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3 years ago

PLEASEEEEEEEEEEE HELPPPPPPPPP WITH THISSSSSSSSS

Mathematics

1 answer:

ivanzaharov [21]3 years ago

7 0

Answer:

P = 10x + 2

Step-by-step explanation:

Formula to find perimeter:

P = 2(l + w)

P = 2(4x + 1 + x)

P = 2(5x + 1)

P = 10x + 2

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(x+3)^2+5=-28

Sidana [21]

Answer:

Description

Step-by-step explanation:

a. 2 solutions

b. 2 imaginary solutions

c. If the discriminant is positive, then it will have 2 real solutions as the square root of a positive number always equals a positive number. If the discriminant is negative, the quadratic equation will have 2 imaginary solutions, as the square root of a negative number is always imaginary. If the discriminant equals 0, it will have only 1 real solution.

3 0

3 years ago

Mallory needs to go to the airport. It takes her 120 minutes to get there by car. This is 3 times the time it takes by

seraphim [82]

It will take Mallory 40 minutes to get to the airport by train.

Step-by-step explanation:

Given,

Time taken by car = 120 minutes

Time taken by train = t

According to given statement;

Time taken by car = 3 times time taken by train

$120=3t$

Dividing both sides by 3

$\frac{120}{3}=\frac{3t}{3}\\40=t\\t=40$

It will take Mallory 40 minutes to get to the airport by train.

Keywords: division, multiplication

Learn more about division at:

#LearnwithBrainly

6 0

3 years ago

Sarah rides her bike three days a week. She rides for 10 minutes a day. How many minutes does Sarah spend riding her bike after

liubo4ka [24]

Answer:

1 hour after 2 weeks

Step-by-step explanation:

She rides 3 days a week, and 10 minutes a day. Multiplying 3 and 10 gets you 30 minutes a week. Over a 2 week period, that is 60 minutes (1 hour)

7 0

3 years ago

Read 2 more answers

Emma buys a game for $26.84. She pays for the game with a $20 bill and two $5 bills.

Rina8888 [55]

3 one dollar bills
One dime
6 pennies

8 0

3 years ago

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