The area of a rectangular garden in square feet can be represented by z² - 10z +21. The length is z - 7 feet. You have been hired to fertilize the
garden. Recall that the area of the garden is z² - 10z +21. If z = 20 and the fertilizer costs $0.27 per square foot, how much it cost to fertilize
the garden?
Answer:
$ 59.67
Step-by-step explanation:
The area of a rectangular garden in square feet can be represented by z² - 10z +21 square feet
If z = 20
Therefore:
The area of the rectangular garden is:
20² - 10 × 20 + 21
400 - 200 + 21
= 221 square feet
The fertilizer costs $0.27 per square foot, how much it cost to fertilize
the garden?
The cost of fertilize the garden is calculated as:
1 square feet = $0.27
221 square feet = x
Cross Multiply
221 square feet × $0.27
=$ 59.67
Answer:
(x + 6)(x + 8)
Step-by-step explanation:
Consider the factors of the constant term (48 ) which sum to give the coefficient of the x- term (14 )
The factors are + 6 and + 8
since 6 × 8 = 48 and 6 + 8 = 14
x² + 14x + 48 = (x + 6)(x + 8) ← in factored form
-2/4
Move down 2 and to the right 4 times
Answer:
-2
Step-by-step explanation:
We usually start measuring the height from the ground, so basically the positive direction is above the ground, for example 2 is the best number which represents 2m above the ground.
So the negative sign represents the depth below the ground.
Answer:
Any equation shown in the explanation
Step-by-step explanation:
Hello!
Combining like terms means combining terms with the same variables.
So combing all x's, all y's, all numbers, etc.
2/3x - 9 - 2x + 2 = 1
combine the x's
-1 1/3 x - 9 + 2 = 1
combine normal numbers
-1 1/3 x - 7 = 1
Add 7 to both sides
-1 1/3x = 8
Make mixed number into improper fraction
-4/3x = 8
Multiply both sides by 3
-4x = 24
Divide both sides by -4
x = -6
The answer would be any of the equation I showed above
Hope this helps!
