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OlgaM077 [116]
3 years ago
15

What should i put down for my index card for algebra 2 midterm

Mathematics
2 answers:
BabaBlast [244]3 years ago
6 0
Nd xindisnisnd I did I dhe I’d do did I’d didnidnid didb dubs dB did I. Js Jax
antoniya [11.8K]3 years ago
3 0
I don’t know but I wish the best of luck to you
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Find the slope of the line through each pair of points.<br> (2, -4), (5,-8)
slega [8]

Answer:

m=-\frac{4}{3}

Step-by-step explanation:

Slope=m=\frac{y_2-y_1}{x_2-x_1}

Here

(x_1, y_1)=(2, -4) \ \ and \ \  (x_2, y_2)=(5, -8)

m=\frac{-8-(-4)}{5-2}

m=-\frac{4}{3}

8 0
3 years ago
I'd really appreciate some help on these questions, I'm really struggling
nikklg [1K]
We can use linear combinations of the equations to eliminate variables.

3x - 4y = 1
-2x + 3y = 1

To eliminate y we'll make the linear combination of 3 times the first equation minus four times the second. 

9x - 12y = 3
-8x + 12y = 4

Adding,
x = 7

We could solve for y directly but let's use another linear combination, twice the first plus three times the second:

2(3x - 4y) + 3(-2x + 3y)= 2(1)+3(1)

y = 5

Check: 3(7)-4(5)=1 good.   -2(7)+3(5)=1 good.

Q18 Answer: (7,5)

y = -3x + 5
5x - 4y = -3

4y +1(5x - 4y) = 4(-3x + 5) + 1(-3)

5x = -12x + 20 -3

17 x = 17

x = 1
y = -3(1) + 5 = 2
Check: 5(1) - 4(2) = -3 good

Q19 Answer (1,2)

6x + 5y = 25
x = 2y + 24
6x = 12y + 144
5y = 25 - 12y - 144
17y = -119
y = -119/17= -7
x = 2y+24= 10
Check: 6(10)+5(-7)=25 good   2y+24=2(-7)+24=10=x good

Q20 Answer (10,-7)


3x + y = 18
-7x + 3y = -10
9x  + 3y = 54
9x - -7x = 54 - -10
16x = 64
x=4
y = 18 -3x = 18-12=6

Check: 3(4)+6=18 good,  -7(4)+3(6)=-10 good

Q21 Answer: (4,6)

6 0
3 years ago
Solve for x: 5x + 2 = 4x - 9.
AlekseyPX

Answer:

Step-by-step explanation:

5x + 2 = 4x - 9

Collecting like terms

5x - 4x = -9 - 2

x = -11

4 0
3 years ago
Read 2 more answers
Help please, answer number 1.
gayaneshka [121]

Answer:

mmmm cnt get to it srry

Step-by-step explanation:

8 0
3 years ago
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Francisco is building a window seat below a bay window in the shape of an isosceles trapezoid. His blueprint for the window seat
Lera25 [3.4K]

Answer:

A

Step-by-step explanation:

I think it is a because if you mutiply and you will get your answer

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3 years ago
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