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Tju [1.3M]
3 years ago
11

Solve: 2a-3=9 Solve: -3(b+2)= -9

Mathematics
2 answers:
Elina [12.6K]3 years ago
8 0
2a - 3 = 9......
the first thing you would have to do is add a 3 on both sides of the equation.
2a - 3 =9        ------>    2a = 12
  +3      +3
Next, divide the 2 out from the a.
2a = 12    ---------> a = 6
/2       2/
_________________________________________________
-3(b + 2) = -9
multiply the -3 in the parentheses

-3(b + 2) = -9 -------> -3b - 6 = -9
Add a 6 to both sides
-3b - 6 = -9 --------------> -3b = -3
     +6      +6  
Lastly divide -3 from both sides
-3b = -3  ----------------------> b = 1
/-3     /-3





Softa [21]3 years ago
3 0
The Solution are : a=3.
b=1.
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204878 that the answer
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4 years ago
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100 points t who answers first and if answered right u will get brainiest ok
Grace [21]

Answer:

side c = 150 feet of flowers

Area = 5400 feet squared

concert question:

The converse of the Pythagorean theorem can help you determine whether the roped off area is in the shape of a right triangle because you use the side lengths of each square and enter them into the equation, and if the equation is true, then it is a right triangle

Concession stand question:

The school banner can fit across the length of the concession stand

the following information is missing

The length if the sides: c is 50 feet long, b is 40 foot long, and a is 30-foot long.

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8 0
3 years ago
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What is the ratio of one hour to 600 seconds?
Marat540 [252]

Answer:

6:1

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4 years ago
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HELP PLEASE
Hoochie [10]
If you had values instead of algebraic expressions, you would find the area of the patio and subtract that from the area of the yard. Even though you don't have values, you can still find the area and subtract by expanding and simplifying:
(8x + 2)(6x + 3)
8x × 6x = 48x²
8x × 3 = 24x
2 × 6x = 12x
2 × 3 = 6
So you get 48x² + 36x + 6 as your area of the yard

(x + 5)(3x + 1)
x × 3x = 3x²
x × 1 = x
5 × 3x = 15x
5 × 1 = 5
So the area of the patio is 3x² + 16x + 5

(48x² + 36x + 6) - (3x² + 16x + 5)
48x² - 3x² = 45x²
36x - 16x = 20x
6 - 5 = 1

So your answer is D. 45x² + 20x + 1. I hope this helps!

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