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229743 Questions
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167
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Percent
The table shows the percent of families in Mathville that have 0, 1, 2, 3 and 4 or more children. If there are a total of 10,250 families, how many are there with no children?
Number of children 0 1 2 3 4+
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Guest
Jul 12, 2022
Jul 11, 2022
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127
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geometry
ABCD is a square with side length 2 cm. E is the midpoint of CD, and BF is perpendicular to AE. What is the area of ECBF, in square centimeters? Express your answer as a decimal to the nearest tenth.
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Guest
Jul 11, 2022
0
169
2
I NEED HELLLLLPPPPP
The equation $y = -16t^2 - 60t + 54$ describes the height (in feet) of a ball thrown downward at 60 feet per second from a height of 54 feet from the ground, where $t$ represents time, measured in seconds. In how many seconds will the ball hit the ground?
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Guest
Jul 11, 2022
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132
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Algebra
On Wednesday, 1/3 of the students in Mr. Short's homeroom had drama practice, and 3/4 of his other homeroom students had band practice. If 8 students had band practice, how many students are in Mr. Short's homeroom?
Guest
Jul 11, 2022
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231
3
Trigonometry (pls help)
A square with an area of 9 is surrounded by four congruent right triangles, forming a larger square with an area of 89. Find
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Guest
Jul 11, 2022
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178
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help
What is the greatest common divisor of $121^2 + 233^2 + 345^2$ and $120^2 + 232^2 + 346^2$?
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Guest
Jul 11, 2022
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167
1
Algebra
The 5th power of a positive number is equal to the product of 1/3 and the 6th power of the number. What is the ratio of this number's 12th power to its 9th power? Express your answer as a common fraction.
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Guest
Jul 11, 2022
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235
2
+13
Help and thank you in advance!
Consider the following diagram:
Then what are the lengths of AE and CE equal to, in that order?
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Shinigami
Jul 11, 2022
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158
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Counting question
How many ways are there to put 6 balls in 3 boxes if the balls are distinguishable and the boxes are distinguishable?
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Guest
Jul 11, 2022
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151
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+24
Algebra 2 05.03
Explain how to solve 5^x-2 = 8 using the change of base formula logby= log y/log b. Include the solution for x in your answer. Round your answer to the nearest thousandth.
Pythonkil06
Jul 11, 2022
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121
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quadratic
The graph of a certain quadratic y = ax^2 + bx + c is a parabola with vertex (4,0) which passes through the point (5,7). What is the value of a?
Guest
Jul 11, 2022
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181
1
triangles
A triangle has integer side lengths 2, 5 and x. What is the area of the triangle if x = 6?
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Guest
Jul 11, 2022
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169
2
Graphs
Below is the graph of y = a tan bx for some positive constants a and b. Find ab.
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Guest
Jul 11, 2022
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168
2
Trigonometry (helppppp)
Find the smallest positive integer x for which the expression is not defined. (The sine function is evaluated in terms of radians.)
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Guest
Jul 11, 2022
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134
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Counting
Kurt is creating a bouquet of flowers for his mother. He has a selection of roses, lilies, orchids and violets from which to create a bouquet of a dozen flowers. Kurt's mother loves orchids, so his bouquet will have at least eight orchids. How many
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Guest
Jul 11, 2022
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140
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geometry
A circle is placed in a 90 degree corner, and that circle is touching both walls of that corner. a point on the circumference of the circle is 18 inches from one wall and 28 inches from the other wall. what is the radius of the circle? if some work could
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Guest
Jul 11, 2022
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129
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Algebra
If 3/(x + 2) = (y + 2)/3 and x and y are integers, what is the sum of all possible values x?
Guest
Jul 11, 2022
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194
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sequences
The sequence a_n has the property that a_n = a_{n-1} + 2a_{n-2} for n >= 2. It is also true that a_0 = 4 and a_3 = 6. What is the value of a_5? Express your answer as a common fraction.
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Guest
Jul 11, 2022
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203
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hlp
Use proof by contradiction to show that there is no greatest positive rational
number.
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Guest
Jul 11, 2022
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152
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Probability
Jaylin has a wooden cube which is painted blue on the outside. She cuts the cube into 1000 identical cubes, some of which have some sides painted blue, then rolls the resulting cubes like dice. The probability that all blue faces land up after Jaylin
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Guest
Jul 11, 2022
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179
1
Does not make sense
https://web2.0calc.com/questions/help_54902
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Guest
Jul 11, 2022
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204
1
plz help asap
Use proof by contradiction to show that there exist no integers a and b for which
25a + 15b = 1.
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Guest
Jul 11, 2022
0
140
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arithmetic
What is the value of the result when four million three hundred twenty-five thousand one hundred thirty-one is subtracted from four million two hundred twenty-five thousand sixty-two?
Guest
Jul 11, 2022
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205
1
algebra question
At a concert for the band Algal Rhythms, 75% of the tickets were sold at the full price of 20 dollars. The remaining 25% of tickets were sold at a discounted price of 15 dollars. What was the average selling price of a ticket at the
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Guest
Jul 11, 2022
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