The answer is <span>10 units
</span>
The diameter of the cylinder (d) is the twice of its radius (r): d = 2r
The volume (V) of the cylinder with radius r and height h is:
V = π r² h
We have:
d = 2r
r = ?
h = 7
π = 3.14
V = 175π
175π = π * r² * 7
175 = r² * 7
r² = 175/7
r² = 25
r = √25
r = 5
d = 2r
d = 2 * 5
d = 10
Answer:
C
Step-by-step explanation:
CMF is easy though.
There are no negative signs. so A and B is excluded
Divide the x+5 in the trinomial so u can get the CMF of the equation
694
you just subtract 1212 by 518
694+518=1212
Answer:
4.92 hours
Step-by-step explanation:
Let x = the number of hours left to work. I am converting the fraction to a decimal to make it easier to work with.
x + 3 + 5 + 2.08 = 15
Move constants to the right
x = 15 - 3 - 5 - 2.08
Do the math
x= 4.92
If the discriminant is negative no real solution exists.
If the discriminant is equal to 0 only one real solution exists.
If the discriminant is positive 2 real solutions exist.
The discriminant:
D = b² - 4 a c
1 ) - 7 x² + 6 x + 3 = 0
D = 6² - 4 · ( - 7 ) · 3 = 36 + 84 = 120 > 0
Answer: b) two solutions
2 ) - 8 x² - 8 x - 2 = 0
D = ( - 8 )² - 4 · ( - 8 ) · ( - 2 ) = 64 - 64 = 0
Answer: a ) one solution
