All Questions ⁺⁰237784 Questions

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138

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Probability

When it rains, every student in Margo's school brings a raincoat, an umbrella, or both. And of the students bring both. The total number of umbrellas brought is equal to twice the number of raincoats.
What percent of the read more ..

Guest Apr 10, 2023

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150

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algebra 2

Let f(x) = (2x^2-50) / (x^2+2x-15). Find the values of x for which f(x) is not defined. Enter all values, separated by commas

Guest Apr 10, 2023

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142

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precalc

Plz help with parametric equations
The position of a particle is given by the parametric equations
x = 1 + sin pi*t - cos pi*t
y = 3*sin pi*t + 2*cos pi*t read more ..

Guest Apr 10, 2023

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143

0

Algebra

Let S be the set of all real numbers of the form
a1/3 + a2/3^2 + a3/3^3 + ....
where a_i \in {0, 1, 2} for all i.
(a) Is the number 1/7 in the set S?
(b) Is the number 1/4 in the set S? read more ..

Guest Apr 10, 2023

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154

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Algebra

Let a and b be real numbers such that a - b = 1 and a^3 - b^3 = 1
(a) Find all possible values of ab
(b) Find all possible values of a+b
(c) Find all possible values of a and b

Guest Apr 10, 2023

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138

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counting

You are given the 4 x 4 grid below.
(a) Find the number of ways of placing 8 counters in the squares (at most one counter per square), so that each row contains exactly two counters.
(b) Find the number of ways read more ..

Guest Apr 10, 2023

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155

1

question help needed

Two points on a circle of radius 1 are chosen at random. Find the probability that the distance between the two points is at most 1.

Guest Apr 10, 2023

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138

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geometry

Let B, A, and D be three consecutive vertices of a regular -gon. A regular heptagon is constructed on AB with a vertex C next to A Find angle BCD in degrees.

Guest Apr 10, 2023

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137

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counting

Find the number of positive integers that satisfy both the following conditions:
Each digit is a 1 or a 2
The sum of the digits is 3

Guest Apr 10, 2023

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133

1

Tangent circles

The two circles below are externally tangent. A common external tangent intersects line PQ at R. Find QR.

Guest Apr 10, 2023

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151

1

Area of Circles

A circle with a radius of 14 feet is cut into 8 equal pieces. How many square feet are 3 of the pieces? Use 22/7 for π.
A. 1,155 square feet
B. 231 square feet
C. 22 square feet read more ..

Guest Apr 10, 2023

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139

1

+1348

Help plz

Help, geometry is so hard!
In the diagram below, D is a point on segment CE such that segments AD and BE are parellel and point A is not on segment BC. Line segments AD and BC intersect at point P.
If read more ..

sandwich Apr 10, 2023

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167

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+1348

Help plz

I need help with geometry.
In triangle ABC, the angle bisector of angle BAC meets AC at D. If angle BAC = 60, angle ABC = 60, and AD = 24, then find the area of triangle ABC.

sandwich Apr 10, 2023

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132

0

counting

Help how do I count this
Find the number of six-digit numbers, where the sum of the digits is divisible by 8.

Guest Apr 10, 2023

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155

0

Algebra

Help the class didn't cover this
Each graph below is the graph of an exponential function of the form ka^x (where a > 0). Match each graph with the correct option.

Guest Apr 10, 2023

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164

1

Help please

If I give my brother 5 dollars, then we will have the same amount of money. If instead he gives me 12 dollars, then I'll have twice as much money as he will have. How much money does my brother currently have (in dollars)?

Guest Apr 10, 2023

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156

2

Where did CPhil go?

I noticed he dissapeared some time ago, where did he go?

Guest Apr 10, 2023

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168

2

algebra

A certain drug is made from only two ingredients: compound A and compound B. There are 5 milliliters of compound A used for every 7 milliliters of compound B. If a chemist wants to make 708 milliliters of the drug, how many milliliters of compound A are read more ..

Guest Apr 10, 2023

0

134

1

geometry

In tetrahedron ABCO, angle AOB = angle AOC = angle BOC = 90^\circ. A cube is inscribed in the tetrahedron so that one of its vertices is at O, and the opposite vertex lies on face ABC. Let OA = 1, OB = 1, OC = 1. Show that the read more ..

Guest Apr 10, 2023

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159

3

I actually need help as quick as you can plz :D

1. Anthony has a sink that is shaped like a half-sphere. The sink has a volume of 2000/3 pi in.^3 One day, his sink clogged. He has to use one of two cylindrical cups to scoop the water out of the sink. The sink is completely full when Anthony begins scooping.
(a) read more ..

Guest Apr 10, 2023

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