3 years ago

What is the solution to the system of equations? -3x-y+z=6 -3x-y+3z=0 x-3z=3

Mathematics

1 answer:

valentina_108 [34]3 years ago

4 0

Answer:X/3X=3

We move all terms to the left:

X/3X-(3)=0

Domain of the equation: 3X!=0

X!=0/3

X!=0

X∈R

We multiply all the terms by the denominator

X-3*3X=0

Wy multiply elements

X-9X=0

We add all the numbers together, and all the variables

-8X=0

X=0/-8

X=0

Step-by-step explanation:

You might be interested in

What is 1.234 + 8.89?

goldenfox [79]

Answer:

Step-by-step explanation:

The answer is 10.124

3 0

3 years ago

Read 2 more answers

√10 Multiple √15 is equal to

icang [17]

Answer:

a). 5√6

$\sqrt{10} \times \sqrt{15} \\ = ( \sqrt{5} \times \sqrt{2} ) \times ( \sqrt{5} \times \sqrt{3} ) \\ = {( \sqrt{5}) }^{2} \times ( \sqrt{2} \times \sqrt{3} ) \\ = 5 \times ( \sqrt{6} ) \\ = 5 \sqrt{6}$

5 0

3 years ago

What is 3 divided by 5? A: 1 2/3 B:15 C:3/5 D:1/15

igor_vitrenko [27]

The answer is C : 3/5

8 0

3 years ago

A pair of pants originally cost $15 and are 10% off. In addition, you have a coupon to get another 20% off. How much will the pa

Archy [21]

$10.50 and 6/9

hope this helps!

7 0

3 years ago

The owner of a local nightclub has recently surveyed a random sample of n = 250 customers of the club. She would now like to det

Maru [420]

Answer:

0.077994

Step-by-step explanation:

Given that the owner of a local nightclub has recently surveyed a random sample of n = 250 customers of the club.

$H_0: Mean = 30\\H_a: Mean >30$

(Right tailed test)

Sample size = $n=250$

Sample mean = 30.45

Mean difference = $30.45-30=0.45\\$

Sample std dev s = 5

Sample std error = $\frac{5}{\sqrt{n} } =\frac{5}{\sqrt{250} } \\=0.3163$

Test statistic = Mean diff/std error = $=\frac{0.45}{0.3163} =1.423$

Since population std deviation is not know we use t test

p value = $0.077994$

4 0

3 years ago