3 years ago

Jenny solved the equation 1-(2x+4)=-4x+5 what her error

Mathematics

1 answer:

viva [34]3 years ago

7 0

Step-by-step explanation:

1-(2x+4)= 1-2x-4= -2x-3

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An alloy is composed of nickel, zinc, and copper in a ratio of 7:2:9. How many kilograms of each metal are needed to make 3.6 kg

ivolga24 [154]

Answer:

Nickel= 1.8 kg

Zinc= 0.4 kg

Copper= 1.8 kg

Step-by-step explanation:

7:2:9

7=nickel

2=zinc

9=copper

7+2+9=18

18×2=36

7×2=14 2×2=4 9×2=18

Divide by 10

14÷10=1.4 4÷10=0.4 18÷10=1.8

1.8+1.4+0.4= 3.6

1.8=nickel

0.4=zinc

1.8=copper

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3 years ago

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Lera25 [3.4K]

Answer:

this is what i found

Factor

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asambeis [7]

Answer:

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Step-by-step explanation:

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3 years ago

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(84x - 69y) - (65x + 34y)

Svetach [21]

(84x - 69y) - (65x + 34y)

Remove the parenthesis and combine the like terms:

84x - 65x = 19x

-69y - 34y = -103y

Combine for final answer:

19x -103y

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3 years ago

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KiRa [710]

Answer:

Step-by-step explanation:

Angles EBC and EDC are the same. and straight lines equal 180

so now to solve for x

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