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City A and City B are located 610 kilometers (km) apart from each other on Highway X. At 8:00 a.m, Alonzo began driving along Highway X from City A to City B at an average driving speed of 90 kilometers per hour (km/h). At 9:30 a.m. on the same day, Ryan began driving along Highway X from City B to City A at an average driving speed of 100 km/h. How long, in hours and minutes to the nearest minute, did Ryan drive before meeting Alonzo on Highway X ?
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If is a positive integer and , which of the following could NOT be a value of ?
Magoosh $$If 2^{2n} + 2^{2n} + 2^{2n} + 2^{2n} = 4^{24}$$, then n =
Magoosh If $$\frac{1}{x} + \frac{1}{3} + \frac{1}{4} = 1$$, then x =
190302 Which quadrant does line y=2x+4 intersect parabola y=-$$x^{2}$$+3?
Is b> 4? 1. $$2b^{2}=50$$ 2. 3b-2 = -17
If $$0\le x\le 4$$ and y< 12, which of the following CANNOT be the value of xy?
OG19 OG20 OG2022 If X is a positive integer and  ​$$4^{x}$$-3=y ， which of following CANNOT be value of y?
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A list of measurements, in increasing order, is 5, 8, 13, 14, 16, 21, 28, and . If the median of the measurements is times the mean, what is the value of ?
190113 The equations of two lines are $$y_1$$=$$m_1$$x+$$b_1$$, $$y_2$$=$$m_2$$x+$$b_2$$. $$m_1$$, $$m_2$$, $$b_1$$, and $$b_2$$ are constants. $$m_1$$$$m_2$$$$b_1$$$$b_2$$=？ (1) The x-intercepts of two lines are -2 and 4. (2) The y-intercepts of two lines are 6 and 4.
191020 What is the reciprocal of the sum of the reciprocals of 2, 4, 6, and 12 ?
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If  is an integer and , which of the following CANNOT be a divisor of ?
What is the value of the integer k?(1)$$k + 3 > 0$$(2)$${k}^{4}\le{0}$$
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Kara's math average went down 20% from freshman year to sophomore year. During the same time, her history average went up 8%. If her combined average in the two classes went down 8%, what is the ratio of her history average during her freshman year to her math average during freshman year?
190415 f(x)=1-x+$$x^{2}$$-$$x^{3}$$+$$x^{4}$$-$$x^{5}$$.f(3)=?
OG12 if |a c b d|= ad-bc for all numbers a, b, c, and d, then |3 -2 5 4|
191222 730高分节-数学测试 $$ 1 + x + x ^ { 2 } + x ^ { 3 } + x ^ { 4 } < \frac { 1 } { 1 - x } ?$$
(1)x<1
(2)x>0
181215 Is $$\frac{x^{2}}{4}$$ > x？ 1：|x| ≥ x 2：x < 0
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Of the people at a certain movie, each person either likes or dislikes horror movies and each person either likes or dislikes romance movies. Of these people, \tfrac{<font color='#FE8080'>4</font>}{5} dislike horror movies; and of those who dislike horror movies, also dislike romance movies. How many of the people like romance movies but dislike horror movies?

(1) 150 people were at the movie.

(2) 30 of the people like horror movies.
OG20 OG2022 If, in the figure above, ABCD is a rectangular region, what is the value of the ratio $$\frac{area of Δ EDA}{area of Δ EBC}$$ ? 1.AD = 4 2.AE = 2 and EB = 4