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alice

Questions (307)

The grid below is made up of line segments, like the line segment in red. There are a number of paths that go from A to B in the
1. 1 answer
2. 92 views
Right triangle $XYZ$ has legs of length $XY = 12$ and $YZ = 6$. Point $D$ is chosen at random within the triangle $XYZ$. What is
1. 1 answer
2. 124 views
The numbers $x_1,$ $x_2,$ $x_3,$ $x_4$ are chosen at random in the interval $[0,1].$ Let $I$ be the interval between $x_1$ and
1. 1 answer
2. 100 views
Fill in the blanks to make the equation true. (Each blank should contain an integer.)n/k = ? *(n - 2)/(k - 2) + ?*(n - 2)/(k -
1. 1 answer
2. 75 views
For a positive integer n, the rational number r satisfies2n/n + 2n/(n + 1) = r*2n/n - n/(n - 1) Express r in terms of n. (Your
1. 1 answer
2. 87 views
For non-negative integers $a$ and $b,$ where $a \ge 2$ and $b \ge 2,$ simplify(a + b)/2 - a/2 - b/2
1. 1 answer
2. 33 views
Find the number of paths from $A$ to $I,$ if each step must be in a right-ward direction. (For example, one possible path is $A
1. 1 answer
2. 58 views
Find all $x$ which satisfy both the inequalities $0\ge 54x+144-18x+108$ and $0>12-20x+30x-66$. Express your answer in interval
1. 0 answers
2. 83 views
Find all $x$ such that neither $2x-5$ nor $-20x+13x-7$ is in the interval $(8,12)$.
1. 1 answer
2. 78 views
Find all $x$ so that neither $-2(6+2x)\le -16-x+8-5x$ nor $-3x\ge 18-7x+25$.
1. 1 answer
2. 54 views
Find all $x$ such that neither $2+x+5x$ nor $2-x-8-3x$ is in the interval $(-2,11]$. Express your answer as an interval or as a
1. 1 answer
2. 51 views
Find all values of $x$ which do not satisfy $$1 \le 4-3x+5x < 10-8x.$$ Express your answer in interval notation.
1. 1 answer
2. 80 views
Two points on a circle of radius $1$ are chosen at random. Find the probability that the distance between the two points is at
1. 1 answer
2. 91 views
Suppose we have a bag with $10$ slips of paper in it. Eight slips have a $5$ on them and the other two have an $12$ on them.(a)
1. 1 answer
2. 108 views
The distance between the points $A$ and $B$ is $\sqrt{5}.$ If $A = (a,-1)$ and $B = (2,2a-1),$ then find the sum of all possible
1. 1 answer
2. 77 views
A line passes through the points $A,$ $B,$ and $C.$ If $A = (-2,5),$ $B = (-3,1),$ and $C = (4,y),$ then find $y.$
1. 1 answer
2. 63 views
A line has a slope of $m,$ and its $y$-intercept is $(0,b)$. If $m = 2$ and $b = 2,$ then what is the $x$-intercept of the line?
1. 1 answer
2. 64 views
A line passes through the points $A,$ $B,$ and $C.$ If $A = (-2,5),$ $B = (-3,1),$ and $C = (4,y),$ then find $y.$
1. 1 answer
2. 61 views
Find the distance between the $x$-intercept and the $y$-intercept of the graph of the equation $3x - 6y = 12 + 2x - 4y$.
1. 1 answer
2. 62 views
A line passes through the points $P$ and $Q.$ If $P = (-8,2)$ and $Q = (1,7),$ then write the equation of this line in the form
1. 1 answer
2. 75 views
Line $\ell_1$ is horizontal and passes through $(2,-8)$. Line $\ell_2$ is vertical and passes through $(-7,5)$. Line $\ell_3$
1. 1 answer
2. 127 views
Find all $x$ such that both $2x$ and $3x-7$ are in the interval $(-1,12)$.
