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3 years ago

I NEED ANSWERS WITH WORKOUT PLS ANYONE HELP / WRITE ON PAPER! -giving brainlist

Mathematics

1 answer:

Verdich [7]3 years ago

7 0

Answer:

I don't know if this is all correct, but I tried

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Evaluate UV if possible.

Mnenie [13.5K]

Answer: B

Step-by-step explanation:

Multiply U and V:

$\begin{pmatrix}-9&1&0\\ \:4&0&2\\ \:0&1&5\end{pmatrix}\begin{pmatrix}2\\ \:-2\\ \:1\end{pmatrix}$

$\mathrm{Multiply \ the \ rows \ of \ the \ first \ matrix \ by \ the \ columns \ of \ the \ second \ matrix:}$

$\begin{aligned}&\left(\begin{array}{ccc}-9 & 1 & 0\end{array}\right)\left(\begin{array}{c}2 \\-2 \\1\end{array}\right)=(-9) \cdot 2+1 \cdot(-2)+0 \cdot 1 \\&\left(\begin{array}{ccc}4 & 0 & 2\end{array}\right)\left(\begin{array}{c}2 \\-2 \\1\end{array}\right)=4 \cdot 2+0 \cdot(-2)+2 \cdot 1 \\&\left(\begin{array}{lll}0 & 1 & 5\end{array}\right)\left(\begin{array}{c}2 \\-2 \\1\end{array}\right)=0 \cdot 2+1 \cdot(-2)+5 \cdot 1\end{aligned}$

$=\begin{pmatrix}\left(-9\right)\cdot \:2+1\cdot \left(-2\right)+0\cdot \:1\\ 4\cdot \:2+0\cdot \left(-2\right)+2\cdot \:1\\ 0\cdot \:2+1\cdot \left(-2\right)+5\cdot \:1\end{pmatrix}$

$\mathrm{Simplify\:each\:part:}$

$=\begin{pmatrix}-20\\ 10\\ 3\end{pmatrix}$

Therefore, the correct answer is B

5 0

3 years ago

A suit is on sale for $336, which is 64% of the regular price.<br> What is the regular price?

Leto [7]

Answer:

Hi there!

Your answer is

Regular price is 525$

Step-by-step explanation:

336$ = 64%

/64 to determine 1%

5.25$ = 1%

*100 to determine regular price

525$ = 100%

8 0

4 years ago

Brenda bought five hats. A week later half

VashaNatasha [74]

Answer:

Step-by-step explanation:

23 divided by X. X=half of 23. but really, you need to add to it. other than that i can't help ya, all i know is that half of 23 is 11.5

8 0

3 years ago

I need help, the question is “What is the slope, m, and y-intercept for the line that is plotted on the grid below?”

vlabodo [156]

Answer:

m = 2, (0,4)

Step-by-step explanation:

Slope is 2

Y intercept is 0,4

3 0

3 years ago

What is the percent increase between 1200 grams and 550 grams

makkiz [27]

Answer:118%

Step-by-step explanation: You would subtract 1200 by 550 and put that answer (118) over 1000 and then that would be your percent 118%.

7 0

3 years ago