Answer:
4
Step-by-step explanation:
The distance formula is based on the Pythagorean theorem:
d² = (x₁ − x₂)² + (y₁ − y₂)²
(Notice the order doesn't matter.)
If we say (x₁,y₁) = (-6,-10) and (x₂,y₂) = (-2,-10), then the distance between the points is:
d² = (-6 − (-2))² + (-10 − (-10))²
d² = (-6 + 2)² + (-10 + 10)²
d² = (-4)² + (0)²
d² = 16
d = 4
9514 1404 393
Answer:
3.31227766..., irrational
Step-by-step explanation:
3/20 +√10 = 0.15 + 3.16227766017...
The root of 10 is irrational, so adding that to a rational number will give an irrational sum.
The sum is about 3.31227766017..., an irrational number.
Solve your system of equations.
3x+2y=8;2x+3y=2
Solve 3x+2y=8 for x:
3x+2y+−2y=8+−2y(Add -2y to both sides)
3x=−2y+8
3x/3=−2y+83(Divide both sides by 3)
x=−2/3y+8/3
Substitute (−2/3y+8/3) for x in 2x+3y=2:
2x+3y=2
2(−2/3y+8/3)+3y=2
5/3y+16/3=2(Simplify both sides of the equation)
5/3y+16/3+−16/3=2+−16/3(Add (-16)/3 to both sides)
5/3y=−10/3
5/3y5/3=−10/35/3(Divide both sides by 5/3)
y=−2
Substitute (−2) for y in x=−2/3y+8/3:
x=−23y+83
x=−23(−2)+83
x=4(Simplify both sides of the equation)
Answer is A)
The representative sample contained more adults than children