1. 0 answers
2. 38 views
Find all $x$ such that $1-3x < x + 8 \le 7-x$. Give your answer in interval notation.
1. 1 answer
2. 38 views
Find all $z$ such that neither $2+z-5z$ nor $2-z+8z$ is in the interval $(-7,13]$. Express your answer as an interval or as a
1. 1 answer
2. 63 views
Find all $w$ so that neither $-2(6+2w)\le -16 + 7w$ nor $-3w\ge 18 - 5w + 3$.
1. 1 answer
2. 34 views
a) A baking club wants to form an executive committee. There are 12 people in the baking club, including Mark. In how many ways
1. 1 answer
2. 137 views
A palindrome is a number that is the same when read forwards and backwards, such as $43234$. Find the number of $4$-digit
1. 1 answer
2. 105 views
A standard deck of cards has $52$ cards divided into $4$ suits, each of which has $13$ cards. Two of the suits ($\heartsuit$ and
1. 1 answer
2. 71 views
The equation $x^3 + 8x^2 - 4x + c = 6x^2 - 12x$ has three roots, one of which is the sum of the other two. What is $c$?
1. 1 answer
2. 40 views
Phoenix hiked the Rocky Path Trail last week. It took four days to complete the trip. The first two days she hiked a total of
1. 1 answer
2. 131 views
Given $m\geq 2$, denote by $b^{-1}$ the inverse of $b\pmod{m}$. That is, $b^{-1}$ is the residue for which $bb^{-1}\equiv
1. 1 answer
2. 102 views
A right pyramid has a square base. The area of each triangular face is one-third the area of the square face. If the total
1. 1 answer
2. 115 views
Find all $u$ such that neither $2u$ nor $-2u + 7$ is in the interval $(-\infty,1)$.
1. 1 answer
2. 63 views
The sum of three numbers $a, b$ and $c$ is $60$. If we decrease $a$ by $1$, we get the value $N$. If we increase $b$ by $2$, we
1. 1 answer
2. 47 views
Let $a$ and $b$ be real numbers such that $a^2b^3=\frac{32}{27}$ and $\frac{a}{b^3}=\frac{27}{4}$. What is $a+b$?
1. 1 answer
2. 84 views
The summary of a survey of 500 students listed the following totals:* 259 students did math homework * 219 students did English
1. 1 answer
2. 169 views
The summary of a survey of 500 students listed the following totals:* 259 students did math homework * 219 students did English
1. 1 answer
2. 182 views
Sets $A$ and $B$, shown in the Venn diagram, are such that the total number of elements in set $A$ is twice the total number of
1. 1 answer
2. 103 views
What is the area in square units of the quadrilateral $XYZW$ shown below?
1. 1 answer
2. 80 views
In isosceles triangle ABC, we have AB=AC=4. The altitude from B meets AC at H. If AH=2(HC) then determine BC.
1. 1 answer
2. 71 views
(1) Let a_1, a_2, a_3 be real numbers such that|a_1 - a_2| + 2 |a_2 - a_3| + 3 |a_3 - a_1| = 1. What is the largest possible
1. 1 answer
2. 152 views
Let\[f(x) = \left\lfloor\frac{2 - 3x}{2x + 8}\right\rfloor.\] Evaluate $f(1)+f(2) + f(3) + \dots + f(999)+f(1000).$ (This sum
1. 1 answer
2. 130 views
Find all values of $t$ such that $\lfloor t\rfloor = 3t + 4/5$. If you find more than one value, then list the values you find
1. 1 answer
2. 118 views
For what values of $j$ does the equation $(2x + 7)(x - 4) = -31 + jx$ have exactly one real solution? Express your answer as a
1. 1 answer
2. 229 views
Find the value of $v$ such that $\frac{-21-\sqrt{201}}{10}$ a root of $5x^2+21x+v = 0$.
