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Lynna [10]
3 years ago
5

PLEASE HELP MEE please33​

Mathematics
1 answer:
Sever21 [200]3 years ago
3 0

Answer:

x=3, y=-1

Step-by-step explanation:

3x+y=8, 2x-2y=8

Double the first equation, then add the second

  6x+2y=16

+ 2x-2y=8

The y's cancel each other out.

8x=24

x=3

Solve for y

6-2y=8

2y=-2

y=-1

Double check:

6(3)+2(-1)=16

18-2=16

Yay!

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Alex had 4 cakes. He gives his friend 3, how many does he have?​
Oduvanchick [21]

Answer:

Alex has 1 cake

Step-by-step explanation:

I mean pretty simple subtraction here, it's 4-3=1. That's finger math dude

7 0
4 years ago
Read 2 more answers
A submarine is cruising at an elevation of
krek1111 [17]

Answer:

Step-by-step explanation:

these are two different questions .

first i solve first

position of submarine= -250/3 meters below see level

height descended=120 % of 250/3=120/100 ×(250/3)=300,00/300=100 m

new location=-250/3+(-100)=-650/3 below see level.

2nd question

position of submarine=-250 2/3=-752/3 m below see level

height descended=120 5/8=965/8 m =-965/8 m below see level

new positin=-752/3+(-965/8)=-(6016+2895)/24=-8911/24=-371 7/24m below sesa level.

6 0
3 years ago
What is the answer to -8x-9>-21
dybincka [34]
<h3>:- Solution</h3>

-8x - 9 > -21

Move -9 to right side

-8x > -21 + 9

-8x > -12

x < -12/-8

x < 3/2

the answer to -8x - 9 > -21 is <u>x</u><u> </u><u><</u><u> </u><u>3</u><u>/</u><u>2</u>

3 0
3 years ago
If Tina traveled 1,000 miles in 5 hours on her plane flight to her vacation destination, how fast was the plane traveling? A.200
belka [17]
OK so for this it will be simple 
1,000 divided by 200 is 5 
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4 0
3 years ago
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I need help cause I'm really bad at math. ¯\_(ツ)_/¯
FromTheMoon [43]

Answer:

ill explain better

Step-by-step explanation:

use distrubrity property and you get 6x + 6x -18y+6+(-9) then you add 18 because you have to get the y way so you do the opposite of subtracting which is adding so when you add the 18 to it self you then add the 18 to one of the 6x the you get 24x+6x+-4 which u add 6 to -9 the to combine like terms and get 30x+-4

4 0
3 years ago
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