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gtnhenbr [62]
3 years ago
11

How do I solve this with Substitution?

Mathematics
1 answer:
TiliK225 [7]3 years ago
8 0
They give you an "x =" statement so you plug in the right side of the equals sign into the first equation wherever x appears. So...

y = 10 - 2(y - 4)
y = 10 - 2y + 8
y = 18 - 2y
y + 2y = 18
3y = 18
y = 6

Now we plug in this result for the y-value into the "x =" statement.

x = 6 - 4
x = 2

Your answer is (2, 6) 
You might be interested in
The mean score on a set of 17 test is 72. Suppose two more students take the test and score 68 and 63. What is the new mean?
Masja [62]

Answer:

New mean=71.32

Step-by-step explanation:

The expression for the total initial score is;

T=M×S

where;

T=total initial score

M=mean score

S=number in the set

replacing;

T=unknown

M=72

S=17

replacing;

T=72×17=1,224

The total initial score=1,224

Determine the total score by;

total score=total initial score+total final score

where;

total initial score=1,224

total final score=(68+63)=131

replacing;

total score=1,224+131=1,355

Determine the new mean;

New mean=total score/new number

where;

total score=1,355

new number=(17+2)=19

replacing;

new mean=1,355/19=71.32

8 0
3 years ago
Solve the following equation for aa. Be sure to take into account whether a letter is capitalized or not.
Snezhnost [94]

Answer:

Since you state that capitalization is important, then we can see that it is not possible to solve the equation for F.

If that's correct, then the only point of this was that we need to pay attention to symbols when dealing with equations or expressions

Step-by-step explanation:

happy to help have a bless day or night:)

3 0
3 years ago
A cuboid has a base of 12. 5 cm by 20 cm. holds exactly 1 litre of water. What is the height.​
nikitadnepr [17]

Answer:

4 cm

Step-by-step explanation:

V=L×W×H

V=1 litre = 1000 cm³

H= V/LW

1000/(12.5×20)=4

height= 4cm

6 0
3 years ago
Let f (x)=-3x+ determine f (-5)
loris [4]
F(x)=-3x
f(-5)=-3* (-5)
 =15

hope ths help u !!!!!!!!!

^_^


6 0
3 years ago
Please help me I will give you the brain thing and extra points. (image below) 18/30
uranmaximum [27]

Answer:

B

Step-by-step explanation:

sjsjsjsjsjjsjsjsjdjdjjdjdjs

6 0
3 years ago
Read 2 more answers
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