Answer:For this case, the first thing we must do is define variables.
x: amount of time Miguel uses to complete the task.
y: amount of time Maria uses to complete the task.
We write the system of equations:
x + y = 60
y = (1/2) x
Solving the system we have:
x = 40 minutes
y = 20 minutes
Answer:
it take her to wash them by herself about:
y = 20 minutes
Step-by-step explanation:
To find the amount needed to build the fence you would first need to find the perimeter of the rectangle. Which the formula is P=2(l+w).
Then you plug in your numbers into the formula and you’ll get P=2(90.66+45.5)
Then you can do the math or type it into a calculator and you’ll get 272.32................Then just leave the numbers after the decimal out and 272 should be your estimated answer
Answer:
0.034
Step-by-step explanation:
the opposite of multiplication is division. 0.34 divided by 10 is 0.034. you can also figure this out by moving the decimal to the left once.
The given polyn. is not in std. form. To answer this question, we need to perform the indicated operations (mult., addn., subtrn.) first and then arrange the terms of this poly in descending order by powers of x:
P(x) = x(160 - x) - (100x + 500)
When this work has been done, we get P(x) = 160x - x^2 - 100x - 500, or
P(x) = -x^2 + 60x - 500
So, you see, the last term is -500. This means that if x = 0, not only is there no profit, but the company is "in the hole" for $500.
Answer:
y=2*0.68^x = exponential decay
Step-by-step explanation:
