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Contact [7]
2 years ago
6

Juanita wants to perform row operations on the augmented matrix for the system below (See pictures). Which matrix should Juanita

use to perform the operations?

Mathematics
1 answer:
Artist 52 [7]2 years ago
5 0

Answer:

The second option

Step-by-step explanation:

The given system of equation is

x+2y=3

-x+y+z=2

y-2z=-3

The augment matrix is obtained by combining the coefficient matrix with the constant matrix to obtain;

\left[\begin{array}{cccc}1&2&0&|3\\-1&1&1&|2\\0&1&-2&|-3\end{array}\right]

Note that the absence of z, in the first equation means its coefficient is zero. The same thing applies to x in the last equation.

The correct choice is the second option.

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Kayson mixes 300300300 milliliters (\text{mL})(mL)left parenthesis, start text, m, L, end text, right parenthesis of spinach, 20
Georgia [21]

Answer:

Total, T = (300s+200b+42d) mg

Step-by-step explanation:

Given that,

Kayson mixes 300 mL spinach, 200 mL of berries, and 42 mL of dressing to make a salad.

There are s mg of vitamin C per mL of spinach, b mg per mL of berries, and d mg per mL of dressing.

In 300 mL of spinach vitamin C is = (300 s)mg

In 200 mL of berries vitamin C is = (200 b)mg

In 42 mL of salad vitamin C is = (42 d)mg

It means that, total mg of vitamin C is :

Total, T = (300s+200b+42d) mg

Hence, this is the required solution.

4 0
2 years ago
Can someone help me with this
Anvisha [2.4K]

Answer:

D. \frac{{7}^{11} }{ {4}^{11} }

Step-by-step explanation:

( \frac{7}{4}) {}^{11} = \frac{7 {}^{11} }{4 {}^{11} }

Since we are multiplying an exponential number to a fraction the answer is going to be

\frac{7 {}^{11} }{4 {}^{11} }

Hope this helps ❤❤❤ ;)

7 0
2 years ago
Read 2 more answers
PLEASE HELP!! Jackson relies on his customers to tell their friends about his business. His business grows as each customer cont
Andrew [12]

Answer:

a) <u><em>y = 9.187 * 1.09899^x</em></u>

b) <u><em>2647.2695</em></u>

Step-by-step explanation:

a) using calculator, (mine is ti84 plus ce), we use stat and edit. we plug in x and y. x will be in the L1 and y wil be in L2. Now, we go to stat, calc,  and we press ExpReg, short for exponential regression. we calculate and get <u><em>y = 9.187 * 1.09899^x</em></u>

you can round if you want. well, i guess you shouldn't, cuz it changes it dramatically

b) Now, we use <u><em>y = 9.187 * 1.09899^x </em></u> into the y= and we put it in whatever slot we want. Now, we press trace. we press 60 to find the y,because the number is always x. the number , y, we want is <u><em>2647.2695</em></u> recommendations.

4 0
2 years ago
When we first learn arithmetic, we focus on working with whole numbers. Then, we extend our understanding to fractions and negat
Alexeev081 [22]

Answer:

Well, I don't think I can remember EVERY skill I was taught through the years but in Kindergarten we used Number Sense so we could accurately... also there's estimation and of course PEMDAS. I've also learned how to round up so that the solution is at least around those numbers if the skill is to be applied.

Step-by-step explanation:

I'm not sure if this'll help but go ahead and have it... just try and change it a bit so they don't get ya for plagirism

5 0
2 years ago
For what value of the variable will<br> b<br> the value of 3−5c be 1 less than the value of 1−c?
Crank

Answer:

c = 3/4

Step-by-step explanation:

Lets set up an equation.

You can get

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now we can solve it.

So by combining like terms, we get:

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that then becomes:

3-5c = -c

--> 3 = 4c

--> c = 3/4

7 0
2 years ago
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