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3 years ago

Solve each system using elimination. Each system only has one solution. Write your solution in the form (x, y).

Mathematics

2 answers:

slega [8]3 years ago

7 0

Answer: (6,10)

Explanation:

loris [4]3 years ago

6 0

Answer: (6,10)

Step-by-step explanation:

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Need help!! plzz help asap

yanalaym [24]

Answer:

answer is 12

Step-by-step explanation:

because 5×4=20

so u have to multiply 4 and three

3×4=12

and u can reduce it to

6/10 and reduce it again to

3/5

8 0

3 years ago

A housepainter mixed 5 gal of blue paint with every 9 gal yellow paint in order to make a green paint. Which ratio of gallons of

zepelin [54]

Answer: the ratio of gallons of blue paint to gallons of yellow paint that will make the same shade of green is 5/9

Step-by-step explanation:

The housepainter mixed 5 gallons of blue paint with every 9 gallons of yellow paint in order to make a green paint.

To determine the ratio of gallons of blue paint to gallons of yellow paint that will make the same shade of green, we will divide the gallons on blue paint required by the gallons of yellow paint required. It becomes

The ratio is 5/9 = 5:9

It means that for every 5 gallons of blue paint, 9 gallons of of yellow paint is required

7 0

3 years ago

Which equation is equivalent to sqrt x +11=15

Bas_tet [7]

Answer:

x=16

Step-by-step explanation:

We are given that

$\sqrtx+11=15$

we have to solve this equation for x

in order to do that we need to isolate x first

hence

subtracting 11 from both sides we get

$\sqrtx+11-11=15-11$

$\sqrtx=4$

Now we square on both sides we get

$(\sqrtx)^2=4^2$

$x=4 \times 4$

$x=16$

hence x =16

3 0

3 years ago

I need answers for them three

sergeinik [125]

These are the answers. You subtract 6 from -3 giving you n≥-9. Since n/3 is a fraction, in order to undo it we must multiply it to the other side, giving us n≤-63.

1. n≥-9
3. n≤-63

I hope it helped!

5 0

3 years ago

I don’t understand this one

Masja [62]

Answer:

see below

Step-by-step explanation:

Put -1 where x is in each expression and evaluate it.

You will find that the expression is zero when the numerator is zero. And you will find the numerator is zero when it has a factor that is equivalent to ...

(x +1)

Substituting x=-1 into this factor makes it be ...

(-1 +1) = 0

Evaluating the first expression, we have ...

$\dfrac{4(x+1)}{(4x+5)}=\dfrac{4(-1+1)}{4(-1)+5}=\dfrac{4\cdot 0}{1}=0$

This first expression is one you want to "check."

You can see that the reason the expression is zero is that x+1 has a sum of zero. You can look for that same sum in the other expressions. (The tricky one is the one with the factor (x -(-1)). You know, of course, that -(-1) = +1.)

5 0

3 years ago