Answer:
x = 4
Step-by-step explanation:
Multiply both sides of the equation by 3
7 + 2x = 15
Subtract 7 from both sides of the equation
2x = 8
Divide both sides of the equation by 2
x = 4
Hope this helps :)
You are going to treat this as a triangle so one side is 13 units long and the other is 22. And using the pythagorean theorem a²+b²=c².
13²+22²=c²
169+484=c²
653=c²
√653=√c²
25.55386...=c
Or, rounded to the nearest hundredth, 25.55
No, he put one up there every 10 minutes, meaning he is going at a consistent rate. No matter what hour he checks, the result will be the same.
2n + 1 , 2n + 3 , 2n + 5
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( 2n + 5 ) + ( 2n + 3 ) = 5 × ( 2n + 1 ) - 15
4n + 8 = 10n + 5 - 15
4n + 8 = 10n - 10
Add both sides 10
4n + 8 + 10 = 10n - 10 + 10
4n + 18 = 10n
Subtract both sides 4n
4n - 4n + 18 = 10n - 4n
18 = 6n
Divide both sides by 6
18 ÷ 6 = 6n ÷ 6
n = 3
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Thus that three numbers are :
2(3) + 1 , 2(3) + 3 , 2(3) + 5
6 + 1 , 6 + 3 , 6 + 5
7 , 9 , 11
And we're done ....
Step-by-step explanation:
a/20=10
=a=10×20
a=200
