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Vikki [24]
3 years ago
15

How do you find the rate of change

Mathematics
1 answer:
olga_2 [115]3 years ago
6 0
If it's for a graph then I believe you just find the slope which you can do by taking two points and plugging them into this equation y-y
/
X-X

Example: (2, 4) and (6, 7) the first number is always x and the second is always y so if you plug those in the equation would look like this....

4-7
/
2-6

That would end up being
3
- ---- aka the rate of change
4


P.s. The slash and the four dotted lines together means division. Hope this helps
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A boat costs $8,350 and decreases in value by 12% per year. how much will the boat be worth after 5 years?
BARSIC [14]
The boat would cost 3,340 dollars
7 0
3 years ago
How do you solve this?
solong [7]

It looks like your equations are

7M - 2t = -30

5t - 12M = 115

<u>Solving by substitution</u>

Solve either equation for one variable. For example,

7M - 2t = -30   ⇒   t = (7M + 30)/2

Substitute this into the other equation and solve for M.

5 × (7M + 30)/2 - 12M = 115

5 (7M + 30) - 24M = 230

35M + 150 - 24M = 230

11M = 80

M = 80/11

Now solve for t.

t = (7 × (80/11) + 30)/2

t = (560/11 + 30)/2

t = (890/11)/2

t = 445/11

<u>Solving by elimination</u>

Multiply both equations by an appropriate factor to make the coefficients of one of the variables sum to zero. For example,

7M - 2t = -30   ⇒   -10t + 35M = -150 … (multiply by 5)

5t - 12M = 115   ⇒   10t - 24M = 230 … (multiply by 2)

Now combining the equations eliminates the t terms, and

(-10t + 35M) + (10t - 24M) = -150 + 230

11M = 80

M = 80/11

It follows that

7 × (80/11) - 2t = -30

560/11 - 2t = -30

2t = 890/11

t = 445/11

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2 years ago
A group of students is given a 10 by 10 grid to cut into individual unit squares. The challenge is to create two squares using a
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Answer:

1

Step-by-step explanation:

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7.) If a circle has a diameter of 40 inches, what is the same circles radius?
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The radius is always half of the diameter so it would be 20 inches
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Find the mean, median, mode, and range of the data set after you perform the given operation on each
agasfer [191]

Answer:

mean= 8.8

median= 9

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range= 10

ANSWER: A

Step-by-step explanation:

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3 years ago
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