All Questions ⁺⁰237771 Questions

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133

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A deck of cards has cards, red cards numbered - and blue cards numbered -

A deck of cards has cards, red cards numbered - and blue cards numbered -
read more ..

Guest May 13, 2023

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150

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Any help appreciated!!

I would appreciated if you helped me work through the answer so I can solve similar the questions?
Coco flips a penny, a nickel, and a quarter. Each coin is fair (meaning that heads and tails are equally likely to read more ..

Guest May 13, 2023

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139

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triangles

1. Find the area of triangle ABC if AB = 6, BC = 8, and angle ABC = 90 degrees.
2. If angle ABC = 135 degrees, and angle ACB = 30 degrees, what is angle BAC?

Guest May 13, 2023

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147

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plz help

Help how to solve
A certain square and a certain equilateral triangle have the same perimeter. The square and triangle are inscribed in circles, as shown below. If A is the area of the square and B is the area of the triangle, then read more ..

Guest May 13, 2023

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147

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Forecasting

What is your 95% credible interval for the number of people who will be alive in the year 3000 CE (including digital people)? Explain your reasoning by giving a roughly one-sentence justification for each important step of your reasoning.

Guest May 13, 2023

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149

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what is the answer I am having trouble solving it?

For , the amount of U.S. federal tax owed is a function of taxable income :
\[T(d) = \begin{cases}
0.1d & \text{if}~d \le 9875, \\
0.12(d-9875) + 987.5 & \text{if}~ 9876 \le d \le 40125, read more ..

Guest May 13, 2023

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144

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help123456789

1.
In a certain regular square pyramid, all of the edges have length 12. Find the volume of the pyramid.
2.
A rectangular prism has a total surface area of 56 Also, the sum of all the edges of the prism is 64. read more ..

Guest May 13, 2023

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149

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Bisectors

Help Im bad at geometry
In triangle AB, let the angle bisectors be BY and CZ. Given AB = 16, AY = 16, and CY = 16, find BC and BZ.

Guest May 13, 2023

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142

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Solve

Solve for the variable x in terms of y and z, assuming y \neq \frac{1}{2}:
xy + x = \frac{3x + 2y + z + y + 2z}{3}

Guest May 13, 2023

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133

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need help

Let ABC be a right triangle, and let H be the point on side AB so that CH is perpendicular to AB. Prove that (x + h)^2*(y + h)^2 = (a + b)^4.

Guest May 13, 2023

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153

2

Help plz

Catherine rolls a standard 6-sided die six times, and the product of her rolls is . How many different sequences of rolls could there have been? (The order of the rolls matters.)

Guest May 13, 2023

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151

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need help

Pearl writes down seven consecutive integers, and adds them up. The sum of the integers is equal to 21*4 times the largest of the seven integers. What is the smallest integer that Pearl wrote down?

Guest May 13, 2023

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118

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help

An arithmetic sequence begins: 3,8,13,18...
what is the 61st term of the sequence?
I don't really understand how you can get this sequence...

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Guest May 13, 2023

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164

4

Help Please!!

Caltulate. Answer should be in radians.

Guest May 13, 2023

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150

2

plz help

Real numbers a and b satisfy
a + ab = 250
a - ab = -240
Enter all possible values of a, separated by commas. read more ..

Guest May 13, 2023

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149

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Digits

Sophie's favorite number is a two-digit number. If she reverses the digits, the result is 45 less than her favorite number. Also, one digit is one less than double the other digit. What is Sophie's favorite number?

Guest May 13, 2023

May 12, 2023

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138

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+52

Sequences and Series

I have no idea how to do this stuff so when answering, please give me an answer and the reasoning behing it.
Levans writes a positive fraction in which the numerator and denominator are integers, and the numerator is 1 greater than read more ..

sussybaka May 12, 2023

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147

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IAHDoewfrugt

Find the ordered quintuplet $(a,b,c,d,e)$ that satisfies the system of equations\[ \begin{array}{rcrcrcrcrcr} a & + & 2b & + & 3c & + & 4d & + & 5e & = & 41, \\ 2a & + & 3b & + & 4c & + & 5d read more ..

Guest May 12, 2023

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143

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Solve

Solve 3a + 4b = 5a - 6b + 24 - 3a for a in terms of b.

Guest May 12, 2023

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144

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help plz

This is some very hard geometry
Triangle XYZ is equilateral. Points Y and Z lie on a circle centered at O, such that X is the circumcenter of triangle OYZ, and X lies inside triangle OYZ. If the read more ..

Guest May 12, 2023

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127

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+70

algebra

At the Hardey Fitness Center, the management did a survey of their membership. The average age of the female members was 40 years old. The average age of the male members was 25 years old. The average age of the entire membership was 30 years old. What read more ..

sheeshers May 12, 2023

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139

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Equations

1. Find all real numbers a that satisfy \frac{1}{64a^3 + 7} - 7 = 0.
2. Find all values of a that satsify the equation \frac{a}{3} + 1 = \frac{a + 3}{a} + 1.

Guest May 12, 2023

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