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2 years ago

Please, help me with at least one of them. I don’t understand, please.

Mathematics

1 answer:

zimovet [89]2 years ago

3 0

Answer:

F shouldn't be that hard

Step-by-step explanation:

Come on man u got this

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If you have a decimal answer, round to the nearest tenth!<br> 2/3c−4=8

Alenkasestr [34]

Answer:

= 18

Step-by-step explanation:

7 0

2 years ago

Common factor and HCF of 10m squared,15mk

Anton [14]

Answer:

Step-by-step explanation:

10m^2 and 15mk

common factor is 5m

HCF is 5m

5 0

3 years ago

Giving a test to a group of students, the grades and gender are summarized below

FrozenT [24]

The probability that the student chosen at random is not a male that had a A grade is 0.85.

<h3>What is the probability?</h3>

Probability determines the odds that an event would happen. The probability the event occurs is 1 and the probability that the event does not occur is 0.

The probability = (number of students - males who had a A grade) / total number of students

(59 - 9) / 59 = 50 / 59 = 0.85

To learn more about probability, please check: brainly.com/question/13234031

#SPJ1

3 0

2 years ago

The national average for the math portion of the College Board’s Scholastic Aptitude Test

Alex73 [517]

Answer:

a) 0.1587

b) 0.023

c) 0.341

d) 0.818

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 515

Standard Deviation, σ = 100

We are given that the distribution of SAT score is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(score greater than 615)

P(x > 615)

$P( x > 615) = P( z > \displaystyle\frac{615 - 515}{100}) = P(z > 1)$

$= 1 - P(z \leq 1)$

Calculation the value from standard normal z table, we have,

$P(x > 615) = 1 - 0.8413 = 0.1587 = 15.87\%$

b) b) P(score greater than 715)

$P(x > 715) = P(z > \displaystyle\frac{715-515}{100}) = P(z > 2)\\\\P( z > 2) = 1 - P(z \leq 2)$

Calculating the value from the standard normal table we have,

$1 - 0.977 = 0.023 = 2.3\%\\P( x > 715) = 2.3\%$

c) P(score between 415 and 515)

$P(415 \leq x \leq 515) = P(\displaystyle\frac{415 - 515}{100} \leq z \leq \displaystyle\frac{515-515}{100}) = P(-1 \leq z \leq 0)\\\\= P(z \leq 0) - P(z < -1)\\= 0.500 - 0.159 = 0.341 = 34.1\%$

$P(415 \leq x \leq 515) = 34.1\%$

d) P(score between 315 and 615)

$P(315 \leq x \leq 615) = P(\displaystyle\frac{315 - 515}{100} \leq z \leq \displaystyle\frac{615-515}{100}) = P(-2 \leq z \leq 1)\\\\= P(z \leq 1) - P(z < -2)\\= 0.841 - 0.023 = 0.818 = 81.8\%$

$P(315 \leq x \leq 615) = 81.8\%$

4 0

3 years ago

A juice can is in the shape of a cylinder with a diameter of 4 inches. It has a volume of 125 cubic inches. What is the height o

ludmilkaskok [199]

We know that
[volume of a cylinder]=pi*r²*h------> h=volume/[pi*r²]
diameter=4 in
r=4/2---> r=2 in
Volume =125 in³

h=125/[pi*2²]-----> h=9.95 in

the answer is
the height of the can is 9.95 in

6 0

3 years ago