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Over [174]
4 years ago
13

A system of equations is shown below: Equation A: 4c = d – 8 Equation B: c = 5d + 8 Which of the following steps should be perfo

rmed to eliminate variable d first?
a. Multiply equation B by 4.
b. Multiply equation A by –5.
c. Multiply equation A by 4.
d. Multiply equation B by 5.
Mathematics
2 answers:
ozzi4 years ago
8 0
You would want to multiply equation a by -5 so you can eliminate by addition
Doss [256]4 years ago
6 0
B is the correct answer... Hope I'd helped!
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Answer:

a. P(X=50)= 0.36

b. P(X≤75) =  0.9

c. P(X>50)=  0.48

d. P(X<100) = 0.9

Step-by-step explanation:

The given data is

x                      25        50       75        100          Total

P(x)                0.16       0.36    0.38    0.10          1.00

Where X is the variable and P(X) = probabililty of that variable.

From the above

a. P(X=50)= 0.36

We add the probabilities of the variable below and equal to 75

b. P(X≤75) = 0.16+ 0.36+ 0.38= 0.9

We find the probability of the variable greater than 50 and add it.

c. P(X>50)= 0.38+0.10=  0.48

It can be calculated in two ways. One is to subtract the probability of 100 from total probability of 1. And the other is to add the probabilities of all the variables less than 100 . Both would give the same answer.

d. P(X<100)= 1- P(X=100)= 1-0.1= 0.9

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A Bag contains eight titles labeled A,B,C,D,E,F,G, and H. One title will be randomly picked. What is the probability of picking
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Answer:

1/6

Step-by-step explanation:

A and E are vowels so you minus it by 8, which makes it 6.

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3 years ago
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