Samuel exercises for 100 minutes each day. Or in other words, 1 hour and 40 minutes.
Answer:
24 cats: 28 dogs
Step-by-step explanation:
28/21 = 1.33
18 x 1.33 = 24
Get x all alone on its own side:
x=16+5
x=21
There are no zeroes for an expression, only for equations.
Assuming equation to be
<span>−7x^2 − 91x − 280=0
-7(x^2+13x+40)=0
-7(x+8)(x+5)=0
by the zero product properties,
x+8=0 => x=-8
or
x+5=0 => x=-5</span>
