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2 years ago

Answerrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr

Mathematics

1 answer:

Ulleksa [173]2 years ago

8 0

Answer:

5x²-2x+7+2x²+6x-9
5x²+2x²-2x+6x+7-9
7x²+4x-2

so, 7x²+4x-2 is yr answer.

hope it helps.

<h3>stay safe healthy and happy.</h3>

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My mother pays my brother twice as much allowance as she pays me because he cleans the bathrooms. Together we get $24 each week.

Harman [31]

Answer:

Your brother gets $16 and you get $8.

Step-by-step explanation:

first of all what is 16+8=24

first step..i started from 2 and did twice of that wich is 4 but that only got $6

second step.... just keep doing your multiples....

third step....as soon as i got to the number 8 i did twice of that and i got 16 then i added those and i got $24

and that is your answer.

4 0

3 years ago

What is X? Please help!

vodka [1.7K]

Answer:

Step-by-step explanation:

the sum of the angles in a triangle add up to equal 180

180-73-13=94

8 0

3 years ago

Read 2 more answers

-2/3y-3/4=5 What is the answer i need to show my work please

vodka [1.7K]

Answer:

y= -69/8 (negative 69 over 8)

Step-by-step explanation:

First, you have to simplify both sides of the equation:

$-2/3y+ -3/4 =5$

Second, add 3/4 to both sides:

-2/3y +-3/4 + 3/4=5 +3/4

-2/3y= 23/4

Next, multiply both sides by 3/(-2) (3 over -2)

(3/-2)*(-2/3y)= (3/-2) * (23/4)

y= -69/8

7 0

3 years ago

8.6 + 3.45 = Plz show work

nalin [4]

Answer:
12.05

Reason:
8.6
+3.45
————-
12.05

Don’t forget to carry the one to the left
6+4= 10 carry the one to the left.
8+3+1 = 8+4 =12
Answer 12.05

4 0

2 years ago

Read 2 more answers

A bowl contains 8 chips: 4 blue and 4 red. Three chips are drawn at random and without replacement from a bowl. What is the prob

PIT_PIT [208]

Answer:

the probability that 3 blue chips ( or red chips) are chosen is P(X=3) = 1/14

Step-by-step explanation:

Since the X= choosing x blue chips, then P(X) follows an hypergeometric distribution , when sampling is done without replacement

P(X=x) = (C,x) * (N-C , n-x) /( N ,n)

where ( ) represents combinations then

N= population size = 8 chips

n = sample size = 3 chips

C = number of blue chips = 4 chips

x= number of blue chips that are chosen = 3 blue chips

replacing values

P(X=3) = (4,3) * (8-4 , 3-3) /( 8 ,3) = (4,3) * (4 , 0 ) /( 8 ,3) = 4 * 1 / [ 8!/(3!*5!) ] =

4*3!*5! /8! = 1/14

P(X=3) = 1/14

8 0

3 years ago