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MrRissso [65]
4 years ago
7

Some one help plzz

Mathematics
1 answer:
Galina-37 [17]4 years ago
6 0
Yes it is a function because none of the x-values belong to 2 different y-values. The domain is -4, -3, -2, 0, 2, 3. The range is -3, -1, 0, 2, 3. The value of y when x=2 is -3 because when the x-value was 2 the y-value the point was on equaled -3.
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The formula V = IR shows the relationship between voltage, current, and resistance. Solve this formula for R.
gavmur [86]

Answer:

R=V/I

Step-by-step explanation:

Divide V by I to isolate R on one side.

3 0
4 years ago
Read 2 more answers
A video store charges the same fee each day a video is returned late. Craig returned a video 4 days late and paid a $3 fee. Writ
vova2212 [387]

Answer:

$5.25 if returned 7 days late

Step-by-step explanation:

So we know that 4 days late is 3 dollars

We can find the unit rate

3/4 is 0.75

So 75 cents for every late day

Now we just multiply that by 7

0.75*7=5.25

so 7 days, 5.25

**porportional relationship equation**

\frac{3dollars}{4 days}=\frac{X}{7 days}

Now cross multiply

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x=5.25

Same results

4 0
3 years ago
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Which relations are functions?
rewona [7]

Answer:

{(2,4), (-1, 7), (3,0), (5,4)}

{(-6, 1), (0, 1), (2, 1), (3, 1)}

{(-3, -3), (-1, 6), (4, 5), (5, 4)}

Step-by-step explanation:

For a relation to be a function, the same x-value can't have multiple y-values.

For this reason, this relation is not a function:

{(-4,0), (-4,8), (-1, 3), (2,9)}

And these are functions:

{(2,4), (-1, 7), (3,0), (5,4)}

{(-6, 1), (0, 1), (2, 1), (3, 1)}

{(-3, -3), (-1, 6), (4, 5), (5, 4)}

5 0
3 years ago
Solve the system using elimination.
Wewaii [24]

Answer:

The answer is A.

Step-by-step explanation:

A. 3*(-9)=  -27, 4*(-9)= -36, -27-(-36)= 9

B. 3*(-27)= -81, 4*(-9)= -36, -81- (-36) = -45

C. 3*3= 9, 4*9= 36, 9-36= -27

D. 3*(-3)= -9, 4*(-6)= -24, -9-(-24)= 15

4 0
3 years ago
a department store buys 300 shirts at a cost of $5,400 and sells them at a selling price of $20 each. Find the markup price
Romashka-Z-Leto [24]

It is $2 markup price.

8 0
3 years ago
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