Answer:
the 3rd 4th and 5th answers are true
Step-by-step explanation:
just substitute the points into the equations.
first equation, substitute the points 2,8 into the equation. 2 + 2(8) = 20.
2 + 16 = 20
18 = 20 is not a true statement.
second equation, substitute the points -1,5 into the equation. -1 + 2(5) = 10.
-1 + 10 = 10
9 = 10 is not a true statement.
third equation, substitute the points 7,7 into the equation. 2(7) - 7 = 7.
14 - 7 = 7
7 = 7 is a true statement.
fourth equation, substitute the points 7,-7 into the equation. 3(7) + -7 = 14.
21 + -7 = 14
14 = 14 is a true statement.
fifth equation, substitute the points 1, 1 into the equation. 2(1) + 6(1) = 8.
2 + 6 = 8
8 = 8 is a true statement.
Answer:
br=uh
Step-by-step explanation:
u need our help 4 this homework? Just do it yourself, though i would do this for 270 points.
Let us assume that the center of the circle is (0,0)
(x-h)² + (y-k)² = r²
x² + y² = 5,625
r² = 5,625
r = √5,625
r = 75
Area of a circle = π * r²
A = 3.14 * (75mi)²
A = 3.14 * 5,625 mi²
A = 17,662.50 mi²
Answer:
120
Step-by-step explanation:
A proportion can be called as an equation to check two ratios are equal to each other or not.
Whenever the terms of a proportion are cross multiplied, the cross products will always be equal.
So to check this we can find the cross products to check if two ratios are equal and if they are equal,they are in proportion. To find the cross products of a proportion, we multiply the extremes, and the means.
