I think d but I’m not correct or su
We know that 1 ft= 1/3 yd.
6 ft/ 8 yd
= 6* (1 ft)/ 8 yd
= 6* (1/3 yd)/ 8 yd
= 2 yd/ 8 yd
= 1/4
The final answer is 1/4~
X=-3 and y=5
2x+y=-1
-x+3y=18
3y-18=x
2(3y-18)+y=-1
6y-36+y=-1
7y=-1+36
7y=35
y=35/7
y=5
-x+3y=18
-x+3(5)=18
-x+15=18
-x=18-15
-x=3
x=-3
<u>Answer-</u>

<u>Solution-</u>
We know that,

From the diagram,
RS is the base and UT is the height of the triangle.
Applying distance formula,


Putting the values,

Answer:
first evening = 21 phone calls
second evening = 11 phone calls
third evening = 84 phone calls
Step-by-step explanation:
Total phone calls = 116
Let
Number of calls in the first evening = x
The second evening = x - 10
The third evening = 4x
Total phone calls = first evening + second evening + third evening
116 = x + (x - 10) + 4x
116 = x + x - 10 + 4x
116 + 10 = 6x
126 = 6x
x = 126 / 6
x = 21 phone calls
Number of calls in the first evening = x
= 21 phone calls
The second evening = x - 10
= 21 - 10
= 11 phone calls
The third evening = 4x
= 4(21)
= 84 phone calls