Answer:
Step-by-step explanation:
<u><em># 21.</em></u>
÷ ( - 0.35 ) = - ÷ 
= - ÷ 
= - × 
= - 
<em>(B).</em>
<u><em># 22.</em></u>
( 
- 
) ÷ ( - 2.5 )
= 
= 3.5
= 
= 
= 9.75
( 3.5 - 9.75 ) ÷ ( - 2.5 ) = ( - 6.25 ) ÷ ( - 2.5 ) = 2.5 <em>(D).</em>
Answer:
a. 6, b. 99, c. 63
Step-by-step explanation:
A) The function s(t) is in the vertex form. The standard vertex form is a(x-h)+k where the vertex is (h,k). The vertex is the highest (or lowest in some cases) point of the graph, so if we use s(t) to get the vertex we get that h=6 and k=99. This means that for a student to get a perfect score they need to study 6 hours
B) We can just take the k value from the first question because that's the highest value for s(t), so the highest score will be 99
C) For this one just plug in 0 for time, so -(0-6)^2+99. This equals -(-6)^2+99, which equals 99-36 =63
There's a 2/15 chance I think. 2 toppings out of 15, so 2/15. This is approximately 13% chance.
Answer:
Square numbers
Step-by-step explanation:
if 1 is squared, you get 1.
if 2 is squared, you get 4.
if 3 is squared, you get 9.
if 4 is squared, you get 16.
And thus square numbers.
The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42.
