B.) 2
you have to multiply by 2 to get from a to b
<span><span>56 $ .... 7 hours of work
<span>x $
... 1 hour of work</span>
<span>We would
like to know how much money does Alexander's job pay per one hour (x $). You can calculate this in the following way:</span>
56 * 1 = 7 * x<span> /7</span>
x
= 56/7
x
= 8 $
<span>The
result is 8 $.</span></span></span>
Step-by-step explanation:
f'(x) = 6x-12
in vertex : f'(x) = 0
6x-12 =0 => x=2
f(2) = 3 ( 2² ) -12 (2 ) +1 = -11
vertex ( 2 , -11 )
Okay. So, the line shaded would have to be left to 2, because it's less than 2. In that case, A and C are eliminated, because they shade to the right, not left. B and D do this, but wait. The dotted line has to represent the less than, because the one that's fully filled in would mean less than or equal to. B would make sense, because the line is dotted and that makes an inequality symbol of less than, not less than or equal to. The answer is B.
Note: When the sign is < or >, the line on the graph is dotted. If the sign is <= or >=, then the line on the graph is solid.
First, 45 is the total number of students. So you have to add the ratio: 2+3=5. Since you are finding the number of sixth graders, you need to use the ratio 2.
Sixth graders : All = x : 45
2 : 5 = x : 45
You could change this to fractions and solve it.
2/5 = x/45
x = 18
So there are 18 sixth graders.