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Lena [83]
3 years ago
6

Is this graph a function?

Mathematics
1 answer:
inysia [295]3 years ago
8 0
Sur it's a function because for each x value corresponds one and only one y value.

Another easy way to determine if y is a function is to apply the vertical test:

If you draw a vertical line and this lines intersects the graph in one point, then y is a function

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Please help this is hard
Vladimir [108]

Answer:

10x-15y

Step-by-step explanation:

5(2x-3y)

10x-15y

3 0
3 years ago
The population of a community is known to increase at a rate proportional to the number of people present at time t. The initial
GREYUIT [131]

Answer:

P(0) = 7,917

Step-by-step explanation:

The population of the community is given by the following formula:

P(t) = P(0)(1+r)^{t}

In which P(0) is the initial population and r is the growth rate.

The initial population P0 has doubled in 5 years.

This means that

P(5) = 2P(0)

Which lets us find r.

P(t) = P(0)(1+r)^{t}

2P(0) = P(0)(1+r)^{5}

(1+r)^{5} = 2

Applying the 5th root to both sides

1+r = 1.1487

r = 0.1487

So

P(t) = P(0)(1.1487)^{t}

Suppose it is known that the population is 12,000 after 3 years.

With this, we find P(0)

P(t) = P(0)(1.1487)^{t}

12000 = P(0)(1.1487)^{3}

1.5157P(0) = 12000

P(0) = \frac{12000}{1.5157}

P(0) = 7917

4 0
3 years ago
Dinner is $83 tax is 7.5%
Alborosie

Answer:

Tax is $6.64

Step-by-step explanation:

From what we know dinner is $83 and the tax is %7.5

Step 1) Round the %7.5 to %8

Step 2) Turn the %8 into -> 0.08

Step 3) Multiply 0.08 by 83 which is 6.64

Step 4) Add 6.64 with 83

Answer) Together the full price of the meal is $89.64

Hope this helped! :)

3 0
3 years ago
A Square was altered so that one side is increased by 9 inches in the other side is decreased by 2 inches.The area of the result
LekaFEV [45]

Let s represent the length of any one side of the original square.  The longer side of the resulting rectangle is s + 9 and the shorter side s - 2.

The area of this rectangle is (s+9)(s-2) = 60 in^2.

This is a quadratic equation and can be solved using various methods.  Let's rewrite this equation in standard form:  s^2 + 7s - 18 = 60, or:

s^2 + 7s - 78 = 0.  This factors as follows:  (s+13)(s-6)=0, so that s = -13 and s= 6.  Discard s = -13, since the side length cannot be negative.  Then s = 6, and the area of the original square was 36 in^2.

4 0
3 years ago
I WILL MARK BRAINLIEST FOR CORRECT ANSWER :)
Ostrovityanka [42]

The answer to that question would be 14
4 0
3 years ago
Read 2 more answers
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