Answer:
#7 = 53.41
#8 = 18.85
#9 = 87. 96
Step-by-step explanation:
The formula for Circumfrance of a circle is: C=2 π r
So lets do #7:
17/2 (the radius is 1/2 of the diameter)
R= 8.5 (now plug in)
C= 2 π 8.5
C=17π
Now repeat on 8 and 9
8:
C= 2 π 3
C=6π
c= 18.85
9:
C= 2 π 14
C= 28π
C= 87.96
First,
|-13| represents the absolute value of the number 13. Absolute values cannot be negative. So |-13| cannot become -13, it would become 13.
So,
|-13| - |13| = -13 - 13 = 26 would become
|-13| - |13| = 13 - 13 = 0
Answer:
Step-by-step explanation:
- 162 total guests.
- 3 servers
Let the number of guests the second server helped be x.
then the first server helped 3x
then the third server helped [(3x)*2] = 6x
Equation in total:
6x + 3x + x = 162
10x = 162
x = 16.2
- First server helped: 3 * 16.2 = 49 guests
- Second server helped: 16 guests
- Third server helped: 6x = 6(16.2) = 97 guests
Answer:
sqrt(13) =x
Step-by-step explanation:
We have 2 right triangles, one on the right and one on the left
The base is 1/2 of 4 or 2 and the height is 3
We can use the Pythagorean theorem to find the hypotenuse
a^2 + b^2 = c^2
2^2 + 3^2 = x^2
4+9 = x^2
13 = x^2
Take the square root of each side
sqrt(13) =x
