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Sphinxa [80]
3 years ago
8

Can someone please help me

Mathematics
2 answers:
Nat2105 [25]3 years ago
6 0

Answer:

A) x = 94

Step-by-step explanation:

To solve this, you first need to know that the angle of the entire line is a total of 180 degrees.

Using this information, create the equation: (x) + (x - 8) = 180. Combine like terms to get 2x - 8 = 180. Add 8 to both sides to get 2x = 188. Now divide 2 from both sides to get x = 94.

Hope it helps!

Galina-37 [17]3 years ago
3 0

Answer:

C.

Step-by-step explanation:

no problem

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Evaluate the expression. Identify the property used in each step.
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3/4 1/2    =3/5

Step-by-step explanation:

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NEED HELP NOW WILL GIVE BRAINLEIST!!!!!!b) Calculate the area of the red triangle to find the area of the garden. Show your work
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Step-by-step explanation:

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How many pages will you have read after the 6 nights
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Answer:

168 pages

Step-by-step explanation:

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2 years ago
Sixty-three people participated in a study to see if they were left-brain dominant or right-brain dominant. In the study, the pe
fgiga [73]
The two-way table is attached.

We know that 63 people took the survey, and 22 of them were left-handed.  This means that 63-22=41 of them are right handed.

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Of the 26 that are right brain dominant, 21 are right handed; this means 26-21=5 are left handed.

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Let X represent the time it takes from when someone enters the line for a roller coaster until they exit on the other side. Cons
Yuri [45]

Answer:

a. E(x) = 3.730

b. c = 3.8475

c. 0.4308

Step-by-step explanation:

a.

Given

0 x < 3

F(x) = (x-3)/1.13, 3 < x < 4.13

1 x > 4.13

Calculating E(x)

First, we'll calculate the pdf, f(x).

f(x) is the derivative of F(x)

So, if F(x) = (x-3)/1.13

f(x) = F'(x) = 1/1.13, 3 < x < 4.13

E(x) is the integral of xf(x)

xf(x) = x * 1/1.3 = x/1.3

Integrating x/1.3

E(x) = x²/(2*1.13)

E(x) = x²/2.26 , 3 < x < 4.13

E(x) = (4.13²-3²)/2.16

E(x) = 3.730046296296296

E(x) = 3.730 (approximated)

b.

What is the value c such that P(X < c) = 0.75

First, we'll solve F(c)

F(c) = P(x<c)

F(c) = (c-3)/1.13= 0.75

c - 3 = 1.13 * 0.75

c - 3 = 0.8475

c = 3 + 0.8475

c = 3.8475

c.

What is the probability that X falls within 0.28 minutes of its mean?

Here we'll solve for

P(3.73 - 0.28 < X < 3.73 + 0.28)

= F(3.73 + 0.28) - F(3.73 + 0.28)

= 2*0.28/1.3 = 0.430769

= 0.4308 -- Approximated

5 0
3 years ago
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