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Post New Question
All Questions
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233058 Questions
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326
1
Math help
In the year 2006, a person bought a new car for $13500. For each consecutive year after that, the value of the car depreciated by 9%. How much would the car be worth in the year 2009, to the nearest hundred dollars?
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Guest
Oct 11, 2021
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196
0
Counting
1. In how many ways can you spell the word FOOT in the grid below? You can start on any letter F, then on each step you can step one letter in any direction (up, down, left, right, or diagonal)
\begin{array}{cccc} F & F
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Guest
Oct 11, 2021
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260
1
Coordinates
Points A, B, and C are given in the coordinate plane. There exists a point Q and a constant k such that for any point P,
PA^2 + PB^2 + PC^2 = 3*PQ^2 + k.
If A = (4,-1), B = (8,-2), and C = (1,-11), then find the constant
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Guest
Oct 11, 2021
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276
1
Geometry
D is on side AB of Triangle ABC. We know triangle ABCtriangle ACD and angle A=40. If BC=BD, what is angle B in degrees?
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Guest
Oct 11, 2021
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378
6
Functions (domain & range) question please help
The functions f and g are defined as follows:
for
for
Find the domain and range of , and the domain and range of
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Guest
Oct 11, 2021
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299
1
trigonometry
At a horizontal distance of 99 meters from the base of a tower, the angle of elevation to the top is 15 degrees. Find the line of sight distance to the top of the tower to the nearest meter. Enter a number answer only.
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Guest
Oct 11, 2021
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234
1
Digit question
What is the average of all positive integers that have four digits when written in base 3, but two digits when written in base 5? Write your answer in base 10.
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Guest
Oct 11, 2021
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337
1
Digit question
What is the smallest number larger than 3456 whose digits add up to 18?
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Guest
Oct 11, 2021
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178
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help pleaze
A parabola with an equation has a vertical line of symmetry and goes through the two points and. The quadratic has two real roots. The greater root is. What is n?
Guest
Oct 11, 2021
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298
1
Algebra
Two numbers, if the first one increases by 1, and the second one decreases by 1, then their product increases by 2020. If the first number decreases by 7, and the second one increases by 7, what value does the product decrease?
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Guest
Oct 11, 2021
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221
1
geometry
The angles of a triangle are 2xº, 5xº, (x+40)º. Find x.
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Guest
Oct 11, 2021
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171
0
geometry
The angles of a quadrilateral are xº, 2xº, 4xº, 8xº. Find x
Guest
Oct 11, 2021
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344
1
lucky numbers
A positive integer k is called a "lucky" number if the units digit of k^6 is 4. How many lucky numbers smaller than 1000 are there?
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Guest
Oct 11, 2021
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387
1
tan^1
how to type tan^-1 ?
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Guest
Oct 11, 2021
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224
1
help with graphing
Given that the point (9,7) is on the graph of y=f(x), there is one point that must be on the graph of 2y=f(x)/2. What is the sum of coordinates of that point?
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Guest
Oct 11, 2021
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328
1
Algebra
Rewrite the expression $g^4 + 12g^2 + 9 - 6g^2 + 7$ in the form $c(g^2 + p)^2 + q$. What is $q$?
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Guest
Oct 11, 2021
+1
417
9
Inequality question
If w, x, y, and z are positive real numbers such that w + 2x + 3y + 4z = 8 then what is the maximum value of wxyz?
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Guest
Oct 11, 2021
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343
1
need help
For each number from 0 to 99, Andrew wrote down the product of its digits. What is the mean of the numbers andrew wrote down?
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Guest
Oct 11, 2021
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192
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Precalc
In triangle ABC, AB = BC = 25 and AC = 40. What is sin angle ABC?
Guest
Oct 11, 2021
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203
0
Parabola
A parabola with equation y=ax^2+bx+c contains the points $(-3,8)$, $(1,8)$, and (0, 0). Find the value 100a+20b+c.
Guest
Oct 11, 2021
Oct 10, 2021
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377
2
+96
Modulus question! Help please
What is the smallest positive integer such that
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kanisan
Oct 10, 2021
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198
0
help math
Each row of a seating arrangement seats 7 or 8 people. $47$ people are to be seated. How many rows seat exactly 8 people if every seat is occupied?
Guest
Oct 10, 2021
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233
1
Number Theory
The Lucas sequence is the sequence 1, 3, 4, 7, 11,... where the first term is 1, the second term is 3 and each term after that is the sum of the previous two terms. What is the remainder when the $100^{th}$ term of the sequence is divided by $9$?
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Guest
Oct 10, 2021
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182
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Quadratic
Find the product of all positive integer values of c such that 3x^2 + 17x + c = 0 has two real roots.
Guest
Oct 10, 2021
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