Answer:
The third choice.
Step-by-step explanation:
This is a linear function.
The equation is y = (x - 5)(5x + 4) - 5x^2.
y = 5x^2 - 25x + 4x - 20 - 5x^2
y = 5x^2 - 5x^2 - 21x - 20
y = -21x - 20
That means this is a linear function, with a linear term of -21x and constant term of -20.
Hope this helps!
Answer:
$34.88
Step-by-step explanation:
If the discount is 20%, then the sale price is 80% of the full (original) cost:
0.80($40.00) = $32.
Sam has to pay 9% sales tax on this $32. The total cost of his order would then be 1.09($32) = $34.88. If desired, you could write this as the equivalent $32 + 0.09($32).
Answer:
See below.
Step-by-step explanation:
10/(20/4*5/5)*8-2
10/(5*1)*8-2
10/5*8-2
2*8-2
16-2
14
-hope it helps
The answer is: B. 11
Explanation:
1. The area of a rectangle is:
Where is the length and is the width.
2. The length of the rectangular-shaped deck is 5 meters longer than its width, therefore:
3. You must substitute this into :
4. Now you must solve for the width. You can use the Quadratic formula, which is:
Where:
5. Subsitute values:
6. Then, the lenght is:
Answer:
Amount of fencing: 32 feet
Amount of soil: 63 square feet
Step-by-step explanation:
Fencing: In a rectangle, the opposite side is the same length. So we do:
9+7+9+7 = <u>32 feet</u>
Soil: The soil is the area. Area is equal to length times width. Length is 9 and width is 7, so we do:
9 x 7 = <u>63 feet squared</u>