Trong mặt phẳng với hệ tọa độ Oxy. Phép tịnh tiến theo vectơ Đề thi Học kì 1 Toán lớp 11 năm 2021 - 2022 có đáp án (Đề 2) biến đường thẳng Δ: x - y -1 = 0 thành đường thẳng Δ' có phương trình là

seems like d

step-by-step explanation:

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

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let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt