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190215 The line $$l_1$$ goes through (5,p) and (1,3). The equation of line $$l_2$$ is x-2y-6=0 . What is the value of p when $$l_1$$ parallels to $$l_2$$ ?
190215 f(x)=7-x, (0 ≤ x ≤ 4),f(x)=$$\frac{1}{2}$$x-2(4 < x ≤ 6).Which one of the following options can be the possible value of f(x）?
191020 1357911131517192123 .... What is the 110th number?
191020
As shown in the figure, there is a container with an isosceles triangle on the side，the bottom side of the isosceles triangle is 5 meters long, there is water in it, the water is 3 meters wide, and the container is 3 meters high. What is the value of h？
191020 If $$\sqrt { x ^ { 2 } + y ^ { 2 } } = x + y$$, xy=?
190302 The cinema was supposed to sell 10 adult tickets and 20 children's tickets. Tickets for adults and children were sold $25 and $10, respectively. A total of $300 tickets were not sold before the film started. 4 adult tickets were sold. How many children tickets were sold?
190207 One machine can complete 800 units of work in 2.5 hours. How many machines can complete 7200 units of work in 8 hours?
190207 What is the reminder of $$2^{2550}$$ when divided by 7?
190215 The vertex coordinates of quadrilateral ABCD are A (3,1), B (10,1), C (5,8), D (3,5). How many right angles are there in this quadrilateral?
191031 If |nx-8|≤4, then how many positive integers n that can make x exactly have two different integer solutions?
200301 还原机经选题: 数论&amp;代数 What's the reminder when $$9^{581}$$ is divided by 10?
191222 |2-|2-x||=2，How many solutions do X have?
Ready4

For the positive numbers, k, k+1, k−2, k+3, what is the ratio of the mean to the median?
Ready4

If k is an integer greater than 6, then all of the following must be divisible by 3 EXCEPT
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If lines and are parallel to each other, is the slope of line negative?

(1) line passes through the point

(2) line passes through the point

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Like Dislike Unsure
Broccoli 60 70 70
Brussel Sprouts 55 90 55

The table above indicates the results after 200 people were surveyed on their feelings about two different kinds of vegetables: broccoli and brussel sprouts. The choices for their responses were either: "like", "dislike", or "unsure". How many people surveyed "liked" both vegetables?

(1) 90 people did not respond "like" for either vegetable

(2) 25 people "dislike" both vegetables
Ready4

The circle graph above represents the total amount of tax money that Town received in 2016. Town then allocated its tax money to six different departments: , , , , , and . If the center of the circle graph is and residents paid a total of $8,600,000 in taxes to Town in 2016, how much of that money did department receive?

(1) Department received $3,010,000, 5% more than double the percentage of Town 's tax money that Department received.

(2)

Magoosh A sequence is defined by$$ s_n = (s_{n – 1} – 1)(s_{n – 2})$$ for n > 2,and it has the starting values of$$ s_1 = 2$$ and $$s_4 = 9.$$ All terms are positive. Find the value of $$s_6$$.
Ready4

If , which must be greater than ?

  I.

 II.

III.

Magoosh If$$8^{5}x4^{6}\over16^{n}$$=$$32^{1-n}$$then n=