Answer: 8mph
Step-by-step explanation:
If Marco bicycles 20 miles in 2.5 hours. divide 20 by 2.5 to get the average rate.
20/2.5 = 8
(Don't forget to add units)
8mph
Answer:
7
Step-by-step explanation:
Move the -8 to the other side and use the rule change side change sign:
2x=6+8
2x=14
Move the 2 and convert the multiplication(as its 2×x ) into division:
x= 14÷2
x=7
Answer:
640 units squared
Step-by-step explanation:
First, the formula of a trapezoid is (a + b) x 2 divided by h
So, 40 + 24 = 64
64 x 20 = 1280
and 1280/2 = 640
Hope this helps!
Answer:
x = 1 , x = 6
Step-by-step explanation:
2x² - 17x + 31 = (x - 5)² ← expand using FOIL
2x² - 17x + 31 = x² - 10x + 25 ( subtract x² - 10x + 25 from both sides )
x² - 7x + 6 = 0 ← in standard form
(x - 1)(x - 6) = 0 ← in factored form
equate each factor to zero and solve for x
x - 1 = 0 ⇒ x = 1
x - 6 = 0 ⇒ x = 6
