solve using elimination 5x-9y=-43 3x+8y=68 what is the answer

Question

02-04-2017
Mathematics

contestada

solve using elimination 5x-9y=-43 3x+8y=68 what is the answer

Respuesta :

Otras preguntas

Write VHDL code for a RAM that has 16 locations each 32 bits wide. There will be a chipselect (CS) input that activates the chip. Another input to the circuit i

he varying amounts of a good or service that producers are willing and able to release on the market at different prices in a particular time period is known as

Calculate the amount of money you'll have at the end of the indicated time period.You invest $1000 in an account that pays simple interest of 6% for 30 years.Th

Question: A swimmer has a swimming speed of 5.75 m/s in still water. When she heads directly across the river, she ends up travelling downstream at an angle of

A major advantage of S corporations is that they: Multiple Choice Can have more stockholders than a C corporation. Require less paperwork to set up than a C cor

7. Evaluate 4P2 O 22 O 12 O 14 5

The time a student sleeps per night has a distribution with mean 6.3 hours and a standard deviation of 0.6 hours. Find the probability that average sleeping tim

Consider the following sets of sample data: A: 431, 447, 306, 413, 315, 432, 312, 387, 295, 327, 323, 296, 441, 312 B: $1.35, $1.82, $1.82, $2.72, $1.07, $1.86,

I need help urgent plz someone help me solved this problem! Can someone plz help I’m giving you 10 points! I need help plz help me! Will mark you as brainiest!

Hey guys! Is there any hispanic influence in New Hampshire? If so, explain. If not, choose the state closest to it.

cher cher · Answer 1 · 2017-04-02T20:45:24+02:00

Equation 1) 5x - 9y = -43
Equation 2) 3x + 8y = 68

Multiply equation 1 by 3, and equation 2 by 5.

1) 3(5x - 9y = -43)
2) 5 (3x + 8y = 68)

Simplify.

1) 15x - 27y = -129
2) 15x + 40y = 340

Subtract equations from each other.

-67y = -469

Divide both sides by -67

y = 7

Plug in (7) for y in equation 1

5x - 9y = -43

5x - 9(7) = -43

Simplify.

5x - 63 = -43

Add 63 to both sides.

5x = 20

Divide both sides by 5.

x = 4

(4, 7)

~Hope I helped!~