1. 1 answer
2. 110 views
The quadratic equation $x^2+4mx+m = 2x - 6$ has exactly one real root. Find the positive value of $m$.
1. 3 answers
2. 80 views
In triangle $ABC$, we have that $AB = AC,$ and $\overline{AD}$ is an altitude. Also, $E$ is a point on $\overline{AC}$ such that
1. 1 answer
2. 115 views
Let $A$, $B$, $C$, $D$, and $E$ be points in the plane such that:* $D$ is on line $AE$ with $\overline{CD} \perp \overline{AE}$.
1. 1 answer
2. 116 views
In triangle $ABC,$ altitudes $\overline{AD}$ and $\overline{BE}$ intersect at $H$. If $\angle BAC = 40^\circ$ and $\angle ABC =
1. 1 answer
2. 86 views
6. In marketing and promoting themselves and their work, individual professional accountants are required by IFAC`s code of
1. 1 answer
2. 121 views
Suppose that the amount of time it takes to build a highway varies directly with the length of the highway and inversely with
1. 1 answer
2. 138 views
Wispy, feathery clouds are what clouds
1. 1 answer
2. 311 views
The number of ____ always differs in atoms of different elements.A. Electrons B. Protons C. Neutrons D. Nuclei
1. 2 answers
2. 505 views
The probability Barry is either on time for school or there is no sickpassenger on the train is 8/9. The probability Barry will
1. 0 answers
2. 343 views
danielle spent 2/5 of her paycheck on bills. Her water bill was 1/6 of what she spent on bills. What part of her paycheck went
1. 1 answer
2. 284 views
easy its not help me
1. 1 answer
2. 170 views
i need to write a research paper on healthcare. Ive been looking for two (at most two week old) reliable sources that really
1. 1 answer
2. 435 views
If delta G (Gibbs) is positive and you are trying to find at what temperature the reaction is spontaneous would the formula be:
1. 1 answer
2. 662 views
how was the roman republic's goverment set up?people elected representatives to make decisions for them. the emperor chose
1. 1 answer
2. 878 views
how old are you Ms. Sue?
1. 3 answers
2. 352 views
Evaluate the integral. (Remember to use absolute values where appropriate. Use C for the constant of integration.)(x^2−x+12)/(
1. 1 answer
2. 2,021 views
Evaluate the integral.from 0 to π/2 sin^3(θ)cos^5(θ) dθ
1. 1 answer
2. 561 views
four times a number plus three times the sum of a number and four is equal to negative nine
1. 1 answer
2. 390 views
What is the distance between 86.25 to -17.75
1. 5 answers
2. 467 views
Fishing hook G is let down 2 1/2 times its present depth. where is fishing hook G now?FISHING HOOK G = -6 2/3
1. 8 answers
2. 1,877 views
Fishing hook E is dropped 2.5 times its present depth. where is fishing hook E now?NOTE: FISHING HOOK E is -7.1 is the answer
1. 6 answers
2. 2,266 views
Did Christopher Columbus's' efforts to gain power and wealth compromise his morals?
1. 4 answers
2. 1,017 views
what are three advantages of visiting the city-state of sparta (cultural activities, recreation, athletics, sports,
1. 1 answer
2. 567 views
how to compute charging and discharging time of capacitor in voltage to frequency converters.
1. 0 answers
2. 380 views
1.write a C program to reverse the elements of array using recursive function(without using for and while loop).2. write a C
1. 1 answer
2. 527 views
The noise from a power mower was measured at 108 dB. The noise level at a rock concert was measured at 119 dB. Find the ratio of
1. 1 answer
2. 2,243 views
A roasted turkey is taken from an oven when its temperature has reached 185°F and is placed on a table in a room where the
1. 1 answer
2. 985 views
an = 3a(n − 1) + 6 and a1 = 1a4=87 a5=249 this is what I got but the answer were incorrect in the sequence.
