Solve the system. 7x + 2y = 24
8x + 2y = 30

Solve the system.

4x + 11y = 9
x + 11y = −6

Solve the system.

−6x + 6y = 6
-6x + 3y = −12

Solve the system.

3x + 2y = 9
3x − 7y = -18

Hi myself Shrushtee.

Step-by-step explanation:

Lines are concurrent when

∣

∣

∣

∣

∣

∣

∣

∣

A

1

A

2

A

3

B

1

B

2

B

3

C

1

C

2

C

3

∣

∣

∣

∣

∣

∣

∣

∣

=0

So,

∣

∣

∣

∣

∣

∣

∣

∣

3

8

2

−4

−11

−3

−13

−33

λ

∣

∣

∣

∣

∣

∣

∣

∣

=0

⇒3(−11λ−99)+4(8λ+66)−13(−24+22)=0

⇒−33λ−297+32λ+264+26=0

⇒λ=−7

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.