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Lubov Fominskaja [6]
3 years ago
13

Solve the system of equations given below. y - 15 = 3 -2.1 + 5y = -3

Mathematics
1 answer:
EastWind [94]3 years ago
3 0

Answer:

1) y=18

2)y=-0.18

Step-by-step explanation:

1) y-15=3. Add 15 on both sides.

y=18

2)-2.1+5y=-3. Add 2.1 on both sides

5y=-0.9. Divide 5 on both sides

y=-0.18

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2 years ago
HELP PLEASE!!!!!!!!!!!!!!!!!!!!!!
AleksAgata [21]
Your answer would be b.2 

6 0
3 years ago
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Pleaseee help!
user100 [1]

Step-by-step explanation:

f(3)=?

f(x)=2x+5

put x=3,

f(3)=2(3)+5=6+5=11

------------

g(2)=?

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put x=2,

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-----------------

g(f(-1))=?

g(x)=x^2-3

and f(-1)=2(-1)+5= -2+5=3

so g(f(-1))=3^2-3=9-3=6

----------------

f(g(-1))=?

f(x)=2x+5

g(x)=g(-1)=(-1)^2-3=1-3= -2

f(g(-1))=2(-2)+5= -4+5=1

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g(f(x))=?

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put x=f(x),

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7 0
3 years ago
a football match,the ratio of children to adults is 2:7.there are 2700 people int he crowd. each adult ticket is £8 each child t
marusya05 [52]

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

We can write ratios to solve

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