3 years ago

4+2d-4d Help!! I need to finish this homework!

Mathematics

1 answer:

Katena32 [7]3 years ago

4 0

4+2d-4d = 4+-2d because with polynomials, you can subtract or add different multiples of the same variable

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There are a total of 122 countries in Africa, Europe, and North America (as of 2003). Europe has twice as many countries as Nort

Eddi Din [679]

A + E + N = 122
E = 2N
A = 7 + E....A = 7 + 2N

(7 + 2N) + 2N + N = 122
5N + 7 = 122
5N = 122 - 7
5N = 115
N = 115/5
N = 23 <== North America

E = 2N
E = 2(23)
E = 46 <== Europe

A = 7 + E
A = 7 + 46
A = 53 <=== Africa

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3 years ago

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4 years ago

Write an equation of the parallel to 5x-6y=10 through the point (-6,-1) show all work

ioda

5x-6y=10

-5x -5x

-6y=-5x + 10

y-yV1=m(x-xV1)

y+1 = -5 (x+6)

destribute the -5 to the parinthease.

y+1 = -5x - 30

-1 - 1

y= -5x -31

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4 years ago

Miss Becky baked some cookies. Then she brought 25% of them to her company. At the company, she gave 40% of what she brought to

ch4aika [34]

Answer:

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3 years ago

Solve the systems of equations 9x+5y=41 and x+y=9 by combining the equations

Sholpan [36]

Step-by-step explanation:

multiplying the 2nd eqn by 9 we get,

9x+9y=81

then,subtracting 1st and 2nd eqn

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- - -

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0. -4y=-40

we get y = 10

then we get x=9-y

x=9-10

x= -1

so x is -1 and y is 10

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3 years ago