1. 1 answer
2. 340 views
so I was trying to do this based on logarithm scales.The noise from a power mower was measured at 108 dB. The noise level at a
1. 1 answer
2. 687 views
Can anybody show me step by step pls?A man invests $3000 in an account that pays 7.5% interest per year, compounded quarterly.
1. 3 answers
2. 1,102 views
what can a person do to relax his muscles?
1. 3 answers
2. 469 views
analyse the tenants of psycholanalsis
1. 2 answers
2. 395 views
A moon rock collected by a U.S. Apollo mission is estimated to be 4.50 billion years old by uranium/lead dating. Assuming that
1. 2 answers
2. 4,350 views
in the proportion 2/8=8/32, which numbers is the geometric mean of the other two numbers?
1. 1 answer
2. 1,728 views
A 0.2kg ball is attached to a rope and is whirled in a horizontal circle. Calculate the maximum speed of the ball if the length
1. 0 answers
2. 599 views
A wheel with radius of 25cm turning at 120 rpm uniformly increases its frequency to 660 rpm in 9s. Determine:i) the centripetal
1. 0 answers
2. 1,173 views
calculate the mass of Cuso4.5H2O required to prepare 500 cm3 of a 0.400 m/dm-3 solution
1. 2 answers
2. 1,013 views
46,318.97
1. 1 answer
2. 315 views
calculate the mass of Cuso4.5H2O required to prepare 500 cm3 of a 0.400 m/dm-3 solution
1. 1 answer
2. 745 views
Describe an experiment you might perform to determine which leg muscles of a frog are important for jumping long distances.
1. 0 answers
2. 1,064 views
alice builds a model house she uses a scale of 1:20 the height of the real house is 10 meters.(i) what is the height of the
1. 1 answer
2. 1,854 views
We hang a mass of 500kg on a cylindrical steel rod of radius 0.5 cm and length 1 m. How much will the rod stretch? Young's
1. 1 answer
2. 570 views
What is the ratio of the spin angular momentum of the earth and its orbital angular momentum about the sun. The mean radius of
1. 0 answers
2. 559 views
The equation: T= 2* pi* sqrt(2/3L/9.8) Solve for L. Please show the solution step by step. The square root is giving me trouble
1. 1 answer
2. 1,246 views
The largest ballon ever flown had a volume of 53 million cubic feet. The thickness of the fabric is only 0.013mm. The balloon
1. 1 answer
2. 496 views
I want to lift a 3000kg car with a hydraulic jack. With a lever, I can easily build up by hand a force = 300 N on a piston of
1. 1 answer
2. 556 views
a man can row a bangka at a rate of 5 km/h in still water. It takes 10 minutes longer to row upstream a distance of 2km than he
1. 1 answer
2. 507 views
A 1200W engine supplies a force of 90N to move an object at a constant velocity. With what velocity will it move?
1. 1 answer
2. 398 views
At an airport, a flight controller was in a tower 40m above the ground. When she first observed a plane it was at an angle of
1. 1 answer
2. 737 views
a sample of 15.00 g of an unkown metal chloride, MCl2 is dissolved in 75.0 mL water. the boiling point of the resulting solution
1. 5 answers
2. 643 views
A ray of light of vacuum wavelength 550 nm traveling in air enters a slab of transparent material. The incoming ray makes an
1. 1 answer
2. 8,356 views
A student takes a 10-question true-false and randomly guesses the answer to each question. Suppose a correct answer is worth 1
1. 0 answers
2. 813 views
A spring with a spring constant of 35.0 N/m is attached to diﬀerent masses, and the system is set in motion.What is the period
1. 0 answers
2. 455 views
A spring with a spring constant of 35.0 N/m is attached to diﬀerent masses, and the system is set in motion.What is its period
1. 0 answers
2. 392 views
A basket contains 15 red numbered balls and 10 white numbered balls. A sample of five balls is selected. How many samples
1. 1 answer
2. 1,081 views

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