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3 years ago

-308=4A-9(8+7A) help !!

Mathematics

2 answers:

Molodets [167]3 years ago

8 0

Answer: a=-1

Step-by-step explanation:

Rom4ik [11]3 years ago

6 0

<h3>Answer: A = 4</h3>

=======================================

Work Shown:

-308=4A-9(8+7A)

-308=4A-9(8)-9(7A) ... distribute

-308=4A-72-63A .... multiply

-308=-72-59A ....combine like terms

-308+72=-72-59A+72 ... add 72 to both sides

-236 = -59A

-59A = -236

-59A/(-59) = -236/(-59) ... divide both sides by -59

A = 4

-----

Explanation:

The idea is to first distribute and combine like terms. From there you follow PEMDAS in reverse to isolate A fully. That's why I added 72 to both sides to undo the subtraction, and divided both sides by -59 to undo the multiplication.

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3 years ago

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3 years ago

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Answer:

Step-by-step explanation:

5×sqrt(8)×3×sqrt(4) = 15×sqrt(8)×sqrt(4) = 15×sqrt(8)×2 =

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4 0

3 years ago

Please help, need to find x and y :))

blondinia [14]

Answer:

x=14

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Step-by-step explanation:

Using (9x+14) + (3x-2) = 180, we can solve this equation.

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3 years ago

Read 2 more answers

If X = 2 centimeters, Y = 5 centimeters, and Z = 5 centimeters, what is the area of the object?

Elena L [17]

Answer: $35 cm^2$

Step-by-step explanation:

Area of trapezium =

2X = 2 + 2 = 4 cm

2Z = 5 + 5 = 10 cm

Y = 5 cm

$\dfrac{ \left( 4+10 \right) }{ 2 } \times 5$

|--------> 35 $cm^2$

6 0

1 year ago