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3 years ago

ILL GIVE 50 POINTS AND BRAINLIEST!!! ;)

Mathematics

2 answers:

IrinaK [193]3 years ago

4 0

Answer:

X=5

Step-by-step explanation:

VMariaS [17]3 years ago

4 0

Answer:

60°

Step-by-step explanation:

<EAD is 180° as a whole

All that is needed is to subtract 100° and 20° from 180°

now you are left with x° which is 60° left over from the 180°

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PLS HELP ME ASAP FOR QUESTION 11 AND 13!! (MUST SHOW WORK!!!) + LOTS OF POINTS!! *brainliest*

ANEK [815]

-26.125 / 5.5 = -4.75 or 7 3/4

11w - 1/2 = 5.5 - 11 = -5.5 or -5 1/2

7 0

3 years ago

Can anyone answer this for me please?

uysha [10]

Answer:

The 2nd and last options.

Step-by-step explanation:

By looking at the table we know that the 2nd one is an answer for sure.

Also by looking at the table we know that the 3rd and 4th are not true.

put in -1/2 in the function to see if you get -2

1/2(-1/2)+3/2

-1/4+3/2

-1/4+6/4

5/4

So The first one doesn't work either.

Now the last one:

1/2(4)+3/2

4/2+3/2

7/2

So the last one works too.

Hope this helps :)

5 0

3 years ago

What is 8+4(-6x+4)=-6-5x

sergeinik [125]

First do 4(-6x+4) distribute the 4 (So multiply each number in parenthesis by 4) so 8-24x+16=-6-5x

Then put like terms on each side

So do inverse of each number and do that to both sides to their like terms

8+16=-6+19x

Then bring the six over and add like terms

30 = 19x

Then divide 19 in each side and you get

X = 10/21

6 0

3 years ago

Read 2 more answers

Brainly use a matrix to find the solution to the system of equations -8x-8y=-16 6x-9y=-108

Mama L [17]

We want to use a matrix to solve
-8x - 8y = -16
6x - 9y = -108

Before solving, simplify the equations as follows:
Divide the first equation by -8 to obtain
x + y = 2 (1)
Divide the second equation by 3 to obtain
2x - 3y = -36 (2)

In matrix form, the equations are
$\begin{bmatrix}1&1\\2&-3\end{bmatrix} \begin{\bmatrix} x\\y\end{bmatrix}=\begin{bmatrix}2 \\ -36 \end{bmatrix}$

The determinant of the matrix is
D = (1)(-3) - (1)(2) = -5

Use Cramer's Rule.
$x = \frac{1}{D} det(\begin{bmatrix}2&1\\-36&-3 \end{bmatrix} ) = \frac{1}{-5} (-6+36) = -6$
Similalrly,
$y= \frac{1}{-5} det(\begin{bmatrix} 1&2\\2&-36\end{bmatrix} ) = \frac{1}{-5}(-36-4) =8$

Answer: (-6, 8) or x = -6, y = 8

8 0

3 years ago

!!!URGENT!!!

Mandarinka [93]

Answer:

The original cost=$220

Step-by-step explanation:

5 0

3 years ago