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3 years ago

A+5=5a+5 how do i do this problem

Mathematics

1 answer:

Natali5045456 [20]3 years ago

5 0

Answer:

0 = a

Step-by-step explanation:

The first thing to do is subtract 5 from both sides.

a + 5 = 5a + 5

- 5 - 5

The 5's cancel out.

Now we have a + 0 = 5a

You next subtract the a from both sides.

a + 0 = 5a

-a -a

0 = 4a

Lastly would to get a by itself so then we divide 4 from both sides

0 = 4a

_ _

4 4

0 = a

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What is the value of the expression 4 + 8.6?

Veseljchak [2.6K]

Answer:

simple

Step-by-step explanation:

it's

4+8.6

12.6

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3 years ago

A PERT project has 45 activities, 19 of which are on the critical path. The estimated time for the critical path is 120 days. Th

AleksandrR [38]

Answer:

P ( 108 < X < 120 ) = P ( -2 < Z < 0 ) = 0.4773

Option E

Step-by-step explanation:

Given:

- The estimated time for critical path u = 120 days

- The sum of variances along critical path Var = 36

Find:

What is the probability that the project can be completed between days 108 and 120?

Solution:

- The project always takes route of the critical path activities, hecne, we will ignore the activities that are not on critical path.

- We assume that the probability of completion time is normally distributed.

Normal probability distribution has two parameters- average and standard deviation.

- We will assign a random variable X as the number of days to complete activities on critical path. So,

X~ N ( 120 , sqrt(36) )

- We need to find the probability, compute the corresponding Z-scores:

P ( 108 < X < 120 ) = P ( (108 - 120)/ 6 < Z < 0 )

- Use the Z-Tables to look up the required probability:

P ( -2 < Z < 0 ) = 0.4773

Hence,

P ( 108 < X < 120 ) = P ( -2 < Z < 0 ) = 0.4773

6 0

4 years ago

Read 2 more answers

Franky puts £1000 in a bank account for six years with 2.5% rate of interest how much will be in the account at the end of that

yanalaym [24]

Answer:

£1159.69

Step-by-step explanation:

Assuming that the rate of interest is compound interest, you perform the equation:

New amount = Original amount × InterestRate^Number of Years

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New amount = 1159.693418

= £1159.69 (to the nearest penny)

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3 years ago

A class contains 15 female and 9 male students. Find the probability that a student chosen at random is a female, and then a sec

pogonyaev

Answer:

15/24 and 14/24

Step-by-step explanation:

24 being the total of girls over the total of students.

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4 years ago

Read 2 more answers

30 points!!!

AysviL [449]

<h3>Answer: The graph is shown in the attached image below</h3>

-2x means -2*x or "-2 times x" where x is a placeholder for any number you want.

To graph y = -2x, you just need two points. Each point is of the form (x,y)

Let's plug in zero as it is often the easiest to work with.

If x = 0, then -2*x = -2*0 = 0. Notice how I replaced x with 0 and simplified.

Therefore, if x = 0, then y = 0. We have (x,y) = (0,0) as one point on this line. I have marked it as point A in the graph.

Point B is (1, -2) and it is found by plugging x = 1 into the equation to get...

y = -2x

y = -2*1

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You could find other points, but two points is enough to draw a straight line through them. The slope of this line is -2 = -2/1. The y intercept is 0.

6 0

4 years ago