Answer:
y = 7.8x² +317x +1
Step-by-step explanation:
Just finished the exam & I got it wrong... copied the correct answer from the review.
9514 1404 393
Answer:
B = 6.65 in²
Step-by-step explanation:
The base area (B) is the area of the triangular base of the prism. You already know the sides of that triangle are 3, 5, and 7 inches. The figure shows the altitude to the side length 7 is 1.9 inches. The triangle area formula applies:
A = 1/2bh
A = 1/2(7 in)(1.9 in) = 6.65 in² . . . . area of one triangular base.
Then the area of one base is B = 6.65 in².
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The lateral area is the product of the perimeter and the height:
LA = Ph = 15(12) = 180 . . . . square inches
The total surface area is the sum of the lateral area and the areas of the two bases.
SA = LA + 2B
SA = 180 in² + 2(6.65 in²) = 193.3 in²
Answer:
Step-by-step explanation:
If v = plane velocity and c = air current, then:
v + c = 480
v - c = 400
2v = 880
v = 440
The plane's velocity in still air would be 440 miles per hour.
I would say it is 32 on arc CD
Answer:
15
Step-by-step explanation:
The range is the difference from the highest and the lowest number, 32 - 17 = 15. Hope this helps!
