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olganol [36]
3 years ago
14

Christian has six grades from test and IXL. They are all weighted equally. If Christian's grades are 100,96,96,88,70, and 100, w

hat is thhe current average grade? (Round to the nearest whole number)
Mathematics
1 answer:
lina2011 [118]3 years ago
5 0

Answer:

100+96+96+88+70+100=550

550 divided by 6 is 91 1/3

92 is his current grade

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So 452.3 campers will be coming back next year

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Answer:

Option B

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ABC Bookstore sells new books according to the demand function P = -Q + 25, where P is the price and Q is the quantity. If the b
Ghella [55]
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clark bill amount for dinner at a restaurant was $32.00. How much did clark pay in all if he left a tip of 15% ?
Aleksandr-060686 [28]
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3. Show that a circle with equation (x−2)^2+(y+3)^2=160 has two tangent lines with equations
Pepsi [2]

Answer:

  see below

Step-by-step explanation:

A graphing calculator shows each of the lines intersect the circle in exactly one place, so is tangent.

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Each of the given lines is written in point-slope form. Each has a slope of 1/3. We will call the point in its equation the "reference point" of each line. For the first line, it is (6, -15); for the second line it is (-2, 9).

The center of the circle is (2, -3), so the slope from the center to the reference point of each line is ...

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These slopes are the negative reciprocal of the slope of each of the lines, so a segment from the circle center to the reference point of each line is perpendicular to the line.

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The reference point of line 1 (6, -15) is on the circle:

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So, the reference point of each line is on the circle and that point is the endpoint of a segment from the circle center that is perpendicular to the line. Hence each of the lines is a tangent at its reference point.

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