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Dmitry_Shevchenko [17]
3 years ago
5

HELPP!!! I need help!

Mathematics
2 answers:
kykrilka [37]3 years ago
8 0

Answer: c.

Step-by-step explanation:

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

distribute the negative

x^2 + 2x - 5 - x + 3

combine like terms

x^2 + x - 2

Orlov [11]3 years ago
5 0

Answer:

B

Step-by-step explanation:

You start by Figuring out the answer to each side of the equation by using PEMDAS (parenathes,exponets, mutiplacation, division,addition and subtractoin). then you add your varribles and exponets. Then simplify.

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What is the slope of a trend line that passes through the points (-3, 3) and (18, 26)?
Furkat [3]

Answer:

C) 23/21

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(26-3)/(18-(-3))

m=23/(18+3)

m=23/21

4 0
4 years ago
What is cos(npi/2) and sin(npi/2) in fourier series cos(npi) is (-1)^n and sin(npi)=0 ?
Nat2105 [25]
The problem ask to fourier series of the trigonometric function base on the data you have been given in the problem, so the answer would be cos(pi/2n) = {(-1)^n/2 - if n is even, 0 - if n is odd} and sin(pi/2n) = {0- if n is even, (-1)^(n-1)/2 if n is odd}. I hope you are satisfied with my answer 
4 0
4 years ago
Read 2 more answers
Dana has 8 baseball cards 10 football cards 4 hockey cards and 14 basketball cards all the cards are the same size and shape wha
LUCKY_DIMON [66]
It would be 1/9 chance, or 11%! 

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4 0
3 years ago
Read 2 more answers
PLEASE HELP!!!!!!!!! URGENT!!!
bearhunter [10]

Answer:

a

Step-by-step explanation:

When you multiply the top equation by 3 you would get 6x when you multiply the bottom equation by -2 you would have -6x that way when you combine the equations they would eliminate each other and you would only be left with y as a variable

3 0
3 years ago
Please help with this question!!
DIA [1.3K]

Answer:

x = 8 and y = 18, and the scale factor is 3/2

Step-by-step explanation:

Because we have two complete pairs in the similar trapezoids, we can find the scale factor as 3/2, or 36/24 or 24/16.

To find the missing values of x and y, we just make the equations to get 3x/2 = 12 and 12 * 3/2 = y. This means x = 8 and y = 18.

6 0
4 years ago
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