All Questions ⁺⁰230986 Questions

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99

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base numbers

What is the average of all positive integers that have four digits when written in base 3, but two digits when written in base 4? Write your answer in base 10.

Guest Nov 17, 2022

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142

1

math

By air, the distance from city A to city B is
3002
miles less than the distance from city C to city D. If the total of these two distances is
7858 read more ..

Guest Nov 17, 2022

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150

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Number theory

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?

Guest Nov 17, 2022

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128

1

x2+12x+25=15

Guest Nov 17, 2022

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142

2

+8

Helpppp!

ok soo i have 2 questions

Question 1: Find the area of the region enclosed by the graph of x2 + y2 = 2x - 6y + 6
read more ..

Newbestayforu123 Nov 17, 2022

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109

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Function

Let F(x) be the real-valued function defined for all real x except for x = 1 and x = 2 and satisfying the functional equation
F(x) + F((2x - 3)/x) = x.
Find the function F(x) satisfying these conditions. Write F(x) as read more ..

Guest Nov 17, 2022

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99

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geometry

In triangle ABC, M is the midpoint of AB. Let D be the point on BC such that AD bisects BAC and let the perpendicular bisector of AB intersect AD at E If AB=44, AC=30 and ME=10 then find the area of triangle BMD.

Guest Nov 17, 2022

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101

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Polynomials

Find a polynomial f(x) of degree 5 such that both of these properties hold:
f(x) is divisible by x^3.
f(x) + 2 is divisible by (x + 1)(x - 1) .
Write your answer in expanded form (that is, do not factor f(x)).

Guest Nov 17, 2022

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146

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literal equations

how many feet is 3.6 kilometers

Guest Nov 17, 2022

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119

1

what's 51=22+n

Guest Nov 17, 2022

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96

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Domain

The domain of the function r(x) = x/(1 - x) is (-inf,1) U (1,inf). What is the range?

Guest Nov 17, 2022

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144

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Algebra

Find x + 1/x if 3x + 2x = 2(x + 9) - 7 + x

Guest Nov 17, 2022

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93

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Average

The real numbers x,y and z satisfy the equations x+2y+3z=950 and 3x+2y=1450 and 2y + z = 680. What is the average of x, y and z?

Guest Nov 17, 2022

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89

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plz help

If x+y = 17 + xy and x^2 + y^2 = 145 + 2xy, then find xy

Guest Nov 17, 2022

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131

1

Help please.

Let $J$ and $K$ be given points along a certain line. There are exactly two other distinct points $U$ and $V$ on this line such that $UJ/UK=7$ and $VJ/VK=7$. Let $W$ be the midpoint of $\overline{UV}$. Calculate the ratio $WJ/WK$. read more ..

Guest Nov 17, 2022

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181

1

Expected value

Three standard fair 6-sided dice are rolled. What is the expected number of 6's rolled? (For example, if two 6's and a 5 are rolled, then the answer is 2.)

Guest Nov 17, 2022

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134

1

this is due tomorow!

in the high school band there are 2 percussionists on the sideine to every 13 marching instruments. if the high school band has 150 total members then how many percussionists are on the sidelines

Guest Nov 17, 2022

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111

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Exponential functions

The temperature, T degree celsius of a cup of coffee can be modelled by the equation T(x)+ 21+74(1.2)^-x, where x is the time in minutes.
a) What is the initial temperature?
b) What is the temperature after 10 minutes?
c) How many read more ..

Guest Nov 17, 2022

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134

2

Help

Band students at Campbell High School sell candy every year as a fundraiser. Last year, they sold 77 boxes of truffles and 82 boxes of peanut brittle, raising a total of $641. This year, they sold 77 boxes of truffles and 54 boxes of peanut brittle, read more ..

Guest Nov 17, 2022

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149

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help plz

If I give my brother 5 dollars, then we will have the same amount of money. If instead, he gives me 14 dollars, then I'll have three times as much money as he will have. How much money does my brother currently have (in dollars)?

Guest Nov 17, 2022

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155

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bisectors

Let AB be a diameter of a circle, and let C be a point on the circle such that AC=8 and BC=4 The angle bisector of ACB intersects the circle at point M Find CM.

Guest Nov 17, 2022

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132

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help quadratic

a, b, and c are constants such that the quadratic ax^2 + bx + c can be expressed in the form 2(x-4)^2 + 8. When the quadratic 3ax^2 + 2bx + c(for the same values of a, b, and c) is expressed in the form n(x-h)^2 + k, what is h?

Guest Nov 17, 2022

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143

2

Hard geo

Arc $AC$ is a quarter-circle with center $B$. The shaded region $ABC$ is "rolled" along a straight board $PQ$ until it reaches its original orientation for the first time with point $B$ landing at point $B'$ . If $BC=\frac{2}{\pi}$ cm, what read more ..

Guest Nov 17, 2022

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101

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Rectangles

Two rectangles overlap, as shown below. Find the area of the overlapping region (which is shaded) if AB = BE = 2 and AD = ED = 4.

read more ..

Guest Nov 17, 2022

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