Solve for al (21 – 3a) = 6 - a

2 answers:

8 0

The answer is 7.5

To get this answer you have to add like terms first. I added 3a so i ended up 21=6+2a

Subtract 6

15=2a now divide by 2

Answer is 7.5

Alecsey [184]3 years ago

3 0

Answer:

7.5

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

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Which values for x and y make the statement (x + 5)(y - 6) = 0 true?

-BARSIC- [3]

$||Solving \ for \ x. ||$ 

$(x + 5)(y - 6) = 0$

$(x + 5)(y - 6) = 0 :x$

$
x+5=0
 
$ $|Divide \ both \ sides \ by \ y-6|$

$
x=-5
 
$ $|Subtract \ 5 \ from \ both \ sides|$

$||Solving \ for \ y. ||$

$
y-6=0
 
$ $|Divide \ both \ sides \ by \ x+5|$

$
y=6
 
$

$Solution =\ \textgreater \ x = -5, y = 6$

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3 years ago

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enot [183]

x=75°

We know that ∠EFG=∠ABF because they are corresponding angles.

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x+105=180

x=75°

6 0

3 years ago

A rectangular garden measures 25ft by 38ft. Surrounding (and bordering) the garden is a path 2ft wide. Find the area of this pat

lesya [120]

So as the path adds an extra 2 feet to each side I would start this by adding two feet to each part (so 25+2 x 38+2) which leaves you with 27ft by 40ft. Multiply to find this total area, which results in 1080. Now, you want to remove the actual area of the garden itself as this is not part of the path. So 25x38=950. Subtract 1080 by 950. This gives you just the area of the gardens path which would be $130 feet^{2}$