Answer:
4 - x
Step-by-step explanation:
product means multiply
the product of 1 and x = 1 × x = x
This is then subtracted ( minus ) from 4 giving
4 - x ← expression representing the situation
Answer:
176 girls
Step-by-step explanation:
31+44 = 75
300/75 = 4
4*44 = 176
176 girls in the school
Answer:
x = 12, y = 0
Step-by-step explanation:
Use elimination.
24y = 0
y = 0
Then plug back into the second equation.
2x + 9(0) = 24
2x = 24
x = 12
Plug back into the first equation to check.
Try the Pythagorean theorem,
. Does
? If it does, you have yourself a right triangle. If it doesn't, then it isn't a right triangle.
From the equation e^(-0.055x) = 2e^(-0.124x), we can first take the natural logarithm of both sides:
ln(e^(-0.055x)) = ln(2e^(-0.124x))
ln(e^(-0.055x)) = ln2+ln(e^(-0.124x))
Since ln(e^a) = a,
-0.055x = ln2 - 0.124x
0.069x = ln2
x = 10.05, or approximately 10 days
