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kirza4 [7]
2 years ago
8

3. Find the rate of change in the represented table.

Mathematics
1 answer:
kramer2 years ago
7 0
<h3>Answer:   14</h3>

Explanation:

Pick two columns from the table to form the (x,y) points.

I'll pick the last two columns, since everything is positive here. So we have the points (2, 17) and (4, 45)

Apply the slope formula to those points

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

m = (45 - 17)/(4 - 2)

m = (28)/(2)

m = 14

The rate of change is 14.

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Tasya [4]

Answer:

21) x=1, y=-1, z=2 and 23) x=3, y=-1, z=-1

Step-by-step explanation:

there are 3 equations in 21)

1) x+y-z=-2

2)2x-y+z=5

3)-x+2y+2z=1

solve for x by adding equation 2) and 1)

2)2x-y+z=5 +  1) x+y-z=-2   = 3x=3, then divide by 3 and x=1

solve for z by adding equation 1) and 3)

1) x+y-z=-2 + 3)-x+2y+2z=1

we then get a new equation, 4), by isolating z

3y+z=-1 which is 4) z=-1-3y

substitute our new equation, 4) z=-1-3y, and x=1 into equation 1) to get y

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

isolate y to get y=-1

then substitute y=-1 into equation 4) to get z=2

check by substituting x=1, y=-1, and z=2 into all 3 equations

there are 3 equations

1)x+3y=0

2)x+y+z=1

3)3x-y-z=11

add equation 3) and 2) together to get x

3)3x-y-z=11 + 2)x+y+z=1

4x=12, x=3

substitute x=3 into equation 1) (3)+ 3y=0 to get y

3y=-3, y=-1

substitute x=3 and y=-1 into equation 2) to get z

(3)+(-1)+z=1,  z=-1

4 0
3 years ago
Which equation has the solution x = 3?
miss Akunina [59]

Answer:

9-3x=0

Step-by-step explanation:

Add 3x to both sides

9=3x

divide both sides by 3

3=x

x=3

3 0
2 years ago
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Please help me is for my homework​
masya89 [10]

Answer:

35/100 if I remembered correctly, XD

7 0
3 years ago
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How do you find out if a ratio is equivalent
Keith_Richards [23]
One way is to turn them into fractions and simplify them then see if they are equal exg
8:4 and 6:3
turn into fractions
8/4 and 6/3
2/1 and 2/1
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7 0
3 years ago
a machine paints 340 toy boats in 45 minutes. Which expression equals the unit rate per hour? A: 3/4/340. B: 45/350 C: 340/3/4 D
monitta

340 in 0.75 hours. Divide both sides by 0.75, therefore 340/0.75 in 0.75/0.75 hour.
So 453.33 in one hour.(453.33 units per hour)

Hope it helps! :D

6 0
3 years ago
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