2 years ago

Answer please !! Due in 45 minutes m

Mathematics

1 answer:

weqwewe [10]2 years ago

5 0

Answer:

(-3,3)

Step-by-step explanation:

Using elimination:

Multiply the first equation by 8 and the second by 5 which equals

40x+56y=48

-40-60y=-60

Now you add them together

40x+(-40x)=0 so that crosses out

56y+(-60y)= -4y

48+(-60)=-12

You now have -4y=-12

Divide by -4

y=3

Now plug in y to any of the equations

5x+7(3)=6

5x+21=6

Subtract 21 from both sides

5x=-15

Divide by 5

x=-3

Your final solution is (-3,3)

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Lubov Fominskaja [6]

Answer:

Step-by-step explanation:

Isolate a

f = m × a

divide m from both sides

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3 0

3 years ago

Zelina scored 10% higher on her second quiz than on her first quiz. On her third quiz, Zelina scored 20% higher than on her seco

pishuonlain [190]

Answer:

30%

Step-by-step explanation:

you just add 10% and 20%

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2 years ago

Given: <PQR is a right angle Prove: <PQS and <SQR are complemantary

amm1812

Answer:

see the explanation

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

m∠PQS+m∠SQR=m∠PQR ----> equation A (by Addition Angle Postulate)

we have that

m∠PQR=90° ----> equation B given problem (because is a right angle)

substitute equation B in equation A

m∠PQS+m∠SQR=90°

Remember that

Two angles re complementary is their sum is equal to 90 degrees (Definition of complementary angles)

therefore

m∠PQS and m∠SQR are complementary angles

3 0

3 years ago

Sam, Maya, and John playing a match, Sam has Half of what Maya has, and maya has fewer than John with three points. Their points

Ksivusya [100]

so john is x and if Maya has the same as john but -3 then

x+x-3

but sam is still missing and she has half of Maya which is 0.5x - 1.5

so the equation is

x+x-3+0.5x-1.5=68

and then you add 3 and 1.5 to 68 which is

2.5x=72.5

and you divide by 2.5 which is 29

John has 29 points

7 0

2 years ago

Solve for w<br> 5 (w - 1) - 6 = -2 (-6w+7) -w<br> Simplify your answer as much as possible.

Soloha48 [4]

It would be w=3/6 or 1/2

8 0

3 years ago