Question

I would really appreciate if someone could help me with the following questions below. I really really stink at this.

Answer 1

Here it is

Answer 2

\(\Large\rm\color{orange}{Welcome~to~OpenStudy!}\)
We can help you but you'll have to figure the answers out on your own because this is a quiz.

Answer 3

No worries that's what I'm looking for.

Answer 4

@just_one_last_goodbye @GreatGuy

Answer 5

@Australopithecus

Answer 6

any idea what the little "red marks" mean in your picture?

Answer 7

What red marks are you referring to?

Answer 8

the little red lines on AB and BC

Answer 9

No clue tbh

Answer 10

the red ticks indicate that AB and BC are equal in length so if AB = 80 you have your answer. This is standard for any problem so commit it to memory; if there are more then one set of lines with same lengths they are indicated with two tick marks each for second set etc.

Answer 11

oh. When you see a "hash mark" like those, it means the two line segments are the same length

Answer 12

so you should think: from A to B is some distance. and from A to C is twice the distance from A to B

Answer 13

Okay so it would be 160

Answer 14

now you need to read what they told you.
what did they tell you ?

Answer 15

do you see the question: if AC is 80 ...
that means the distance from A to C is 80 (inches, miles, whatever)
they want to know A to B
we know
AB + BC = AC (the two halves add up to the whole)

Answer 16

ahh 40

Answer 17

yes.

Answer 18

For Q6, if AB is 28, then BC is what ?

Answer 19

it is the same picture and the same idea

Answer 20

56

Answer 21

AB and BC are the same size (that is what the red lines mean)

Answer 22

So they are both 28?

Answer 23

yes AB and BC are both 28

Answer 24

they say BC is also 3x+7
so if BC =28 and BC= 3x +7 we can say
3x+7= 28
can you "solve for x" ?