Answer:
4343
Step-by-step explanation:
To find multiple of 7 from 1 to 100,
Take the quotient of 100/7=14
n=100 (number of terms)
n=100-14 (Without Multiple of 7=number of terms - multiple of 7)
=>n=86
Sum of 1 to 100 => Sn = n/2(a + an)
=> Sn = 86/2(1+100)
=> Sn = 43(101)
=> Sn = 4343
Answer: Hi, If I'm correct then Sal demonstrates how the sum of the exterior angles of a convex polygon is 360 degrees.
Hope this helps! :)
Answer:
L=135 W=105
Step-by-step explanation:
Your rectangle has two length sides and two width sides. That means two sides are 30 feet longer than the other sides. If you subtract 60 from 480, you get 420. Divide 420 by 4 and you get 105. So now you know the width sides are 105 feet long, so 105+105=210. Now all you have to do is add 30 to 105 and get 135. That is the length of the two longer sides. So add 135 and 135 to get 270. All you have to do is add 210 and 270 and you end up with the 480 feet of fence you were given. I know this is probably not the fancy way of doing it, but it works.
Let, the cost of a belt = x
cost of a wallet = y
Then, system of equations would be:
x + y = 42
7x + 4y = 213
Multiply 1st equation by 4,
4x + 4y = 168
Substitute it from 2nd equation,
3x = 45
x = 15
Now, substitute it in 1st equation,
15 + y = 42
y = 42 - 15 = 27
In short, Belt costs $15 and wallet costs $27
A)
15x4=60
27x4=108
60+108=
four belts and four wallets cost 168
B) 3x15=
<span>three belts cost 45</span>
The answer is 1/140
Work Shown
0.3 / 42
Convert and Rewrite
3/10 x 1/42
Reduce The Numbers With the greatest Common divisor 3
1/10 x 1/14
Multiply the fractions
1/140 or
AlTernative Form 0.007114285 , -1 over 140
I Hope This Help
-Dante