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Dominik [7]
3 years ago
13

How to find probability with mean and standard deviation given?

Mathematics
1 answer:
Nuetrik [128]3 years ago
6 0
X is a normal random variable with a mean<span> of 120 and a </span>standard deviation<span> of 20. </span>Determine<span> the </span>probability<span> that X is greater than 135. Problem 3.</span>Find<span> a value of c so that P( -c < Z < c) = .45.</span>
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If r = 9 units and x = 5 units, then what is the volume of the cylinder
GuDViN [60]

Answer:

The answer is volume= 1272

Step-by-step explanation:

volume of a cylinder= pi (3.14)*r^2*h

3.14*9^2*5, 3.14*81*5= 1271.7 when rounded is 1272

5 0
3 years ago
The graph below is the graph of which inequality?
Misha Larkins [42]

Answer:

D

Step-by-step explanation:

\sqrt{x }  \geqslant 1

on your graph x is not equal to 0 starting from one and going to Infinity.

4 0
3 years ago
If cotangent equals four thirds what is the cosecant
lara31 [8.8K]

Answer: 1/3

Step-by-step explanation:

cotangent equals cos/sin. So the sin is 3. And cosecant is 1/sin.  So that means its 1/3.

3 0
3 years ago
Read 2 more answers
The larger of two numbers is twice the smaller increased by five. Find the two numbers if three times the larger exceeds double
irina [24]

The larger number is 13 and smaller number is 4

<em><u>Solution:</u></em>

Let the larger number be "a"

Let the smaller number be "b"

<em><u>Given that larger of two numbers is twice the smaller increased by five</u></em>

larger number = twice the smaller increased by five

larger number = twice the smaller number + 5

a = 2b + 5 --- eqn 1

<em><u>Also given that three times the larger exceeds double the smaller by 31</u></em>

Here "exceeds" denotes addition and "times" denotes multiplication

"double" denotes being multiplied by 2

three times the larger number = double the smaller number + 31

3a = 2b + 31 ---- eqn 2

<em><u>Let us solve eqn 1 and eqn 2 to find values of "a" and "b"</u></em>

Substitute eqn 1 in eqn 2

3(2b + 5) = 2b + 31

6b + 15 = 2b + 31

6b - 2b = 31 - 15

4b = 16

<h3>b = 4</h3>

From eqn 1,

a = 2b + 5

a = 2(4) + 5

a = 8 + 5

<h3>a = 13</h3>

Thus the larger number is 13 and smaller number is 4

5 0
3 years ago
Averi was trying to factor 4x2 + 20x - 16. She found
hichkok12 [17]

Answer:

The width will be x^{2} +5x-4

Step-by-step explanation:

Thinking process:

Let the model be:

4x^{2} +20x-16

factoring out 4 gives:

4(x^{2} +5x-4)

Factorizing the expression in the parentheses gives:

4(x^{2} +5x-4)

Therefore, since the expression in the parentheses cannot be factorized further, the expression is:

length = 4 units\\width = x^{2} +5x-4

7 0
3 years ago
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