Answer:
x = 7
y = 2
Step-by-step explanation:
In the above question, we are given 2 equations which are simultaneous. To solve this equation, we have to find the values of x and y
x + 3y = 13 ........ Equation 1
x - y = 5...........Equation 2
From Equation 2,
x = 5 + y
Substitute 5 + y for x in Equation 1
x + 3y = 13 ........ Equation 1
5 + y + 3y = 13
5 + 4y = 13
4y = 13 - 5
4y = 8
y = 8/4
y = 2
Since y = 2, substitute , 2 for y in Equation 2
x - y = 5...........Equation 2
x - 2 = 5
x = 5 + 2
x = 7
Therefore, x = 7 and y = 2
Answer:
220
Step-by-step explanation:
<u>first we have by Bracket of BODMAS rule then we have to multiply 10 *8 = 80</u>
<u>first we have by Bracket of BODMAS rule then we have to multiply 10 *8 = 80then we have to open bracket 80 +150</u>
<u>first we have by Bracket of BODMAS rule then we have to multiply 10 *8 = 80then we have to open bracket 80 +150 = 220</u>
<u> (10*8) +15</u>
<u>Solution</u>
<u>Solution= (80) +150</u>
<u>Solution= (80) +150= 80+150</u>
<u>Solution= (80) +150= 80+150=. 220</u>
<u>Solution= (80) +150= 80+150=. 220 </u>
Answer:

multiply either sides by 3:

divide either sides by πr² :
