Answer:
18x-3
Step-by-step explanation:
f(x)= 3x + 10x
g(x)=5x - 3
f(x)+g(x) = 3x + 10x + 5x - 3
Combine like terms
= 18x -3
Answer:
(3/2x)+14
Step-by-step explanation:
Answer:
B. In slope-intercept form, the slope is − 7/9. These values are A and B, but with the opposite sign, so the slope of the line from the equation in standard form is − A/B.
Step-by-step explanation:
<u>Let's convert the standard equation into slope-intercept form:</u>
- Ax + By = C ⇒ subtract Ax from both sides
- By = -Ax + C ⇒ divide both sides by B
- y = -A/Bx + C/B ⇒ converted to slope- intercept form
As we see the slope is -A/B
<u>The equation 7x + 9y = 14 is converted as:</u>
- y = -7/9x + 14/9, where the slope is -7/9
<u>Looking at the answer options and the correct one is option B, where both identification of slopes match.</u>
- B. In slope-intercept form, the slope is − 7/9. These values are A and B, but with the opposite sign, so the slope of the line from the equation in standard form is − A/B.
Answer:
Step-by-step explanation:
Let L represent the length of the rectangular porch.
Let W represent the width of the rectangular porch.
The area of the rectangular porch is expressed as LW.
Bills new porch is rectangular with an area of 50 square feet. Therefore,
LW = 50 - - - - - - - - 1
if the length is two times the width, it means that
L = 2W
Substituting L = 2W into equation 1, it becomes
2W × W = 50
2W^2 = 50
W^2 = 50/2 = 25
W = √25 = 5
LW = 50
5L = 50
L = 50/5 = 10
The perimeter of he rectangle is
Perimeter = 2(L + W)
Perimeter = 2(10 + 5) = 2 × 15
Perimeter = 30 feet
