The answer is b: {x{x=-7, -6, 2, 11, 3)
B) is 20 girls
3a) the ratio is 5:7
3b) sister 1 gets 1,750
4) 154 dollars is shared between the boys
Answer:
79 square inches.
Step-by-step explanation:
Mark is baking a pie that <u>has a diameter of 10 inches</u>. he wants to cover the top of the pie with a pie crust. <u>what is the area</u> of the crust that will cover the top of the pie?
Pie = circle (shape)
What is the area of a circle 10 inches in diameter? ≈ 79 square inches. and r denotes the radius. = 78.5 square inches. ≈ 79 square inches.
Part1:
The answer is "circumcenter".
One of a few centers the triangle can have, the circumcenter is where the perpendicular bisectors of a triangle converge or intersect. The circumcenter is additionally the focal or central point of the triangle's circumcircle - the circle that goes through each of the three of the triangle's vertices.
Part2:
The answer is "centroid".
The centroid of a triangle refers to the intersection point of the three medians of the triangle (every median associating a vertex with the midpoint of the contrary side). It lies on the triangle's Euler line, which additionally experiences different other key focuses including the orthocenter and the circumcenter.
Part3;
The answer is "incenter".
The incenter of a triangle refers to a triangle center, a point characterized for any triangle in a way that is free of the triangle's situation or scale. The incenter might be identically characterized as the point where the interior edge bisectors of the triangle cross, as the point equidistant from the triangle's sides, as the intersection purpose of the average pivot and deepest purpose of the grassfire change of the triangle, and as the inside purpose of the inscribed circle of the triangle.
Answer:
Below in bold.
Step-by-step explanation:
y = 2x²-4
First find x in terms of y:
2x² = y - 4
x² = (y - 4)/2
x = √ [(y - 4)/2]
Now replace x by the inverse f-1(x) and y by x:
f-1(x) = √ [(x - 4)/2] (Note: it's the positive square root only)