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3 years ago

10

Does there exist a function that is not a relation

1 answer:

Setler79 [48]3 years ago

4 0

No, a function is always a relation. A relation may not always a function but the vice versa is true.

It's like the relationship between a rectangle and a square. A rectangle has 4 right angles and 2 sets of congruent sides while a square has 4 right angles and all sides are congruent. Which means that a rectangle is a square, but a square may not always be a rectangle.

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A plane is an undefined term because it

igor_vitrenko [27]

No on can explain it but it has a definition.

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3 years ago

Factor by grouping <br> 3x^2 + 11 - 14 <br><br><br><br> plss i need help!

8_murik_8 [283]

Answer:

3x^{2}+11-14 hi

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 122 and standard deviation of 22

marin [14]

Answer: 4.27% of adults in the USA have stage 2 high blood pressure.

Step-by-step explanation:

Let x be a random variable that denotes a person with high blood pressure .

Given: Average blood pressure: $\mu=122$

Standard deviation: $\sigma=22$

Someone qualifies as having Stage 2 high blood pressure if their systolic blood pressure is 160 or higher.

The probability that an adult in the USA have stage 2 high blood pressure:

$P(x\geq160)=P(\dfrac{x-\mu}{\sigma}}\geq\dfrac{160-122}{22})\\\\=P(z\geq1.72)\ \ \ [z=\dfrac{x-\mu}{\sigma}]\\\\=1-P(z$

Hence, 4.27% of adults in the USA have stage 2 high blood pressure.

6 0

2 years ago

How do I find a percent of a number?

ddd [48]

You can take 0.48 as a number, multiply by 100 to that and you get 48%

3 0

3 years ago

Leon bought 50 backpacks at a sporting store. 20% of the backpacks were pink and 1/2 of the backpacks were blue. How many of the

My name is Ann [436]

20% of 50 is 10

Half of 50 is 25

25 + 10 = 35

50 -35 = 15

15 of the backpacks were neither pink or blue

Hope this helps :)

5 0

3 years ago