Answer:
(x+1) (7x - 4)
Step-by-step explanation:
7x² + 3x - 4
Use the diamond...
7 times -4 equals -28 and 7 plus -4 = 3
Use factor by grouping b/c a does not equal 1
7x² + 7x - 4x - 4
7x(x + 1) -4(x + 1)
(x+1) (7x - 4)
Remember , a fraction represents the parts of a unit. It is proper when the numerator is less than the denominator; and improper when the numerator is greater than the denominator. Improper fractions can be written as a mixed number in which the integer part and the corresponding proper fraction appear.
Sure hope this helps
Answer:
13 hours
Step-by-step explanation:
Since Shawn mows lawns at a rate of 5 dollars an hour, if he mows for t hours, he earns 5t dollars. Also, he gets 10 dollars weekly allowance from his parents. Thus, the total amount he earns per week is thus 10 + 5t.
Since he needs to earn enough to buy 75 dollars pair of basketball shoes, the amount he earns must equal the price of the shoes. So,
10 + 5t = 75
We now solve for t to find the amount of hours if takes him to earn enough to buy the shoes.
So,
10 + 5t = 75
Subtracting 10 from both sides, we have
10 - 10 + 5t = 75 - 10
5t = 65
dividing both sides by 5, we have
t = 65/5
t = 13 hours
So, it takes Shawn 13 hours to earn enough to buy the shoes.
A cube has a square cross-section
<span>ie area is length x breadth = x^2 </span>
<span>A cylinder has a circular cross-section </span>
<span>ie area is pi * r^2
</span>
Answer:
Step-by-step explanation:
Given
Required
Simplify
Express 72 as 36 * 2
Express 
as 
Reorder
Split:
Simplify each term
