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Sedbober [7]
2 years ago
6

What is the justification for each step in the solution of the equation? 4(4x+6)−7=77−4x

Mathematics
1 answer:
zepelin [54]2 years ago
6 0

Answer:

20x + 17 = 77    --> Addition Property of Equality:

You are adding (Addition Property) 4x to both sides of the equal sign (Equality).

20x = 60           --> Subtraction Property of Equality:

You subtracted (Subtraction Property) 17 from both sides of the equal sign (Equality).

x = 3                  --> Division Property of Equality:

You divided (Division Property) 20 from both sides of the equal sign (Equality) to completely isolate the variable x.

~

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If the area of a circle is 58 square feet, find the circumference
Blizzard [7]

Answer:

C≈27 feet

Step-by-step explanation:

A=πr²

A/π=r²

√A/π =r or –√A/π=r (refused)

then r =√(A/π) =√(58/π) =4.297829403 feet

C=2πr=2π(4.297829403)=27.00405856≈27 feet

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3 years ago
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If you bought a stock last year for a price of $67, and it has risen 12% since then, how much is the stock worth now, to the nea
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Answer:$75.04

Step-by-step explanation:

last year price=$67

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12/100 x 67

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Since it has risen by 12%

There new price is 67+8.04=75.04

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3 years ago
What adds to 12 and multiplies to 8
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3 years ago
The diagram below shows scalene triangle JKL. Triangle J K L. Side L K extends to point H to form exterior angle J K H. Which is
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Answer:

Step-by-step explanation:

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True.

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True.  The sum of all interior angles = 180

  • Measure of angle J K H = measure of angle J L K =

Can't tell from info given.  

  • Measure of angle J K L + measure of angle J L K = 90 degrees

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Answer:

  • m∠ABC = 15°

Step-by-step explanation:

<u>Given</u>

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Add two more parallel lines passing through points C and D.

Consider alternate interior angles formed by the four parallel lines.

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3 years ago
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