I need answers asap

Mathematics

1 answer:

trasher [3.6K]3 years ago

6 0

Answer:

C. always true

Step-by-step explanation:

<1 and <4 from a straight line and a straight line is always 180 degrees so

You might be interested in

What is x in the equation <br> 4(x+6)= 5(x+9)+4x?

Hoochie [10]

Hello there!

4(x + 6) = 5( x + 9) + 4x

We wanna start with the distributive property

(4)(x) + (4)(6) = (5)(x) + (5)(9) + 4x

4x + 24 = 5x + 45 + 4x

4x + 24 = 9x + 45

Subtract 24 on both sides

4x + 24 - 24 = 9x + 45 - 24

4x = 9x + 21

Subtract 9x on both sides

4x - 9x = 9x + 21 - 9x

-5x = 21

Divide both sides by -5

-5x/-5 = 21/-5

x = -21/5

5 0

3 years ago

Samantha has $45 to spend on a new dress

joja [24]

45 + ( 10 / 100 ) * 45 = 49.5 > 45 No
40 + ( 5 / 100 ) * 40 = 42 < 45 Yes
50 - ( 20 / 100 ) * 50 = 40 < 45 Yes
36 + ( 15 / 100 ) * 36 = 41.4 < 45 Yes

I remember doing this it was fun.

6 0

3 years ago

The following stem-and-leaf plot represents the scores earned by Mr. Roberts's class on their most recent science test.

NNADVOKAT [17]

Total 19 students in class

Hope it helps

4 0

4 years ago

Read 2 more answers

Solve each system by elimination by multiplying both equations. eliminate y first. show all work.

Alex17521 [72]

First $\mathrm{Multiply\:}10x-3y=18\mathrm{\:by\:}3:\quad 30x-9y=54$
Then $\mathrm{Multiply\:}6x-10y=-22\mathrm{\:by\:}5:\quad 30x-50y=-110$
To get $\begin{bmatrix}30x-9y=54\\ 30x-50y=-110\end{bmatrix}$
So...
$30x-50y=-110 \ \textgreater \ \begin{bmatrix}30x-9y=54\\ -41y=-164\end{bmatrix}$
$-41y=-164 \ \textgreater \ \mathrm{Divide\:both\:sides\:by\:}-41 \ \textgreater \ \frac{-41y}{-41}=\frac{-164}{-41}$
To get y = 4.
$\mathrm{For\:}30x-9y=54\mathrm{\:plug\:in\:} \:y=4 \ \textgreater \ 30x-9\cdot \:4=54$
$\mathrm{Multiply\:the\:numbers:}\:9\cdot \:4=36 \ \textgreater \ 30x-36=54 \ \textgreater \$
Next $\mathrm{Add\:}36\mathrm{\:to\:both\:sides} \ \textgreater \ 30x-36+36=54+36 \ \textgreater \ \mathrm{Simplify} \ \textgreater \ 30x=90$
Finally $\mathrm{Divide\:both\:sides\:by\:}30 \ \textgreater \ \frac{30x}{30}=\frac{90}{30} \ \textgreater \ x = 3$
Therefore our solutions are y = 4, x = 3

8 0

3 years ago

Is .634 repeating a whole number

kakasveta [241]

No, I don't think so.

4 0

3 years ago