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4 years ago

How to factor 4x squared -121

Mathematics

1 answer:

zepelin [54]4 years ago

4 0

This is the answer...hope i helped

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Maya had $27. She spent all the money on buying 3 burgers for $x each and 2 sandwiches for $y each. If Maya would have bought 2

defon

Answer:

Option C

The student's conclusion is correct because the solution to the system of equations $3x+2y=27$ and $2x+y=16$ is $(5,6)$

Step-by-step explanation:

Let

x------> the cost of each burger

y-----> the cost of each sandwich

we know that

$3x+2y=27$ -----> equation A

$2x+y=(27-11)$

$2x+y=16$ ----> equation B

Solve the system of equations

Multiply the equation B by $-2$

$-2(2x+y)=-2*16$ -----> $-4x-2y=-32$ ------> equation C

Adds equation A and equation C

$3x+2y=27 \\-4x-2y=-32\\ ----------\\ 3x-4x=27-32\\ -x=-5\\x=5$

Substitute the value of x in the equation B

$2(5)+y=16$

$10+y=16$

$y=6$

The solution of the system of equations is the point $(5,6)$

The price of each burger is $\$5$

The price of each sandwich is $\$6$

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3 years ago

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Maths assignment <br> ( x+y,x-y)=(3,1)

PilotLPTM [1.2K]

Step-by-step explanation:

I hope this will help you

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3 years ago

Area of the isosceles triangle

Arlecino [84]

Answer:130

Step-by-step explanation:

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Use interval notation to express the following:<br> The set of all numbers less than 2.

AlexFokin [52]

Answer:

( - infinity, -3 ] [ -2, infinity )

square bracket means it includes the end point.

Step-by-step explanation:

(-∞, -3]U [-2,∞)

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Answer:

The answer is 60

Step-by-step explanation:

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