Answer:
Mean-53.83
Median-64.5
Mode-13
Range-72
Step-by-step explanation:
Answer:
5.3333333 or 5 
Step-by-step explanation:
30 divided by 2 equals 15.
80 divided by 15 equals 5.3333333 or 5 .
Question: Li deposited $17,500 into a bank account that earned simple interest each year. After 2 years, he had earned $2975 in interest. If no money was deposited into or withdrawn from the account, what was the annual interest rate? Solution: I=Prt. First, we have to find the interest / I. In the question is asked: '' he had earned $2975 in interest" so we know that the Interest/ I is $2,975. $2,975= $17,500/P*r*2/t in years (Substitute) $2,975= 35,000r (Multiply) $2,975/35,000= $35,000r/$35,000 (Divide each side by $35,000) $2,975/$35,000=0.085 Covert the decimal 0.085 to a percent. To do so multiply the decimal by 100 0.085*100= 8.5, add the percent sign and you got the answer 8.5% Li's annual interest rate is 8.5% (we were finding the rate/r)
The SA formula to find a right cone is area of the base x 1/2 (perimeter)(slant height)
To find the area of the base you do radius squared x pi
Radius=11
So 121pi is area of the base
Perimeter=circumference of the circle
So perimeter=24pi
So 121pi x 1/2 (12pi)(6)
12 x 6=72pi/2=36pi
121pi x 36pi= 4356pi
Answer: 4356pi
Answer:
18) Area= 5*5/2=25/2=12.5 unit ^2
19) Area=AB^2V3/4=8a^2*V3/4=2V3a^2
Step-by-step explanation:
18. A(-3,0)
B(1,-3)
C(4,1)
AB=V(-3-1)^2+(0+3)^2=V16+9=V25=5
AC=V(-3-4)^2+(0-1)^2=V49+1=V50=5V2
BC=V(1-4)^2+(-3-1)^2=V9+16=V25=5
so AB=BC=5
and AC^2=AB^2+BC^2
so trg ABC is an isosceles right angle triangle (<B=90)
Area= 5*5/2=25/2=12.5 unit ^2
19. A(a,a)
B(-a,-a)
C(-V3a, V3a)
AB=V(a+a)^2+(a+a)^2=V4a^2+4a^2=V8a^2
AC=V(a+V3a)^2+(a-V3)^2=Va^2+2a^2V3+3a^2+a^2-2a^2V3+3a^2=V8a^2
BC=V(-a+V3a)^2+(-a-V3a)^2=V8a^2
so AB=AC=BC
Area=AB^2V3/4=8a^2*V3/4=2V3a^2
