You use the equation 3.14r^2, for your problem, 3.14(5^2). Then you get 3.14(25) and guessing without using a calculator, you can see that it's going to be at least three times itself but not yet four. Therefore you can approximate the answer to be between 75 and 100 squared. I did this without a calculator but to get the exact answer you'd use a calculator and it would be letter B) 78.5 cm^2. Hope this helped!
All angles inside a triangle must add up to 180
x+y+z=180
if it is a right triangle, then one is 90 degrees
x+90+z=180
subtract 90
x+z=90
obtuse means that the angle is greater than 90
that is impossible because if x or z is greater than 90, then the other term must be negative which is impossible
it is not possible because the sum of the angles in the Triangle
Here are all the answers to this worksheet... Happy Halloween!
1-C
<span>2-B </span>
<span>3-D </span>
<span>4-A </span>
<span>5-B </span>
<span>100%</span>
Answer:
A) y= 5x - 3
Step-by-step explanation:
(5 • x) - 3 = y
Problem Solving:
5 • -6 = -30 - 3 = -33
5 • 3 = 15 - 3 = 12
5 • 9 = 45 - 3 = 42
5 • -4 = -20 - 3 = -23
5 • -5 = -25 - 3 = -28
A cube number is an integer which is a third power of another integer.
A triangular number is a number that counts the objects that can form equilateral triangle (sorry, I cribbed it a little from Wikipedia; it's difficult to explain). Just look at the picture.
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