a. 3.7 m
b. 2.8 m
c. 5.6 m
d. 11.2 m
PLEASE HURRY!! I HAVE LIMITED TIME!! :)
Answer:
c. 5.6m
Step-by-step explanation:
pi x 8 x 80/360 = 5.58..
round to 1 d.p. = 5.6
equation in ax^2 + bx + c = 0 form. Then find the value of the discriminant to support your
answer.
9. Think of another quadratic equation that has one (1) real number solution. Write the
equation in ax^2 + bx + c = 0 form. Then find the value of the discriminant to support your
answer.
10. Think of another quadratic equation that has no (0) real number solutions. Write the
equation in ax^2 + bx + c = 0 form. Then find the value of the discriminant to support your
answer.
–32 + = 2(x2 + 10x + 25)
18 = 2(x + 5)2
9 = (x + 5)2
± = x + 5
x = –2 or x =
Answer:
x = - 2 or x = - 8
Step-by-step explanation:
Given
2(x² + 10x) = - 32 ( divide both sides by 2 )
x² + 10x = - 16
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(5)x + 25 = - 16 + 25
(x + 5)² = 9 ( take the square root of both sides )
x + 5 = ± = ± 3 ( subtract 5 from both sides )
x = - 5 ± 3, thus
x = - 5 + 3 = - 2 or x = - 5 - 3 = - 8
Roxanne has 1/2 as many beads as Sherie. The number of beads Sherie has is 4/5 that of Marcos. Marcos has 165 beads. How many more beads does Marcos have than Roxanne.