Answer:
answer is -3 ....is this correct
The area of a rectangle is its <u>length x width</u>.
The perimeter of a rectangle is its <u>length + length + width + width</u>.
Let's have l stand for length and w for width. A will stand for area and P for perimeter. This gives us:
399 = l x w
80 = 2l + 2w We can divide both sides of this equation by 2 to get <u>40 = l + w</u>.
Now we need to find two numbers whose sum is 40 and product is 399.
Fitting some random numbers in gives us the numbers 19 and 21 for the length and width.
The top question, is 12’-1
The bottom is 12’2
The exponents are subtracted first which is just basic addition/ subtraction. Good luck!
Answer:
y = 35x
Step-by-step explanation:
Divide $140 by 4 to get the cost to rent the car for one day. Since y is the cost in dollars, 35 times x many days will give you the cost to rent the car.
Answer: x = 7y.
Step-by-step explanation: There is direct variation between the number of toddlers and the number of teachers. We know this because when one increases, the other would as well. We can write the equation of direct variation as x = 7y.