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alexandr1967 [171]
3 years ago
11

The life of automobile voltage regulators has an exponential distribution with a mean life of six years. You purchase an automob

ile that is six years old, with a working voltage regulator and plan to own it for six years. a) What is the probability that the voltage regulator fails during your ownership
Mathematics
1 answer:
jeyben [28]3 years ago
5 0
Um I need help on this question too!!:( hshshshshanja
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Jocelyn is a receptionist at a dentist office. She books 72 appointments each day. Six out of every 18 appointments are cancelle
bixtya [17]

Answer: 24

Step-by-step explanation: So if 6 out of ever 18 appointments are canceled, you need to find out how many “18 appointments” go into 72. So 72 divided by 18 is four. Now if 6 appointments get canceled four times, then it will be 6 times 4, which equals 24.

6 0
3 years ago
Help? Show work!
FinnZ [79.3K]

Answer:

m∠ABC = 68°

m∠DEF = 112°

Step-by-step explanation:

Supplementary angles are angles that add up to 180 degrees (they form a straight line).

If ∠ABC and ∠DEF are supplementary, that means that they add up to 180. We can write this in an equation:

  • (6x + 8) + (12x - 8) = 180

Combine like terms.

  • 18x = 180

Divide both sides by 18.

  • x = 10

Find the measure of each angle by substituting 10 for x into both expressions for the angles.

m∠ABC = (6x + 8)°

  • 6(10) + 8 = 68°

m∠DEF = (12x - 8)°

  • 12(10) - 8 = 112°
5 0
3 years ago
Read 2 more answers
1. On the subway, 8 out of 11 people are
zysi [14]

Answer:

87-88

Step-by-step explanation:

8/11 =72.72\\
700/11 = 87.5\\


4 0
3 years ago
This hyperbola is centered at theorigin. Find its equation.Foci: (-2,0) and (2,0)Vertices: (-1,0) and (1,0)
beks73 [17]

SOLUTION

From the question, the center of the hyperbola is

\begin{gathered} (h,k),\text{ which is } \\ (0,0) \end{gathered}

a is the distance between the center to vertex, which is -1 or 1, and

c is the distance between the center to foci, which is -2 or 2.

b is given as

\begin{gathered} b^2=c^2-a^2 \\ b^2=2^2-1^2 \\ b=\sqrt[]{3} \end{gathered}

But equation of a hyperbola is given as

\frac{(x-h)^2}{a^2}-\frac{(y-k)^2}{b^2}=1

Substituting the values of a, b, h and k, we have

\begin{gathered} \frac{(x-0)^2}{1^2}-\frac{(y-0)^2}{\sqrt[]{3}^2}=1 \\ \frac{x^2}{1}-\frac{y^2}{3}=1 \end{gathered}

Hence the answer is

\frac{x^2}{1}-\frac{y^2}{3}=1

5 0
1 year ago
How do I solve 0.21 divided by 1
Verizon [17]
When multiplying 0.21 by 1, the answer is always the other than 1. Also, this rule applies to any math problem. The correct answer is 0.21.
5 0
4 years ago
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