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shepuryov [24]
3 years ago
15

Solve the system of linear equations by adding or subtracting. 4x + y = −9 9x − y = 1

Mathematics
1 answer:
7nadin3 [17]3 years ago
5 0

Answer:

I believe the answer is

(-8/13,-85/13)

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What is 80 in its simplest form as a fraction?
Ann [662]

I believe the correct given problem is:

“What is 80% in its simplest form as a fraction?”

 

Take note that you missed to place the percent sign which is very important.

 

Now to solve this, 80% when converted to decimal form is 0.80 which means that you have 80 parts per 100 parts. Therefore the fraction form of this would be 80 / 100.

fraction = 80 / 100

However this fraction is not yet the answer because we can still simplify this further. First step in simplifying is to divide both the numerator and denominator by 10 so that we are left with:

8 / 10

Next step is to divide by 2:

4 / 5

 

Now we can see that we can no longer divide this (numbers should be whole number). Therefore the simplest form as a fraction is 4/5

 

Answer:

4/5

6 0
3 years ago
I need help finding the inverse of this problem
fomenos

y=\sqrt{x-1}+6

(Notice that we always have y\ge6[tex].)Swap [tex]x and y, then solve for y:

x=\sqrt{y-1}+6

x-6=\sqrt{y-1}

(x-6)^2=(\sqrt{y-1})^2

(x-6)^2=y-1

y=(x-6)^2+1 (this is the inverse)

###

This inverse is valid only for x\ge6. Why?

Suppose we take x=0. Then

y=(0-6)^2+1=37

This would suggest that in the original equation, we should get x=37 when y=0. But when we check this, we end up with

0=\sqrt{37-1}+6=\sqrt{36}+6=6+6=12

which is clearly not true.

6 0
3 years ago
Given ∠8≅∠12, which lines, if any, must be parallel based on the given information? Justify your conclusion.
Valentin [98]
Did you figure this out yet???
8 0
3 years ago
Read 2 more answers
If Tina traveled 1,000 miles in 5 hours on her plane flight to her vacation destination, how fast was the plane traveling? A.200
belka [17]
OK so for this it will be simple 
1,000 divided by 200 is 5 
so if the plane took 5 hours to do 1,000 miles then the plane was traveling at option A. 200 miles per hour.
4 0
3 years ago
Read 2 more answers
Need help with math homework
borishaifa [10]

Answer:

sorry di ko alam

Step-by-step explanation:

‍‍‍‍‍

7 0
3 years ago
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