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icang [17]
3 years ago
9

HELP ME WILL MARK YOU AS BRAINLIEST IF CORRECT

Mathematics
1 answer:
Verdich [7]3 years ago
6 0

Answer:

C. (-3, 2, -1)

Step-by-step explanation:

There are two types of matrices. One is REF and the other is what makes REF simpler--RREF. We use RREF to solve for REF because it makes the solution easy to find. RREF is displayed in your problem... it means that it's already solved, so the answers are already given on the right side, which is -3,2,-1. This only works with the combination provided (with the 0s and 1s). Otherwise, you'd have to solve.

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15 POINTS! + BRAINLIEST.
bezimeni [28]

Answer:

x^6 + 2 x^5 - 6 x^4 + 3 x^2 + 6 x - 18

Step-by-step explanation:

f(x) = x^2 +2x-6

g(x) =x^4+3

We want to find f*g

(f*g)(x) = (x^2 +2x-6)(x^4+3)

Distribute

          =x^2*x^4 +3x^2 +2x*x^4 +2x*3 +-6x^4 -6*3

         = x^6 +3x^ +2x^5 +2x^3 -6x^4 -18

Combine like terms

         =x^6 + 2 x^5 - 6 x^4 + 3 x^2 + 6 x - 18

8 0
4 years ago
Solve by the substitution method. 8x + 9y=56 -9x + y = 26​
Nikolay [14]

Answer:

(-2,8)

Step-by-step explanation:

8x + 9y=56

-9x + y = 26​

---------------------------------------------------------------------------------

-9x + y = 26​

    +9x = +9x

y = 9x + 26

---------------------------------------------------------------------------------

8x + 9(9x+26) = 56    <-- substitute for y from above

8x + 81x + 234 = 56

      89x + 234 = 56

               - 234 = - 234

                  89x = - 178

                      x = -2        <--- we got the x value!!

--------------------------------------------------------------------------------

-9x + y = 26​

-9 (-2) + y = 26    <-- substitute for x from above

18 + y = 26

   - 18 = - 18

      y = 8    <-- we got the y value!!

6 0
3 years ago
The workers' union at a particular university is quite strong. About 96% of all workers employed by the university belong to the
vredina [299]

Answer: 0.1699

Step-by-step explanation:

Given: The proportion of all workers employed by the university belong to the workers' union = 0.96

Sample size : n= 5

Binomial probability distribution formula :

P(X=x)= \ ^nC_xp^x(1-p)^x

The probability that exactly 4 of the workers interviewed are union members :-

P(X=4)=^5C_4(0.96)^4(1-0.96)^1\\\\=(5)(0.96)^4(0.04)\\\\=(5)(0.84934656)(0.04)\\\\=0.169869312\approx0.1699

Required probability = 0.1699

7 0
3 years ago
What is 1,256 rounded to the nearest hundredth<br>​
Eva8 [605]

Answer:

1,300

Step-by-step explanation:

1256, if something is more than 5 then it goes up but if it's 4 or lower it goes down so 1256 rounded up to the nearest hundredth is 1300.

5 0
3 years ago
Read 2 more answers
Samara deposited $5,000 into an account and didn't make any more deposits. The interest rate is 12%. How much did she earn in in
irinina [24]
First start with making the percentage a decimal. 12 divided by 100= 0.12
5000 times 0.12= 600
600 times 6= 3600

Samara earns $3,600 in interest after 6 years
4 0
4 years ago
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