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padilas [110]
2 years ago
8

Solve the equation for a.

Mathematics
1 answer:
nataly862011 [7]2 years ago
7 0

Answer:

a=-7.68

Step-by-step explanation:

3a+13.61=-9.43

               -13.61

_____________

               -23.04

3a=-23.04

-23.04/3= -7.68

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MARKING BRAINLIST! A blu-ray has a circumference of 25.12 inches. What is the radius of the blu-ray?
Genrish500 [490]

Answer: 3.99797217..

Step-by-step explanation:

formula for the circumference is pi x diameter

divide circumference by pi

25.12/pi = 7.9959443...

divide that by two to get the radius which would be 3.997972...

6 0
3 years ago
Please help .god bless you
zhenek [66]

Answer:Area of the lawn is 1725 ft^2

Step-by-step explanation:

The yard is in the shape of a trapezoid. The area of the lawn can be determined by finding the area of the trapezoid. The formula for determining the area of a trapezoid is expressed as

Area of trapezoid =

1/2(a + b)h

Where

a is the length of one of the parallel sides of the trapezoid

b is the length of the other parallel side of the trapezoid.

h is the perpendicular height of the the trapezoid.

From the diagram,

a = 50 feet

b = 65 feet

h = 30 feet

Area of the lawn = 1/2(50 + 65)× 30

= 1/2 × 115 × 30 = 1725 ft^2

7 0
2 years ago
Evaluate the following expression: (-5)(6) + (-6) ÷ (-3). Remember to show your work
Vinil7 [7]

Answer:

-28

Step-by-step explanation:

(-5)(6) + (-6) ÷ (-3) =

-30 + (-6) ÷ (-3) =

-30 + 2 =

-28

<em>Hope that helps! :)</em>

<em></em>

<em>-Aphrodite</em>

7 0
2 years ago
Read 2 more answers
Match the following items.
IgorLugansk [536]

Answer:

#1 is 3x + 4 =-17 #2 is 3x =-21 #3 is x = -7 #4 is 2x + x +4 = -17

Step-by-step explanation:

#1 gives you the problem ready to be worked out. #2 all you need to do to finish it is divide both sides by 3. #3 the answer is already there. #4 You need to combine the like terms then solve the problem.

3 0
3 years ago
I need to solve this equation by completing the square and i'm REALLY struggling!!! :( someone please please help:
Blababa [14]
It's just x - 10 and thats it. 
3 0
2 years ago
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