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3 years ago

HELP ME PLEASE I NEED TO PASS THIS

Mathematics

2 answers:

Lerok [7]3 years ago

8 0

Answer:

Step-by-step explanation:

matrix multiplication says you take the [x y] vector sideways (as is here) and mutliply by each row. So your top row is

3·x + -1·y which equals 3x-y.

Since this is the top row of your solution,

3x - y = 8.

The bottom row is the same process.

1·x + 2·y = 5

x + 2y = 5

irga5000 [103]3 years ago

5 0

Answer:

i believe the answer is D

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Solve For Each Variable.

bixtya [17]

The first equation given $6=1-2n+5$

We have to add 1 and 5 to the right side first. We will get,

$6= 6 - 2n$

To get rid of 6 from the right side we have to subtract 6 from both sides.

$6-6 = 6-6-2n$

$6-6 = -2n$

$0=-2n$

To find n we have to move -2 to the other side by dividing both side by -2.

$0/-2 = -2n/-2$

$0= n$

$n=0$

So we have got the required answer for the first question.

The solution is n = 0.

The second equation given,

$8x-2 = -9+7x$

First we have to move 7x to the left side by subtracting it from both sides.

$8x-7x-2 = -9+7x-7x$

$8x-7x-2 = -9$

$x-2 = -9$

Now we have to move -2 to the right side by adding 2 to both sides.

$x-2+2 = -9+2$

$x = -9+2$

$x = -7$

We have got the required answer for the second question.

The solution is x = -7.

The third equation given,

$-8 = -(x+4)$

We have to get rid of that negative sign from both sides. As we have negative sign to both sides we can cancel it out. We will get,

$8=x+4$

Now we have to move 4 to left side by subtracting it from both sides.

$8-4 = x+4-4$

$8-4 = x$

$4=x$

$x = 4$

So we have got the required answer .

The solution is x = 4.

3 0

3 years ago

Divide to Find Equivalent Ratios

Brilliant_brown [7]

Answer:

4 are equivalent to 3 feet with 6 feet 72 inches.

Step-by-step explanation:

I'm in war and need brainiest to win plzzz you wont regret .

4 0

3 years ago

A self-tanning lotion advertises that a 4 -oz bottle will provide seven applications. Jen found a great deal on a 13 -oz bott

Alexxx [7]

4oz = 7 app
1oz = 1.75 app

13oz = 1.75 x 13
= 22.75 app

answer = the 13oz bottle should provide 22 application (as .75 does not count as one)

4 0

3 years ago

Could someone help me Plz and Ty <3

velikii [3]

$\bold{Heya~!}$

Your answer will be is :

$\bold{\underline{A.}}$ $\mathfrak{3\sqrt[3]{3}}$

<h2><u>EXPLANATION :</u></h2>

<u></u>

Because its the square root of $\mathfrak{3\sqrt[3]{3.}}$

Hope It Helps ! ~

#LearnWithBrainly

$\underline{Answer~:}$

$\mathfrak{\underline{Dollixna}}$

5 0

2 years ago

Solve cx + d = ex + f for x

Morgarella [4.7K]

Answer:

x= (f-d)/(c-e)

Step-by-step explanation:

cx + d = ex + f

Collecting Like Terms

cx - ex = f - d

x(c - e) = f - d

x= (f-d)/(c-e)

5 0

3 years ago

Read 2 more answers