Answer:
Chicago marathon runners
Step-by-step explanation:
Due to the strict qualifying time, the runners of the Boston marathon are going to very prepared, and quite close in their times. Since they are going to be close, the standard deviation is expected to be small.
Otherwise, in the Chicago marathon, anyone can run. This means that along with the professional runners, who are going to be very prepared, other unprepared runners will compete, and they are going to take a long time to complete the race, adding variation to the finishing times. The standard deviation is the square root of the variance, so since the variance for the Chicago marathon will be higher, the standard deviation also will
Given that the cost of b burgers and h hot dogs is given by 3.25b + 2h.
Therefore, the cost of 4 burgers and 6 hot dogs is given by 3.25(4) + 2(6) = 13 + 12 = $25.
Answer:
-0.69444 or about -0.69 or as a fraction it would be -25/36
Step-by-step explanation:
You can change 2 11/12 to and improper fraction, 35/12. You can also change -4 1/5 to an improper fraction, -21/5. Then you need to flip -21/5 to -5/21. You can work it out to get an improper fraction, to then follow and get -25/36 or -0.69.
Answer:
The graph in the attached figure
Step-by-step explanation:
we have
y-x> 0 -----> inequality A
y> x
The solution of the inequality A is the shaded area above the dashed line y=x
x+1<0 ----> inequality B
x < -1
The solution of the inequality B is the shaded area at the left of the dashed line x=-1 (open circle)
therefore
The solution of the system of inequalities in the attached figure
Answer:
- a = 65°
- b = 25°
- c = 25°
- d = 75°
Step-by-step explanation:
The sum of angles that make up a linear angle is 180°, so we have ...
60 + a + 55 = 180
a = 65 . . . . . . . . . . . . . . subtract 115
The acute angles in a right triangle are complementary, so we have ...
b = 90 -65 = 25
Vertical angles are congruent, so ...
c = b = 25
___
Angle d is the complement of the one marked 15, so its measure is ...
d = 90 -15 = 75
The angle measures are ...
a = 65°
b = 25°
c = 25°
d = 75°
