If they are the sides of rectangle, then it's perimeter would be:
2(l+b) = 2(24.5+31.7) = 2(56.2) = 112.4
Answer:
x = 28 649/700
Step-by-step explanation:
Add 780/28.
1.07 +780/28 = x
x = 28 649/700 = 28.92_714285(repeating)
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If one were concerned with significant digits, one could argue that the value should be rounded to 28.93, the precision of 1.07.
the answer is -8, the 9 is negative and -9+1= -8
Call the radius r and the height of the cone h. The formula for the volume of a cone is r^2*h*pi/3, and the formula for the volume of a sphere is 4r^3/3, so half of a sphere has volume 2r^3/3. Adding these, our answer is:
Answer:
There were 40 2-point questions and 9 3-point questions.
Step-by-step explanation:
To solve this situation, write two equations. One for the number of questions and one for the number of points.
Let x be the number of 2 point questions.
Let y be the number of 5 point questions.
x + y = 49
Now since x are each worth 2 points, the total points is 2x.
And since y are each worth 5 points, the total points is 5y.
So 2x + 5y = 125. Substitute one of the equations into the other to solve for the variables.
x + y = 49 becomes x = 49 - y. Substitute it.
2(49-y) + 5y = 125
98 - 2y + 5y = 125
98 + 3y = 125
3y = 27
y = 9
Substitute y = 9 back into the equation x = 49 - y to find x.
x = 49 - 9
x = 40
