3 years ago

2a+3b=10 2a+3b=23 How to isolate them and substitute it

1 answer:

3 0

You need to solve for one of the variabkes and then plug it in
when I did one of them I got a=5-3b/2 so after that you plug that in for a and solve for the other variable, hope it helps

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Select the expressions whose value is 4. (-2)² |- 4| - 4÷2 2(-2)

Dmitry [639]

The first and the second one.

-2*-2=4

Absolute value of -4 is 4

7 0

3 years ago

What is the standard form of this expression? (4y-9)(2y-3)

Setler [38]

Answer:

-22y+27

Step-by-step explanation:

(4y-9)(2y-3)

Distribute:

8y-12y-18y+27

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8y-12y-18y=-22y

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3 years ago

If 2a-8=4 and 3b-8=10, what is the value of a+b?

Irina-Kira [14]

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3 years ago

Read 2 more answers

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lesya692 [45]

Answer:

Step-by-step explanation:

for 1st week=1 ¢

for 2nd week= 2¢

for 3rd week= 4¢

for 4th week=8¢

for 5th week=16¢

for 6th week=32¢

for 7th week=64¢

for 8th week=64+64=128¢

for 9th week= 128+128=256¢

for 10th week= 256+256=512¢

.: he saved a total of

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4 0

3 years ago

What is the solution to the system x+y=10 3y=-3x+30 PLEASE helpppp

choli [55]

Answer:

Step-by-step explanation:

x+y=10

x=10-y

x=10-5

x=5

3y= -3x+30

3(10-y)= -3(10-y)+30

30-3y= -30+3y+30

30+30-30=6y

30=6y

y=5

6 0

3 years ago