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3 years ago

PLEASE HELP I WILL GIVE BRAINLIEST TO BEST ANSWER WITH STEP BY STEP DIRECTIONS!!!!

Mathematics

2 answers:

kipiarov [429]3 years ago

7 0

V=12
Equation: v=-3(-1-3)

V=-3(-4)
V=12

kobusy [5.1K]3 years ago

6 0

v = 3 (r - 1)

v = 3(- 1 - 3) ---- substititing

v = -3 - 9 ----- solved the parenthesis

v = -12 ----- -3 -9 = -12

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I AM BEGGING, PLEASE HELP ME. CAN SOMEONE PLEASE HELP ME!

Temka [501]

Answer:

37.5

Step-by-step explanation:

180-75 = 105

180 is the sum of all the angle in a triangle

180-105 = 75

75/2 = x becuz the triangle is icoceles

=37/5

Hope this helps :) Giving me brainiest would help a lot :))

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3 years ago

A dartboard has 8 equally sized slices numbered from 1 to 8. Some are grey and some are white, as shown below.

Anna [14]

✨Answer:

✨:P (X) is 7/10P(not X) is 3/10 The total is 10 so that's ur denominator The probability of landing on a grey area is 7/10✨

Step-by-step explanation:✨

✨~hope this helps~✨

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3 years ago

Please help! Will give the brainiest!!

Eduardwww [97]

Answer:

1. SSS; Triangle ABC is congruent to Triangle DEF; sorry there's no triangle symbol on here.

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Step-by-step explanation:

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3 years ago

Which represents the volume of the cylinder, in cubic units? 120π 130π 300π 325π

IrinaVladis [17]

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3 years ago

Read 2 more answers

Suppose that lithium calculator battery with a charge of 3 volts, actually has a voltage with uniform distribution between 2.93

Dmitrij [34]

Answer:

b. E(X) = 3.015, STDEV(X)= 0.049, P (X ≤ 2.98) = 0.2941

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The mean of the uniform probability distribution is:

$M = \frac{a + b}{2}$

The standard deviation of the uniform distribution is:

$S = \sqrt{\frac{(b-a)^{2}}{12}}$

The probability that we find a value X lower than x is given by the following formula.

$P(X \leq x) = \frac{x - a}{b-a}$

Uniform distribution between 2.93 and 3.1 volts

This means that $a = 2.93, b = 3.1$ . So

Mean:

$M = \frac{2.93 + 3.1}{2} = 3.015$

Standard deviation:

$S = \sqrt{\frac{(3.1 - 2.93)^{2}}{12}} = 0.049$

What is the probability that a battery has a voltage less than 2.98?

$P(X \leq 2.98) = \frac{2.98 - 2.93}{3.1 - 2.93} = 0.2941$

So the correct answer is:

b. E(X) = 3.015, STDEV(X)= 0.049, P (X ≤ 2.98) = 0.2941

6 0

3 years ago