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3 years ago

H e l ppppppppppp

Mathematics

2 answers:

son4ous [18]3 years ago

7 0

Answer:

Step-by-step explanation:

Vikentia [17]3 years ago

3 0

Answer:

(Please vote me Brainliest if this helped!)

Letter A

Step-by-step explanation:

Pythagorean Triples $c^2=a^2+b^2$

A) Not a Pythagorean Triple

$40^2=12^2+35^2$ : 1,600 ≠ 144 + 1,225

B) Pythagorean Triple

$53^{2} = 28^{2} + 45^{2} :$ 2,809 = 784 + 2,025

C) Pythagorean Triple

$65^2= 33^2+56^2$ : 4,225 = 1,089 + 3,136

D) Pythagorean Triple

$85^{2} = 36^{2} + 77^{2}$ : 7,225 = 1,296 + 5,929

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Assume that adults have IQ scores that are normally distributed with a mean of 96.296.2 and a standard deviation 20.520.5. Find

Sergeeva-Olga [200]

Answer:

The first quartile of the IQ scores of adults is 82.26.

Step-by-step explanation:

The first quartile is the value that is greater than 25% of the observations and less than 75% of the observation.

The formula to compute the first quartile (Q₁) of a Normal distribution is:

$Q_{1}=\mu-0.68\sigma$

The mean and standard deviation of the IQ scores of adults are:

$\mu=96.2\\\sigma=20.5$

Compute the first quartile value as follows:

$Q_{1}=\mu-0.68\sigma=96.2-(0.68\times20.5)=82.26$

Thus, the first quartile of the IQ scores of adults is 82.26.

5 0

3 years ago

Which lines have slope -4/5 and contain point (0,1)?

Oksanka [162]

I believe it was BC, to find that answer, you simply find the point (0,1) where 0 is x and y is 1. There were two lines which made me not think twice but since it is negative, the lines should be going to the left side rather than the right. So the slope which is y over x of -4/5, to find that, you count up 4 and over 5

6 0

3 years ago

Please help me find the area

Radda [10]

Answer:

$8x^{2} +14x+6$