Solve the following system of equations. 4x-2y-z=-5 x-3y+2z=3 3x+y-2z=-5

1 answer:

3 0

4x - 2y - z = - 5 ______×2x - 3y + 2z = 3 _______×13x + y - 2z = - 5 ______×1
8x - 4y - 2z = - 10x - 3y + 2z = 33x + y - 2z = - 5
8x - 4y - 2z = - 10(+) x - 3y + 2z = 3_____________9x - 7y = - 77y = 9x + 7y = 9/7x + 1
x - 3y + 2z = 3(+) 3x + y - 2z = - 5_____________4x - 2y = - 24x - 2(9/7x + 1) = - 24x - 18/7x - 2 = - 210/7x = 0x = 0
y = 9/7(0) + 1y = 1
0 - 3(1) + 2z = 32z = 6z = 3

You might be interested in

the price of a new pair of sneakers is $79.95. if sales tax is 7.5%, then approximately, how much tax will be paid on sneakers?

Firlakuza [10]

Answer:

Step-by-step explanation:

Find 7.5% of the sneaker price, by multiplying the price by 0.075:

79.95(0.075)

= 6

So, approximately, the tax will be $6

3 0

3 years ago

Which of the following is equal to 5 1/3

Andrews [41]

Answer:

Step-by-step explanation:

Using the rule of radicals/ exponents

$a^{\frac{m}{n} }$ ⇔ $\sqrt[n]{a^{m} }$

Given

$5^{\frac{1}{3} }$ = $\sqrt[3]{5}$ → C

7 0

3 years ago

Which of the following are valid probability distributions for a discrete random variable

Radda [10]

All of them except B and C. Probabilities must add to 1 and none of the p's can be negative

8 0

4 years ago

Read 2 more answers

Literally anyone HELP

barxatty [35]

Answer:

the answer is the last one, you solve this by comparing the lines from each shape. these shapes are congruent, meaning they're the same, so the like AB on the first shape and EF on the second are the same, and so on if that makes any sense. surely someone else could do a better explanation than me tho

6 0

3 years ago

Please do these thank you!!!!!!!!ASAP this is 7th grade math

yan [13]

1. 4,821 inches
2. Sorry couldn't solve it.
3. Height is 23.5 inches
4. The package can be shipped at special rate.

5 0

3 years ago