<span>2x^2 - 8x - 90
= 2 (x^2 - 4x - 45)
= 2 (x - 9)(x + 5)
so
x - 9 = 0; x = 9
x + 5 = 0; x = -5
solutions -5 and 9
answer
</span><span>B)-5</span>
<span>D)9</span>
Answer:
f(x) = 10:
f(x) = 50:
f(x) = 120:
Step-by-step explanation:
Write out the whole function using given information
f(x) = [10, 50, or 120]
Domain/y = 0.1x + 5
Substitute the possible values for x into the domain equation and solve
f(x) = 10: 0.1(10) + 5 = 1 + 5 = 6
f(x) = 50: 0.1(50) + 5 = 5 + 5 = 10
f(x) = 120: 0.1(120) + 5 = 12 + 5 = 17
Final answers:
f(x) = 10:
f(x) = 50:
f(x) = 120:
Hope this helps :)
To answer this you will need to find out how many quarts there are in 5 gallons. You can use the conversion of 4 quarts in 1 gallon to find out how many quarts there are in 5 gallons.
4 qts/1 gal = 20 qts/5 gal
Here will need to fill the container 20 times to fill the aquarium.
If the 36=1 in 1:3 ;
1:3 = 1 x 36:3 x 36 =36:108
so you would need 108 cups of lemon juice.
If the 36=3 ;
36/3=12
1:3 = 1 x 12: 3 x 12 = 12:36
so you would need 12 cups of lemon juice.
Answer:
A
Step-by-step explanation:
Each standard deviation from the mean covers 34.1 %
2 x 34.1 = 68.2% or .682