 7/10 - 6/10

= 1/10

Therefore, the answer is 1/10

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3 years ago

What would (10x^2+8xy-20)-(2x^2+3xy+5) equal??

SSSSS [86.1K]

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4 years ago

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Free_Kalibri [48]

The answer is 21 or 63/3

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3 years ago

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Empirical rule (statistics)Help please!!!

emmasim [6.3K]

The empirical rule you're referring to is the 68-95-99.7 rule, which asserts that for a normal (bell-shaped) distribution, approximately 68% of the distribution lies within 1 standard deviation of the mean; 95% lies within 2 standard deviations of the mean; and 99.7% lies within 3 standard deviations of the mean.

Let $X$ be the random variable denoting vehicle speeds along this highway. We want to find $P(61$ . To use the rule, we need to rephrase this probability in terms of the mean and standard deviation.

Notice that $61=70-9=70-3\cdot3$ , and $79=70+9=70+3\cdot3$ . In other words, 61 and 79 both lie exactly 3 standard deviations away from the mean, so $P(61$ .