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olchik [2.2K]
4 years ago
8

Help would really be appreciated with this one!

Mathematics
1 answer:
Marta_Voda [28]4 years ago
4 0
Point slope is nicer
y-y1=m(x-x1)
goes through the point (x1,y1) and has a slope of m

slope itnercept
y=mx+b
m=slope
b=y intercept




first find slope
slope between 2 points (x1,y1) and (x2,y2) is (y2-y1)/(x2-x1)
given
(7,82) and (4,18)
slope=(18-82)/(4-7)=-64/-3=64/3


point slope
point is (7,82) or you can do (4,18)
I'll do both
y-82=(64/3)(x-7) or
y-18=(64/3)(x-4)
those both work



slope intercept
slope is 64/3
y=64/3x+b
find b
input a point
(4,18)
18=64/3(4)+b
18=256/3+b
minus 256/3 from both sides
note: 18=54/3
-202/3=b
y=64/3x-202/3 is equation in slpe intercept
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Simplify (3x2 − 2) + (5x2 + 5x − 1). (2 points)
olga55 [171]

Answer:

D

Step-by-step explanation:

well the anser has to equal 9 if you solved the question correctly BUT the other questions have to equal 9 so the first one is like this

(3*2-2)+(5*2+5*-1)



= (6-2)+(5*2+5*-1)



= (4)+(5*2+5*-1)



= 4+(5*2+5*-1)



= 4+(10+5*-1)



= 4+(10+-5)



= 4+(10-5)



= 4+(5)



= 4+5



= 9

Now the answers A is not it because

8*2+5*-3



= 16+5*-3



= 16+-15



= 16-15



= 1

B isnt it because

8*2+5*-1



= 16+5*-1



= 16+-5



= 16-5



= 11

And C isnt it because

2*2+5*-3



= 4+5*-3



= 4+-15



= 4-15



= -11

So that leaves D and this is how it is correct

= 8*2+7*-1



= 16+7*-1



= 16+-7



= 16-7



= 9


Hope this helps! Sorry I took so long

8 0
3 years ago
2. What are all the possible rational roots of the polynomial P(x) = 5* + 2003 + 2x2 +4?
Crank

Step-by-step explanation:

Since all coefficients are integers, we can apply the rational zeros theorem.

The trailing coefficient (the coefficient of the constant term) is 7" role="presentation" style="margin: 0px; padding: 0px; box-sizing: border-box; font-style: normal; font-variant: inherit; font-weight: normal; font-stretch: inherit; font-size: 16px; line-height: normal; font-family: inherit; display: inline; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;">77.

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These are the possible values for p" role="presentation" style="margin: 0px; padding: 0px; box-sizing: border-box; font-style: normal; font-variant: inherit; font-weight: normal; font-stretch: inherit; font-size: 16px; line-height: normal; font-family: inherit; display: inline; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;">pp.

The leading coefficient (the coefficient of the term with the highest degree) is 2" role="presentation" style="margin: 0px; padding: 0px; box-sizing: border-box; font-style: normal; font-variant: inherit; font-weight: normal; font-stretch: inherit; font-size: 16px; line-height: normal; font-family: inherit; display: inline; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal;

7 0
2 years ago
The Movie House gives away a $5 coupon for every 4 movies purchased.How many movies would you have to purchase in all before rec
Daniel [21]

Answer:

5 movies because for 4 movies equals a coupon

3 0
3 years ago
Is 8 4/9 a rational number
Brut [27]

Answer:

8 4/9 is rational

It is rational because I dont know why but I just know its rational

5 0
3 years ago
Read 2 more answers
Solve the system of equations by first multiplying.
skad [1K]

3x+y=-5

12x+5y=27

Let y =-5-3x

Insert y into equ.2

12x+5(-5-3x)=27

12x-25-15x=27 den rearrange

-3x=2 den x =-2/3

Den put xinto equ 1

3(-2/3)+y=5

-2+y=5(collect like terms)

Y =7

5 0
3 years ago
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