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Minchanka [31]
2 years ago
15

Solve using Combining Like Terms (CLT) 7 + 4d + 5d = 7d + 3

Mathematics
1 answer:
Vesnalui [34]2 years ago
3 0

Answer:

d= -2

Step-by-step explanation:

7 + 4d + 5d = 7d + 3

Combine like terms

7+9d = 7d+3

Subtract 7d from each side

7+9d-7d = 7d-7d+3

2d +7 = 3

Subtract 7 from each side

2d+7-7 = 3-7

2d = -4

Divide each side by 2

2d/2 = -4/2

d = -2

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A) -13

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x^2-13x+12=0

x^2-x-12x+12=0

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The 6 elephants at the zoo have a combined weight of 11,894 pounds. About how much does each elephant weigh?
Alisiya [41]

Answer:

1982.33 pounds

Step-by-step explanation:

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2 years ago
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Please Help, it’s needed.
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Answer:

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3 years ago
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1 + (-2/3) - (9/2) evaluate
Elina [12.6K]

Use the least common denominator(LCD) to solve this equation:

1 + (-2/3) - (9/2)

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Put it back into the equation:

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Then, take it out of the parenthesis:

6/6 - 4/6 - 27/6

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7 0
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Mia and holly can clean their room in 20 minutes, working together. Working alone, mia can clean the room in 30. How long would
vladimir2022 [97]

Answer:  Holly would take 60 minutes to clean alone.

Step-by-step explanation:

Let t = Time taken by Holly to clean alone.

Given: Time taken by Mia to clean alone = 30 minutes

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Then,

\dfrac1t+\dfrac{1}{30}=\dfrac{1}{20}\\\\\Rightarrow\ \dfrac{1}{t}=\dfrac{1}{20}-\dfrac{1}{30}\\\\\Rightarrow\ \dfrac{1}{t}=\dfrac{3-2}{60}\\\\\Rightarrow\ \dfrac{1}{t}=\dfrac{1}{60}\\\\\Rightarrow\ t= 60

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3 years ago
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