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PREP07 Test 1 Is $${(x+1)\over(x-3)}<0$$?(1) -1 < x < 1(2) $$x^2 - 4 < 0$$
Magoosh What is the value of x?(1) $$\sqrt{x^4}=9$$(2) $$\sqrt{x^2}=-x$$
代数 If –4 < x < 7 and –6 < y < 3, which of the following specifies all the possible values of xy?
$$\frac{1}{3}+\frac{1}{2}-\frac{5}{6}+\frac{1}{5}+\frac{1}{4}-\frac{9}{20}$$ =
OG12 if |a c b d|= ad-bc for all numbers a, b, c, and d, then |3 -2 5 4|
OG16 OG17 OG18 OG19 $$\frac{1}{3}+\frac{1}{2}-\frac{5}{6}+\frac{1}{5}+\frac{1}{4}-\frac{9}{20}=$$
OG19 OG20 OG2022 If X is a positive integer and  ​$$4^{x}$$-3=y , which of following CANNOT be value of y?
300难题 A school supply store sells only one kind of desk and one kind of chair, at a uniform cost per desk or per chair. If the total cost of 3 desks and 1 chair is twice that of 1 desk and 3 chairs, then the total cost of 4 desks and 1 chair is how many times that of 1 desk and 4 chairs?
Ready4

A right triangle has two legs of equal length. What is the perimeter, in centimeters, of the triangle?

  1. The area of the triangle is 4 square centimeters.
  2. The hypotenuse of the triangle measures 4 cm.
Ready4

S = {2, 3, 4, 6} T = {2, 3, 4, 6}

Two integers will be randomly selected from the sets above, one integer from set S and one integer from set T. What is the probability that the product of the two integers will equal 12?
Ready4

Of 8 people having a meal, 5 are having fries, 4 are having burgers and 3 are having bacon. No other food is at the table. Each person is eating at least 1 item. If exactly 4 people are eating exactly 2 food items, how many people are eating all 3 items?
Ready4

In a certain school 3/4 of boys and 2/5 of girls wear overcoats in winter. If the ratio of boys to girls in the school is 4:1, then what percentage of total students wear overcoats in winter?
Ready4

If P is a real number and list S is defined as {-4, 4, 2, 2, P}, what is the value of x?

(1) x is the mean of list S

(2) x is the median of list S
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.
191031 Three solid cheese balls with diameters of 2 inches, 4 inches, and 6 inches, respectively, were melted into a single cheese ball. What was the approximate diameter, in inches, of the new cheese ball? (The volume of a sphere is $$\frac{4}{3} \pi r^3$$, where r is the radius.)
There are 8 magazines lying on a table; 4 are fashion magazines and the other 4 are sports magazines. If 3 magazines are to be selected at random from the 8 magazines, what is the probability that at least one of the fashion magazines will be selected?
If the average (arithmetic mean) of 5 different numbers is 12, what is the median of the 5 numbers?(1) The median of the 5 numbers is equal to $$\frac{1}{3}$$ of the sum of the 4 numbers other than the median.(2) The sum of the 4 numbers other than the median is equal to 45.
Magoosh Three friends are buying a gift for a friend. Declan contributes 4 dollars more than$$\frac{1}{4}$$ the cost of the gift, Ed contributes 1 dollar less than $$\frac{1}{3}$$ the cost of the gift, and Frank contributes the remaining 22 dollars. What is the cost of the gift?
Manhattan If a, b, c, and d are integers and$$ ab^{2}c^{3}d^{4} > 0$$, which of the following must be positive? I. $$a^{2}cd $$II. $$bc^{4}d $$III.$$ a^{3}c^{3}d^{2} $$
Magoosh Region R is a square in the x-y plane with vertices J = (–1, –2), K = (–1, 4), L = (5, 4), and M = (5, –2). What is the probability that a randomly selected point in region R lies below the line 3x – 5y = 10?