Answer:
Here
Step-by-step explanation:
length = x
width = 2x - 3
Perimeter = 2length + 2 width
2x + 2(2x - 3) = 42
2x + 4x - 6 =42
6x - 6 = 42
Add 6 to both sides
6x = 48
Divide both sides by 6
x = 8
Length = 8 inches
Width = 2(8) - 3 = 16-3 = 13 inches
Answer:

Step-by-step explanation:
we know that
In the right triangle QRS
----> by SOH (opposite side divided by the hypotenuse)
substitute the given values

solve for SQ

So you would do 5*2x +5*-8 +15=-15
Then simplify so it would be 10x + -40 + 15 = -15
Then add -40 and 15 together
Then it would be 10x + -25 = -15
Then add 25 to -25 and -15
So it would be 10x = 10
And then divide 10 from 10 with would be 1 so x = 1
<h3>Answer:</h3>
56 ft by 40 ft
<h3>Explanation:</h3>
If we let x represent the multiplier for the ratio, then the perimeter is ...
... 2 × (7x +5x) = 24x = 192 ft.
Dividing by 24 gives
... x = 8 ft.
The dimensions are 7 and 5 times this multiplier, or ...
... 7×8 ft = 56 ft . . . . by . . . . 5×8 ft = 40 ft
Answer:

General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
- Slope Formula:

Step-by-step explanation:
<u>Step 1: Define</u>
Point (-12, 1)
Point (4, 1)
<u>Step 2: Find slope </u><em><u>m</u></em>
- Substitute [Slope Formula]:

- Subtract/Add:

- Divide:
