Answer:
use photo math or mathpapa to solve the equations
Step-by-step explanation:
The quadratic formula is 
So the solution for k is 16.
Hope that helps!
Answer:
2.0
Step-by-step explanation:
2.0 is the nearest 10th it's at the nearest 10th.
<span>use an expression
s = speed of the slower car
then
(s+20) = speed of the faster car
When they meet is after 400 miles
Write distance equation
slow car d + fast car d = 400 mi
4s + 4(s+20) = 400
8s + 80 = 400
8s = 400 - 80
8s = 320
s = 40 m/H</span>
Nothing "weighs" 56.7 grams. "Gram" is a unit of mass, not force or weight.
On Earth, 28.35 grams of mass weigh about 1 ounce .
1 dozen of anything = 12 of them
If each tennis ball has 56.7 grams of mass, then a dozen of them
have
(12) x (56.7) = 680.4 grams of mass .
Their weight is (680.4 grams) x (1 ounce / 28.35 grams) =
(680.4 / 28.35) = 24 ounces.
That's 1.5 pounds.
