3 years ago

A student is trying to solve the system of two equations given below:

1 answer:

5 0

Your answer is the third one. WHen it comes to system of equations, this will cancel out 4a, therefore isolating the variable. That turns the equation into -2b=-5.

You might be interested in

Ai Mi uses 7 gallons of gas to drive 151.9 miles in her car. Find the rate of change.

Fynjy0 [20]

Answer:

21.7

Step-by-step explanation:

Take 151.9/ 7 and that is your answer. All you have to do is divide.

5 0

2 years ago

Simplify the following polynomial expression: (5x-9x+7x-1) + (-8x^4+4x^2-3x+2)-(-4x^3+5x-1)(2x-7)

Sauron [17]

Answer:

Step-by-step explanation:

because you use pemdas

5 0

3 years ago

3 miles in 25 minutes same rate in 20 minutes?

DedPeter [7]

Step-by-step explanation:

25 minutes=3 miles

1 minute = 3/25 miles

20 minutes = 3/25 * 20 miles

= 2.4 miles

Therefore, the answer is 2.4 miles.

8 0

3 years ago

9x+5y=34 8x-2y=-2 What are the values of x and y? Please explain the steps.

allsm [11]

Answer:

x = 1 and y =5

Step-by-step explanation:

$8x -2y= -2\\Divide by -2\\-4x+y = 1\\add 4x\\y= 1+4x\\$

Substitute this value of y in the next equation.

$9x+5(1+4x) = 34\\9x+5+20x=34\\29x+5=34\\29x=29\\x=1$

Solve for y using x.

$y=4x+1\\y=4(1)+1\\y=5$

8 0

3 years ago

Plane STL and plane Z would intersect at TV XL STV SLV

netineya [11]

Answer:

qcghcd

Step-by-step explanation:

3 0

3 years ago