Answer:
A
Step-by-step explanation:
Given
y = 2x² - 3x + 1
To find the zeros let y = 0, that is
2x² - 3x + 1 = 0
Consider the factors of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term.
product = 2 × 1 = 2 and sum = - 3
The factors are - 2 and - 1
Use these factors to split the x- term
2x² - 2x - x + 1 = 0 ( factor the first/second and third/fourth terms )
2x(x - 1) - 1(x - 1) = 0 ← factor out (x - 1) from each term
(x - 1)(2x - 1) = 0
Equate each factor to zero and solve for x
2x - 1 = 0 ⇒ 2x = 1 ⇒ x =
x - 1 = 0 ⇒ x = 1
Answer:
Step-by-step explanation:
step 1
Find the volume of the square pyramid
The volume is equal to
where
substitute
step 2
Find the volume of one wax block
The volume of a cube is equal to
where
substitute
step 3
Find out the number of wax blocks needed to make the candle
Divide the volume of the square pyramid by the volume of the wax block
so
Answer:
Answer:
11.02-9.91= 1.11
Step-by-step explanation:
|-11.02| - |-9.91| (First solve in absolute)
11.02 - 9.91 (any values outside absolute becomes positive)
1.11
Step-by-step explanation:
3 1/5 = y - 12/25
Make 3 1/5 an improper fraction.
16/5 = y - 12/25
Add 12/25 to both sides.
16/5 + 12/25 = y
Make a common denominator.
80/25 + 12 / 25 = y
92 / 25 = y
3 17/25 = y
Hope this helps!
Answer:
22.14
Step-by-step explanation:
Using the Pythagorean Theorem:
a^2 + b^2 = c^2
21^2 + 7^2 = c^2
441 + 49 = c^2
490 = c^2 (square root both sides so c^2 becomes c)
c = 22.13594363 (round to hundredths)
c = 22.14