Base Surface Area = 2π×7²<span> = </span><span>307.8760800518 centimeters2</span>
<span>Lateral Surface Area = 2π×7×8.25 = </span><span>362.85395148962 centimeters2</span>
<span>Total Surface Area = </span><span>670.73003154142 centimeters<span>2 = b:670.7</span></span>
Answer:50v+200
I hope it helps
Step-by-step explanation: 1st you multiply 2nd you
Eliminate redundant parentheses
3rd you
Rearrange terms
It is wrong
-80*-31 is actually -80×31
so the answer is 2480
hope this helps feel free to ask
Answer:
10:7
Step-by-step explanation:
ratios are simply just like fractions!
this ratio (40:28) can be re-written as 40/28
now, you can simplify this to its lowest terms
40/28=20/14=10/7
first in those steps i re wrote the question, then divided by two, then divided by two again !
so, 40:28=10:7
--------------------------------
you can even check this by cross multiplying, since ratios are fractions
40x7=28x10
280=280
they are equivalent which means our ratio is correct :)
hope this helped <333
Answer:
The equations are:
10x + 9y = 122
x + y = 13
Step-by-step explanation:
Given Jose makes 10$ per hour washing cars and 9$ per hour walking dogs.
Also, it is given that he had worked for 13 hours total making 122$.
Let us assume the number of hours he spent on washing cars = 'x'.
Let us assume the number of hours he spent on walking dogs = 'y'.
Since, the total number of hours is 13, we can write:
x + y = 13 . . . eqn(1)
And since he has made 122$ in total, we will have:
10x + 9y = 122 . . .eqn(2)
'10x' represents the total money earned by washing cars and '9y' represents the total hours spent on walking dogs.
Hence, Eqn (1) and Eqn(2) is the answer.
Solving them will give: x = 5 and b = 8.
