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PolarNik [594]
4 years ago
15

Solve the system: 2x – 6y + 4z = 3 -3x + 9y – 6z = -3 5x – 15y + 10z = 5

Mathematics
1 answer:
mel-nik [20]4 years ago
5 0

Answer:

7

Step-by-step explanation:

i hope this is right, I did the math

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R * p = -37.8 <br>but also<br>r + p = 13.5<br><br>what would r be?<br>what would p be?
Nana76 [90]

R * p = -37.8


Solve for either R or p.


R = -37.8/p


Now plug into R + p = 13.5


-37.8/p + p = 13.5


Solve for p.


After finding p, plug your p-value into either R + p or R*p to find R.


Take it from here.




5 0
3 years ago
Read 2 more answers
What is the sum of the polynomials?<br> (6x+7+x^2)+(2x^2-3)
Oduvanchick [21]
Hai !
6x+7+x^2+2x^2-3
6x+7+x^2+2x^2+-3
combine like terms
6x+7+x^2+2x^2+-3
(x^2+2x^2)+(6x)+(7+-3)
=3x^2+6x+4
Cheers :3
4 0
4 years ago
What are composite for 48?
weqwewe [10]
<span> It can be divided by 8 and 6. 8x6=48.</span>
3 0
3 years ago
Use the given information to construct a 99% confidence interval estimate of the mean of the population. n = 39, σ = 3.86, Xbar
horsena [70]

Answer:

40.1 < μ < 43.3

Step-by-step explanation:

Margin of error = critical value × standard error

ME = CV × SE

At 99% confidence and 38 degrees of freedom, CV = 2.712.

SE = s / √n

SE = 3.86 / √39

SE = 0.618

So the margin of error is:

ME = 2.712 × 0.618

ME = 1.7

So the 99% confidence interval of the population mean is:

μ = 41.7 ± 1.7

40.0 < μ < 43.4

Closest answer is the first one.

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3 years ago
A CD sells for $13.95 at Music and More. The same CD sells for $15.60 at CD Supply. About how much less is the CD at Music and M
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