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190310
CD is orthogonal to AD. CD=1. AB=?
1：AC =2
2：AB=BC
Ready4
Short Story
Fraction of the Total Reading Assignment

Hannah was given an assignment to read short stories this week. She does her reading on Wednesday and Thursday. Her teacher labeled the stories , , , , , and . The table shows the percentage of each story as a fraction of the total number of pages of the entire reading assignment. If Hannah read more than of the entire assignment on Wednesday and she always completed a short story in one sitting, did she read on Wednesday?

(1) Hannah read and on Thursday.

(2) Hannah read and on Wednesday.
Ready4

A certain bakery that sells donuts and bagels reported that the revenue from donut sales in 2016 was up 12 percent from 2015 and the revenue from bagel sales in 2016 was down 3 percent from 2015. If total revenues from donut and bagel sales in 2016 were up 2 percent from 2015, what is the ratio of revenues from donut sales to bagel sales in 2015?
OG15 OG16 OG17 OG18 OG19 OG20 OG2022 If k is an integer such that 56 < k < 66, what is the value of k ?(1) If k were divided by 2, the remainder would be 1(2) If k + 1 were divided by 3, the remainder would be 0.
PREP07 Test 2 If set S consists of the numbers 1, 5, -2, 8, and n, is 0 < n < 7 ? (1) The median of the numbers in S is less than 5. (2) The median of the numbers in S is greater than 1.
OG20 OG2022 What is the remainder when the positive integer n is divided by 5 ? 1.When n is divided by 3, the quotient is 4 and the remainder is 1. 2.When n is divided by 4, the remainder is 1.
PREP07 Test 1 If $$z^n=1$$, what is the value of z?(1)n is a nonzero integer.(2)$$z > 0$$
What is the value of the product xy?(1) $$\frac{x}{y}=\frac{1}{5}$$(2) x+y=60
PREP07 Test 1 If $$R = 1 + 2xy + x^2y^2$$, what is the value of xy ?(1) R = 0(2) x > 0
Magoosh What is the value of $$x^4y^2-$$$${x^4}\over{y^2}$$(1) x = 2y(2) y = 1
OG19-数学分册 Is xy> 5? (1) $$1 \leq x \leq 3$$ and $$2 \leq y \leq 4$$. (2) $$x+ y= 5$$
OG12 If line k in the xy-plane has equation y = mx + b, where m and b are constants, what is the slope of k ?(1)k is parallel to the line with equation y = (1 - m)x + b + 1.(2)k intersects the line with equation y = 2x + 3 at the point (2,7).
Magoosh If 3 apples and 4 bananas costs $1.37, and 5 apples and 7 bananas costs $2.36, what is the total cost of 1 apple and 1 banana?
OG19-数学分册 If m is an integer greater than 1, is m an even integer? (1) 32 is a factor of m. (2) m is a factor of 32.
PREP07 Test 2 At the bakery, Lew spent a total of $6.00 for one kind of cupcake and one kind of doughnut. How many doughnuts did he buy?(1) The price of 2 doughnuts was $0.10 less than the price of 3 cupcakes. (2) The average (arithmetic mean) price of 1 doughnut and 1 cupcake was $0.35.
Magoosh If $$p ={ {1}\over{\sqrt{14}-\sqrt{13}}} $$and q = $${ {1}\over{\sqrt{14}+\sqrt{13}}} $$ then $$p^{2 }+ 2pq + q^{2} =$$
190603 DS: x> 1, is x / 3 an integer?
(1). 72 / x is an integer
(2). 81 / x is an integer
OG19-数学分册 The infinite sequence $${a}_{1}$$, $${a}_{2}$$,..., $${a}_{n}$$,... is such that $${a}_{1}={2}$$, $${a}_{2}=-{3}$$, $${a}_{3}={5}$$, $${a}_{4}=-{1}$$, and $${a}_{n}={a}_{n-4}$$ for $$n > 4$$. What is the sum of the first 97 terms of the sequence?
OG12 OG15 OG16 OG17 OG18 OG19 OG20 OG2022 In a certain sequence, the term $${x}_{n}$$, is given by the formula $${x}_{n}={2}{x}_{n-1}-\frac{1}{2}({x}_{n-2})$$ for all $${n}\geq{2}$$. If $${x}_{0}=3$$ and $${x}_{1}=2$$, what is the value of $${x}_{3}$$
OG15 OG16 OG17 OG18 At a supermarket John spent $$\frac{1}{2}$$ of his money on fresh fruits and vegetables,$$\frac{1}{3}$$ on meat products, and $$\frac{1}{10}$$ on bakery products. If he spent the remaining $6 on candy, how much did John spend at the supermarket?