All Questions ⁺⁰231266 Questions

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146

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+334

apply use of squeeze theorem

$$\lim_{x\to\infty} \frac{x}{x+sin(x)}$$

hipie Nov 28, 2022

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193

2

Help plz (pretty plz?)

The equation y = -16t^2 + 60t describes the height (in feet) of a projectile launched from the ground at 60 feet per second upward. In how many seconds will the projectile first reach 56 feet in height? Express your answer as a decimal rounded to the nearest read more ..

Guest Nov 28, 2022

+1

181

2

+256

A single die is rolled 10 times

A single die is rolled 10 times, what is the probability that a six appears 9 times, given that it appears at least 9 times?

BWStar Nov 28, 2022

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94

0

counting

A certain club has 50 people, and 10 members are running for president. Each club member either votes for one of the 10 candidates, or can abstain from voting. How many different possible vote totals are there?

Guest Nov 28, 2022

+1

149

1

Probability

In Ms. Q's deck of cards, every card is one of four colors (red, green, blue, and yellow), and is labeled with one of seven numbers (1, 2, 3, 4, 5, 6, and 7). Among all the cards of each color, there is exactly one card labeled with each number. The read more ..

Guest Nov 28, 2022

0

162

3

+4

help pls

What is the value of x + y + z when 6x + 5y - 2z = -4 and 4x + 5y + 12z = 54?

i tried combining and getting rid of y but it didnt work. help anyone?

echosonq Nov 28, 2022

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159

2

Range

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

Guest Nov 28, 2022

0

108

0

need help

I work on this long time. Can anyone help?

We are looking to factor 23x^2 + kx - 5 + x^2 - 3. Some values of k allow us to factor it as a product of linear binomials with integer coefficients. what are all such values of k? read more ..

Guest Nov 28, 2022

0

122

2

Precalc

Consider the following points on the graph of y=sin(x)

Say that the terminal points of angles a and b are as follows:
Terminal Point Of a = (c1,c2) read more ..

Guest Nov 28, 2022

0

193

1

Probability question

A stick is broken at two points, at random. If the length of the stick is 6, then what is the probability that all three resulting pieces are shorter than 3 units?

Guest Nov 28, 2022

0

119

1

help pls

Arrange the following numbers in increasing order (smallest first, biggest last):

A = 2*1/2*4*1/6
B = 12*128 read more ..

Guest Nov 28, 2022

0

99

0

Tangent circles

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

Guest Nov 28, 2022

Nov 27, 2022

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128

1

Tangents

The tangent to the circumcircle of triangle WXY at X is drawn, and the line through W that is parallel to this tangent intersects XY at Z. If XY = 15 and WX = 5, find YZ.

Guest Nov 27, 2022

0

196

5

Probability

The following cards are dealt to three people at random, so that everyone gets the same number of cards. What is the probability that everyone gets a red card?

[There are three red cards and three blue cards]

●●●●●

Guest Nov 27, 2022

0

103

0

F(x) = -2x1 + x2 + 2x3 + 1,5x4 + x5  min

F(x) = -2x1 + x2 + 2x3 + 1,5x4 + x5  min
x1 - 2x2 + 2x3 - x4 = 12
2x2 +x3 +x4 + x5 =10
2,5x1 + x2 -x3 =< 15 read more ..

Guest Nov 27, 2022

0

137

1

Rate problem

Carissa the chessplayer is a very, very slow walker. In fact, she walks at 100 meters per hour when walking uphill, 180 meters per hour when walking across flat ground, and 250 meters per hour when walking downhill. One day, Carissa walks read more ..

Guest Nov 27, 2022

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107

0

Geometry Proof

I have most of the problem down. However, what would be the reasoning for the 5th, 6th, and 12th lines?

Guest Nov 27, 2022

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103

0

geometric series

For a real number r, let s(r) denote the set of real numbers that can be expressed in the form
a1 r + a2 r^2 + a3 r^3 + ...
with an infinite number of terms, where ai in {0,1}
(a) Show that 1/2 an element in S(1/4)
(b) Show that 1/5 read more ..

Guest Nov 27, 2022

0

162

4

Algebra question

Find all real numbers x such that
(3^x - 27)^3 + (27x - 3)^3 = (3x + 27x - 30)^3

Guest Nov 27, 2022

0

152

1

+96

so altitude? and im just confused where to i stary

An altitude of a triangle is a line from a vertex of the triangle that is perpendicular to the line containing the other side. Suppose triangle ABC has vertices A(3, 4), B(−4,−3), and C(0,−5). Find an equation for the line that contains the altitude through read more ..

coolkidslovemath1982 Nov 27, 2022

0

150

1

help quadratic

What is the distance between the two intersections of y = x^2 and x + y = 7?

Guest Nov 27, 2022

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