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ankoles [38]
3 years ago
9

Two 20 m diameter circles are placed so that the circumference of each just touches the center of the other. What is the area co

mmon to each circle?
Mathematics
1 answer:
yan [13]3 years ago
6 0
R = d/2 = 10
common area = (2/3)πr^2 - (rt(3)/2)r^2
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If Aldo puts 400 into a savings account that paid an interest rate of 5.4 percent What was the total amount in his account at th
Ne4ueva [31]

Answer:

\$421.60

Step-by-step explanation:

we know that

The simple interest formula is equal to

A=P(1+rt)

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest  

t is Number of Time Periods

in this problem we have

t=1\ year\\ P=\$400\\ A=?\\r=5.4\%=5.4/100=0.054

substitute in the formula above

A=400(1+0.054*1)

A=400(1.054)

A=\$421.60

Remember that Interest is equal to

I=A-P

I=\$421.60-\$400=\$21.60

5 0
3 years ago
Jack spends 1 1/2 as long on his homework as Jill. Last week Jill spent 9 1/2 hours doing homework. How long did Jack spend doin
alina1380 [7]
The amount of time Jill spent to do her homework 
= 9 1/2 hours. which equals to  570 minutes.

Which means, the amount of times Jack needed to do his is 
= 570 minutes x 1.5
= 855 minutes which equals to 14 1/4 hours

hope this helps
7 0
4 years ago
Find the value of x.<br> 48<br> (7x + 13)<br> A. 7<br> B. 11<br> C. 3<br> D. 5
Lesechka [4]
The value of x is D. 5
3 0
3 years ago
2/3y = 14/39<br> Please help me answer this.
Sati [7]

Answer: y =13 because y represents how the number of how many times you multiply 2/3 to get to 14/39 so you divide 39 by 3 and get 13. now if you times 2 by 13, you don't get fourteen so I'm confused on that part and I might be wrong so I'm sorry if I'm wrong

3 0
4 years ago
AREA OF A TRAPEZOID PLEASE HELP
shepuryov [24]
A= a+b over 2 times height
18 + 8 = 26
26 divide by 2 = 13
13 x 6 = 78
area is 78
3 0
3 years ago
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