All Questions ⁺⁰228012 Questions

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venn diagrams

The summary of a survey of 500 students listed the following totals:
* 259 students did math homework
* 219 students did English homework
* 238 students did science homework
* 108 students did English and science homework read more ..

sandwich Sep 11, 2023

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+663

help plz!

Sets $A$ and $B$, shown in the Venn diagram, are such that the total number of elements in set $A$ is twice the total number of elements in set $B$. Altogether, there are $9$ elements in the union of $A$ and $B$, and their intersection has $3$ elements. read more ..

sandwich Sep 11, 2023

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kilometers

0.72 AU in kilometers

Guest Sep 11, 2023

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how do I find an answer to an equation using watts and meters?

how do I find an answer to an equation using watts and meters?
Equation looks like this:
6.9*10^36 Watts / 4π (5.68* 10^16 meters)^2
How can I put this into the calculator to get the answer read more ..

ElectricPavlov ●

Guest Sep 11, 2023

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+443

Isosceles triangle

In isosceles triangle ABC, we have AB=AC=4. The altitude from B meets AC at H. If AH=2(HC) then determine BC.

maximum Sep 11, 2023

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+4

present value in investments

Janine is 21 years old. She opens an account that pays 1.25% interest, compounded monthly. She sets a goal of saving $10,000 by the time she is 24 years old. How much must she deposit each month?

ElectricPavlov ●

iraimaramirez04 Sep 11, 2023

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+113

Even and odd functions

Let $e(x)$ be an even function and let $o(x)$ be an odd function, such that
\[e(x) + o(x) = x^2 + x^3\]
for all $x.$ Let $f(x) = e(x) + o(x).$ Find $f(2).$

bingboy Sep 11, 2023

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solve this equation

Guest Sep 11, 2023

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+113

quadratic

Find the non-zero value of $a$ such that the quadratic equation $ax^2+8x+4=6x-40$ has only one solution.

ElectricPavlov ●●

bingboy Sep 11, 2023

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+113

digits

All of the digits of a three-digit integer are distinct and non-zero. Furthermore, the three-digit integer is divisible by 25. Find the largest three-digit integer that has these properties.

bingboy Sep 11, 2023

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divisors

How many integers from 1 to 9 are divisors of the five-digit number 24,551?

Guest Sep 11, 2023

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+113

interval

Find all real numbers $x$ such that $\frac{-2x+5}{7} + \frac{3x-1}{2}$ is in the interval $[0,1)$.

bingboy Sep 11, 2023

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quadratic

There is exactly one value of $x$ for which the distance from $(5,6)$ to $(3x-1,ax+5)$ is $4$. If $a \neq 0,$ what is $a$?

Guest Sep 11, 2023

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hard sum

Let
\[f(x) = \left\lfloor\frac{2 - 3x}{2x + 8}\right\rfloor.\]
Evaluate $f(1)+f(2) + f(3) + \dots + f(999)+f(1000).$ (This sum has $1000$ terms, one for the result when we input each integer from $1$ to $1000$ into ${}f$.)

Guest Sep 11, 2023

Sep 10, 2023

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Wow! Does anybody else think this new AI interface is awful? Posted answers don't appear for a long time.....Q's may show multiple answers

Wow! Does anybody else think this new AI interface is awful? Posted answers don't appear for a long time.....Q's may show multiple answers (or corrections) ....but you cannot see them until a moderator OK's them.....or SOMETIMES AI read more ..

off-topic

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Guest Sep 10, 2023

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help circles

In the diagram, $O$ is the center of a circle with radii $OP=OQ=5$. What is the perimeter of the shaded region?

Guest Sep 10, 2023

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need answer

105p^6 divided by 21p^5

Guest Sep 10, 2023

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floor

Find all values of $t$ such that $\lfloor t\rfloor = 3t + 4/5$. If you find more than one value, then list the values you find in increasing order, separated by commas.

Guest Sep 10, 2023

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inequalities

(1) Let a_1, a_2, a_3 be real numbers such that
|a_1 - a_2| + 2 |a_2 - a_3| + 3 |a_3 - a_1| = 1.
What is the largest possible value of |a_1 - a_2|?
(2) Let a_1, a_2, a_3, \dots, a_{10} be real numbers such that read more ..

Guest Sep 10, 2023

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simplify

simplify ((mn^3)^2)*(((2^-2)(m^-1)(n^3))^-2)

Guest Sep 10, 2023

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+113

Average

Find the average of all the integer values of $M$ such that $\frac{M}{56}$ is strictly between $\frac{1}{5}$ and $\frac{5}{4}$.

bingboy Sep 10, 2023

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+16

Need help. Don't understand

Daniel filled 7/12 of a tank with 8 pails of water. Another 4 pails and 3 jugs are needed to fill the tank completely. How many jugs of water can the tank hold?

jakeviamcknight24 Sep 10, 2023

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