Answer: 4r - 9 > 7, r= 4
Step-by-step explanation: Add 9, 4r > 16, divide by 4 to get the value of ‘r’ by itself
Answer: 242 students do not like football or baseball
Step-by-step explanation:
The total number of students that were surveyed about their preferences of sports is 412. The Venn diagram is shown in the attached photo.
If 45 students like both sports, then the number of students that like football only would be
115 - 45 = 70
Also, the number of students that like baseball only would be
100 - 45 = 55
The number if students that like at least one of the sports is
70 + 55 + 45 = 170
Therefore, the number of students that do not like football or baseball would be
412 - 170 = 242
to graph f (x) + k, move the graph k units up..your answer should be;
y = x ^ 2 + 5/2
Answer:
Roberto had 128 baseball cards originally
Step-by-step explanation:
What you need to do is multiply the individual number of cards that he gave to each friend by the number of friends. In this case, 32 baseball cards and 4 friends. Therefore, the equation would be 32 x 4 = 128
Hope this helps :)
<span>Dr. Graham currently has two acid solutions.
60% acid AND 20% acid </span>
Dr. Graham needs 30 L of a 50% acid solution
We set up 2 equations in which s = 60% acid and t = 20% acid
A) s + t = 30
B) .60s + .20t = (.50 * 30)
We multiply equation A by -.20
A) = -.20s -.20t = -6 then we add it to B)
B) .60s + .20t = 15
.40s = 9
s = 22.5
t = 7.5
So, she needs to mix 22.5 liters of 60% acid with 7.5 liters of 20% acid.
Source:
http://1728.org/mixture.htm
