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krek1111 [17]
2 years ago
12

(x+4)(x+2)/4x+8 restrictions

Mathematics
1 answer:
Brums [2.3K]2 years ago
7 0
Solve the equation 4x + 8 = 0
4x = -8
x = -2

so doesn't exsist at x= -2
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If the product of two positive fractions a and b is 15/56, find three pairs of possible values for a and b
Andrews [41]

Answer:

First possible pairs = (3/7)*(5/8) = 15/56

second possible pairs = (3/4)*(5/14) = 15/56

third possible pairs = (1/2)*(15/28) = 15/56

Step-by-step explanation:

According to the question,

a x b = 15/56

three possible pairs will be as follows:

Before proceeding to make possible pairs, we have to know the prime factorization of the numbers -

15 = 1, 3, 5, 15

56 = 1, 2, 4, 7, 8, 14, 28, 56

As we need three possible pairs, we have to check which pairs take us to 15/56. Again, since the fraction is positive, therefore, the fractions will be proper. Therefore, 3/2, or 5/4 will not be counted. Therefore,

First possible pairs = (3/7)*(5/8) = 15/56

second possible pairs = (3/4)*(5/14) = 15/56

third possible pairs = (1/2)*(15/28) = 15/56

fourth possible pairs = (3/8)*(5/7) = 15/56

So, we can get those four possible pairs. Among those, first 3 pairs are different. Therefore, those are possible pairs.

4 0
2 years ago
The graph of a quadratic function contains (4,-64) and it's vertex is at the origin.write an equation for this function.
lesya692 [45]

Answer:

Step-by-step explanation:

Not sure what form you need this in, but it really doesn't matter, as you'll see in the final equation.  I used the vertex form and solved for a:

y=a(x-h)^2+k

We are given the vertex (h, k) as the origin (0, 0), and we have a point that the graph goes through as (4, -64).  That's our x and y.  Plugging in what we have:

-64=a(4-0)^2+0 gives us

-64 = 16a and

a = -4.  That means that the quadratic equation is

y=-4x^2  which is both vertex form and standard form here, no difference.

5 0
3 years ago
In a class of 29 students, 9 play an instrument and 23 play a sport. There are5
GenaCL600 [577]

Answer:

5/23

Step-by-step explanation:

23 play a sport and 5 play both an instrument and a sport so 5 out of 23 play an instrument given that they play a sport

3 0
2 years ago
What is the answer and how do you even do this please help​
Degger [83]

Answer:

Where is the question or problem that you want answered?

Step-by-step explanation:

I won't be of much help if I do not know what is it that you are asking help for.

7 0
3 years ago
The ratio of girls to boys in a a gardening club was 6:2 there were 16 boy how many are girls
marishachu [46]

Answer:

I don't know

Step-by-step explanation:

tdhdujdjbd

3 0
1 year ago
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