Answer:
x=2 and y= -1
Step-by-step explanation:
1) we transform first equation
2y= x-4
2y +4= x
So x= 2y+4
2) we insert equation from 1) into second equation
4*(2y+4)+3y=5
8y+16+3y=5
11y+16=5
11y= -11
y= -1
3) insert y into 1)
x= 2*(-1)+4
x= -2+4
x= 2
Answer:
52: 8-Z
54: 18+X
60: 12.3
64: 2.5
52: 8 subtracted from z, the equation will only be 8-z because we do not know what z is.
54: 18 more than a number, we do not know what the number is so we will name it X, more than is adding, so the equation will look like this, 18+X
60: Since y is 6.7, all you have to do is subtract 19-6.7.
64: Since n is 7.5 just divide 7.5 from 3 and you will get 2.5.
The equation for this line would be y=((-4/9)x)+4
-46
52-16=negative 46 because shes still below sea level
Answer:
ln(5/256)
Step-by-step explanation:
Step 1, do the stuff in parenthesis:
1/5 (2ln5 + 3ln5) - 8ln2 = 1/5 (5ln5) - 8ln2
Step 2, remove parenthesis and simplify:
1/5 (5ln5) - 8ln2 = ln5 - 8ln2
Step 3, use this formula-
8*ln2 = ln2^8 = ln256
-to get:
ln5 - 8ln2 = ln5 - ln256
Step 4, use another formula:
ln(A) - ln(B) = ln(A/B), so the answer is ln(5/256) TADA!
