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Bad White [126]
3 years ago
14

Solve for x: 2(3x - 9) = 18x x = -3/2 x = 3/2 x = 0 x = 6

Mathematics
2 answers:
Mila [183]3 years ago
5 0
Remember yo can do anything to an equation as long as you do it to both sides

so
remember distributive property
a(b+c)=ab+ac

so first distribute
2(3x)+2(-9)=18x
6x-18=18x
minus 6x both sides
-18=12x
divide both sides by 12
-18/12=x
-9/6=x
-3/2=x

easier way is to first divide both sides by 2


x=-3/2
lidiya [134]3 years ago
3 0
6x-18=18x

-18=12x

-1.5=x
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NEED HELP FAST!!!
mina [271]
Remember

we can do anything to an equation as long as we do it to both sides

try to isolate the variable

you have 2 types
x+b=c
x/b=c

fior the first type, minus b from both sides to get
x=c-b

for the second, multiply both sides by b to get rid of the fraction to get
x=cb

also remember that -x times -1=x



b.add 25 to both sides
-a=20
multiply -1
a=-20


c.
-t/8=-4
multiply both sides by 8
-t=-32
mutiply -1
t=32

d. -n/-5=-30
mulitply both sides by -5
-n=150
multiply both sides by -1
n=-150

e. multiply both sides by 12
-l=144
multiply b y-1
l=-144
4 0
3 years ago
Read 2 more answers
Problem: A scuba diver swam 30 feet below sea level. After a couple of minutes, he went down 10 feet more. Find the total distan
QveST [7]

Answer: -40 feet

Step-by-step explanation: the scuba diver starts at sea level (0) then swims down 30 feet (-30). after a couple minutes, goes down 10 feet more (-40) the scuba diver will now be -40 down from sea level. so it should be -40 because the scuba diver swam that much down.

lmk if this is incorrect, i'm not quit sure if it is or not. if i'm wrong, i'm so sorry!!

:)

3 0
3 years ago
7. E(5, 4), F(8, 1) what is the slope of the line
katovenus [111]

Answer:

-1

Step-by-step explanation:

m = y2 - y1 / x2 - x1

= 1 - 4 / 8 - 5

= -3 / 3

= -1

7 0
2 years ago
Bag C is four times lighter than Bag A. Bag B is twice as heavy as Bag C. How much heavier is Bag A than Bag B ?​
LiRa [457]

Answer:

Step-by-step explanation:

Current Weight         Weight after adding Marbles

Giulio:    2x                          2x + 10                    

Jim:         x                             x + 5

You didn't post the options so hopefully you can determine the answer based on the info I provided above.

8 0
2 years ago
Vladimir has 64 coins of .25 cents and 56 coins for .50 cents. What is the greatest number of identical packs of coins with no c
Zina [86]

Answer:

56 coins for 0.50 cents

Step-by-step explanation:

3 0
3 years ago
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