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3 years ago

Can someone plz help with math?!

Mathematics

1 answer:

Flura [38]3 years ago

5 0

Answer:

1. <em>L = 3D +59</em>

2. 158 miles

Step-by-step explanation:

For the second part:

Since each day 3 miles of the road is being added, we can simply multiply the number 33 by 3, getting 99. If the road started with 59 miles, we need to add 59 to 99, getting 158 miles.

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Write the standard form of the equation of the line described

tiny-mole [99]

Hello!

First you have to find what y is at when x is -3 in the first equation

y = 5/3(-3) + 2

y = -3

A point of the original line is (-3, -3)

The line we want has to go up 2

To do this we add 2 to the y-intercept part of the equation

y = ? + 2 + 2

Since the line is parallel it has the same slope

y = 5/3x + 2 + 2

Simplify

The answer is y = 5/3 x + 4

Hope this helps!

8 0

4 years ago

A computer consulting firm presently has bids out on three projects. Let Ai = {awarded project i}, for i = 1, 2, 3, and suppose

Karo-lina-s [1.5K]

Step-by-step explanation:

The data below is what was provided in the question and it is what I solved the question with

P(A1) = 0.23

P(A2) = 0.25

P(A3) = 0.29

P(A1 n A2 ) = 0.09

P(A1 n A3) = 0.11

P(A2 n A3) = 0.07

P(A1 n A2 n A3) = 0.02

P(A2|A1) = P(A1 n A2)/P(A1)

= 0.09/0.23

= 0.3913

We have 39.13% confidence that event A2 will occur given that event A1 already occured

b.)

P(A3 n A3|A1) = P(A2 n A3)n A1)/P(A1)

= 0.02/0.23

= 0.08695

We have about 8.7% chance of events A2 and A3 occuring given that A1 already occured.

P(A2 u A3|A1)

= P(A1 n A2)u(A1 n A3)/P(A1)

= P( A1 n A2) + P(A1 n A3) - P(A1 n A2 n A3) / P(A1)

= (0.09+0.11-0.02)/0.23

= 0.18/0.23

= 0.7826

We have 78.26% chance of A2 or A3 happening given that A1 has already occured.

6 0

3 years ago

HELP plz 20 pionts PLZ HELP me PLZ HELP me

k0ka [10]

A) every 50 students is 1 representative, so:

r = (a+b+c+d+e)/50

b) (1587 + 985 + 2052 + 824 + 752)/50 = 6200/50 = 124 representatives.

Our answer makes sense since for every representative, there are 50 students. And 50*124 = 6200 total students.

4 0

3 years ago

Read 2 more answers

Simplify each expression -4b+2b

I am Lyosha [343]

Answer:

-2b

Step-by-step explanation:

−4b+2b

=−4b+2b

=−b+−b+−b+−b+b+b

=−b−b

=−2b

4 0

3 years ago

Read 2 more answers

Suppose that there is a white urn containing two white balls and three red balls and there is a red urn containing two white bal

Svetradugi [14.3K]

Answer:

The probability that the second ball is red is 11/25

Step-by-step explanation:

Since the white urn contains 2 white balls and 3 red balls.

We have a total of 5 balls in this urn. The red urn contains 2 white balls and 3 red balls. We have a total of 5 balls likewise.

There are two ways of selecting red balls as the second.

1. Selecting white first, then selecting red

2. Selecting red first, then selecting red again.

IN THE EVENT OF SELECTING THE FIRST BALL

- The probability of selecting white ball is P(W) = 2/5

- Probability of selecting red ball is P(R) = 3/5

IN THE EVENT OF SELECTING THE SECOND BALL

P(R|W) = 1/2

P(R|R) = 3/5

So the probability of selecting a red ball as the second is

P(R2) = P(R|W)P(W) + P(R|R)P(R)

= (1/2)(2/5) + (2/5)(3/5)

= 1/5 + 6/25

= 11/25

3 0

3 years ago