Question

please help me
1. A red hot air balloon is 10 meters above the ground, rising 15 meters per minute, and a blue balloon is 150 meters above the ground, descending 20 meters per minute. How high in the air will they be when they pass each other?
a. 60 meters b. 70 meters c. 4 minutes d. 90 meters
2. When solving the following system, which expression could be substituted for x? x + 4y = 1
2x - 3y = -9
a . 4y - 1 b. 1 - 4y c. 3y - 9 d. -9 - 3y
3. If x - 3y = -9 and 5x - 2y = 7, what is the value of x?
a. 1 b. 2 c. 3 d. 4

Answer 1

what do you think 1 is ?

Answer 2

you have to help me as well xD

Answer 3

its b

Answer 4

a

Answer 5

b =)

Answer 6

oh ok

Answer 7

find the one they = to 1st xD

Answer 8

ok

Answer 9

plz @jakashaka123 explain to crazy_girl how you got your answer

Answer 10

don't just give the answer - Read Code of Conduct

Answer 11

so you would add 15 to 10 and subtract 20 from 150

Answer 12

ok she gots it

Answer 13

eventually they will get to be the same number

Answer 14

did i do good @welshfella

Answer 15

hmmmm ????

Answer 16

oh well my teacher has to take my phone thanks @welshfella

Answer 17

can u help me with the rest

Answer 18

yes that's better

Answer 19

2. x + 4y = 1

make x the subject by subtracting 4y from both sides:-

x = 1 - 4y

Answer 20

so thats b for q 2

Answer 21

thank you

Answer 22

3.
x - 3y = -9
5x - 2y = 7

we need to find the value of x

best way is to multiply the first equation by 2
and second equation by -3 so we get 6y and -6y in the 2 equations

2x - 6y = -18
-15x + 6y = -21 Adding these 2 equations eliminate the term in y:-

-13x = -39

divide both sides by -13:-

x = 3

Answer 23

thank u

Answer 24

yw