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sergejj [24]
3 years ago
8

PLEASE HELP ***What is the length of AC??? Please help me understand how to find this

Mathematics
1 answer:
puteri [66]3 years ago
6 0
The answer is 144.

AC and CE have the same ratio as BA and DE. So you can get the answer by getting their proportions. 

<u>  84  </u> =  <u> 7 </u>
156-x     x 

Cross multiply, transpose, and simplify to get the variable x.

84x = 1092-7x
84x + 7x = 1092
91x = 1092
x = 12

To get AC, substitute. 

AC = 156 - x
AC = 156 - 12
AC = 144

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Hi, help a sis out please :( thank you!!
maksim [4K]

Answer:

Yeah, D is the right anwser!

Step-by-step explanation:

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7 0
3 years ago
Read 2 more answers
PLEASE HELP ME OUT FASTTTTT
nydimaria [60]

Answer:

1 more slice

Step-by-step explanation:

1/2 of the pizza would be 4 since (8÷2=4)

So since we need 4 pizza slices to be gone in order to make 1/2 of the pizza...

and since we know that there are three slices missing....

the equation for this is 8-3=5 and we can't have 5 we need 4 so we need 1 more slice to be eaten

6 0
3 years ago
Whats the answer to <br> y=3x+9
MakcuM [25]

Answer:

x=-3

Step-by-step explanation:

so you tryna get x by itself, so you are gonna do the opposite. so move nine over by subtracting it.

-9=3x

now you have to divide -9 by 3 to move it over

-2=x

7 0
3 years ago
Please answer &amp; explain this
sdas [7]
Parallel lines have the same slope.

To compare the slopes of two different lines, you have to get
both equations into the form of    
                                                        y = 'm' x  +  (a number) .

In that form, the 'm' is the slope of the line.
Notice that it's the number next to the 'x' .

The equation given in the question is    y = 3 - 2 x .
Right away, they've done something to confuse you.
You always expect the 'x' term to be right after the 'equals' sign,
but here, they put it at the end.  The slope of this line is the  -2 .

Go through the choices, one at a time.
Look for another one with a slope of  -2 .
Remember, rearrange the equation to read ' y = everything else ',
and then the slope is the number next to the 'x'.

Choice #4:  y = 4x - 2 .  The slope is  4 .  That's not it.

Choice #3:  y = 3 - 4x .  The slope is  -4 .  That's not it.

Choice #2).                       2x + 4y = 1

Subtract 2x from each side:    4y = 1 - 2x

Divide each side by  4 :             y = 1/4  -  1/2 x .

                                                     The slope is  -1/2.  That's not it.

Choice #1).                                 4x + 2y = 5

Subtract 4x from each side:              2y = 5 - 4x

Divide each side by 2 :                        y = 5/2  - 2 x .

                                                       The slope is -2 .
                                                       This one is it.  
                This one is parallel to  y = 3 - 2x ,
                 because they have the same slope.
4 0
3 years ago
IM PUTTING THIS FOR 30 POINTS PLEASE ANSWER
salantis [7]

Answer:

2(Jill) - 20 + (Jill) = 205

3(Jill) = 225

(Jill) = 75

(Jack) = 2(75) - 20 => 150 - 20 = 130

Jill= 75

Jack= 130

Step-by-step explanation:

6 0
3 years ago
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