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mezya [45]
3 years ago
5

I have no idea how to do this

Mathematics
1 answer:
Dominik [7]3 years ago
7 0
Factor the problem first. So for number one, take out a seven to make it 7(x+4) and factor by subtraction of square roots on the bottom to make it (x-4)(x+4) Then, because there are factors of (x+4) on the top and bottom, cancel them out to make it 7/(x-4)

Im guessing restrictions are the values x cannot be. So you take the denominator factors of (x+4)(x-4) and set them equal to zero. x+4=0 and x-4=0.

so x cannot =4, and -4

Hope this helps you answer the next ones!
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-1/y^-4<br><br> A -4/y<br><br> B -4y<br><br> C y^4<br><br> D -y^4
Allushta [10]

Answer:

The answer is D: -y^4

Step-by-step explanation:

(-1/y^-4) = -1(y^4)/1 = -y^4

8 0
2 years ago
By experimenting with numerous examples in search of a pattern, determine a formula for fn-1+fn+1. that is , a formula for the s
pashok25 [27]

Answer:

I think its will be B

Step-by-step explanation:


3 0
3 years ago
How many whole numbers are between 1 and 50 that are divisible by 2?
kupik [55]

Answer:

25

Step-by-step explanation:

The first number in the range 1 - 50 that is divisible by 2 is 2 itself.  Then 4, 6, 8, ....

Here's one way to think and count:

2 \rightarrow 1\\4 \rightarrow 2\\6 \rightarrow 3\\8 \rightarrow 4\\\vdots\\50\rightarrow 25

In the table, the number on the right is <u>half</u> the number on the left.  The numbers on the right are just counting numbers (natural numbers), so there are 25 even numbers between 1 and 50.

8 0
2 years ago
Read 2 more answers
Uma atleta percorreu cinco oitavos de uma pista e ainda precisa percorrer 75 quilômetros para completar seu percurso . Quantos q
ivolga24 [154]

Answer:

The athlete will run 200 kilometers.

A atleta percorrerá 200 quilômetros no total.

Step-by-step explanation:

She will run x kilometers.

She has already run 5/8 of the distance(5/8 of x), and still needs to run 75 kilometers.

So

\frac{5x}{8} + 75 = x

x - \frac{5x}{8} = 75

\frac{8x - 5x}{8} = 75

3x = 8*75

x = \frac{8*75}{3}

x = 200

The athlete will run 200 kilometers.

A atleta percorrerá 200 quilômetros no total.

3 0
2 years ago
Please help me on this geometry!! i’ll mark you the brainliest
Gnoma [55]

Answer:

Median

Step-by-step explanation:

A median of a triangle is a line segment joining a vertex to the midpoint of the opposite side.

Hope this helps! Please tell me if I did anything wrong, thank you and have a great day!

4 0
2 years ago
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