Answer:
Julia found 5 coins
Step-by-step explanation:
lets take the # of coins julia found as "x"
alice found6
davi found 5
lucas found 6
and carter found 8
remember how to calculate mean( add all numbers and divide by the# of numbers)
so
6+5+6+8+x/5=6 (since there are "5" terms)
so
25+x/5=6
treat this like a linear equation so multiply by 5 on both sides
25+x/5(5)=6(5)
25+x=30
subtract "25 on both sides"
25-25+x=30-25
x=5
hope this helps
Answer:
10.3
Step-by-step explanation:
Volume of a sphere
V = 4/3 pi r^3
4574.9 = 4/3 (3.14) r^3
r= 10.3 in
X² - 6x + y² + 4y = 86
Complete the square:
x² - 6x + (9) + y²+4y + (4) = 86 + (9) + (4)
→(x - 3)² + (y + 2)² = 99
Center: (3, -2)
radius: √99 = 3√11
The general formula for a perimeter of rectangle is 2x(length+width). Here 20 is length and 8 is width. 2x(20+8). 2x(28). 56. The answer is 56.
i might be wrong about this one