(Pretend you're multiplying 15×20)
1. Start at 0 (obviously)
2. Go 20 numbers to the left and stop (if you're drawing or writing on the number line, make a line vertically to show that's where you stopped for the first 20
3. Do this 14 more times and keep on going to the right
Perimeter (p) = 2×length (l) + 2×width (w)
p = 2l+2w
area (a) = l×w, so solve for one (I'll use l):

since p = 30, and a = 50, substitute the "a÷w" in for l in the perimeter equation:

Now plug in p and a values:


therefore width can be either 5 or 10 (but not both), so let's plug in:
l = a÷w = 50÷5 = 10
So if w = 5, then l = 10
D) 5 feet, and 10 feet
Answer:
option A. 36 square inches
Step-by-step explanation:
The figure is a trapezium
Area of a trapezium=1/2 *(sum of parallel sides) *height
From the diagram, the parell sides are 6 inches and 12 inches ,and the height is 4 inches.
We substitute these values into the formula.
This implies that, the area




Thus the area is 36 square inches
B.1.258, hope I helped! :)
Answer:
The Answer is: 78.
Step-by-step explanation:
This one makes you think!
Let n = the number.
The number is greater than 50 and less than 85:
50 < n < 85
Some of the factors are 13 and 3.
So, multiply 13 * 3 = 39.
Multiply again by 2:
39 * 2 = 78.
78 can be factored as:
13 * 3 * 2 = 78, and it is greater than 50 and less than 85.
The number is 78.
Hope this helps! Have an Awesome Day!! :-)