All Questions

620

NEED HELP-counting

Syd chooses two different primes, both of which are greater than 10, and multiplies them. The resulting product is less than 500. How many different products could Syd have ended up with?
I need help with this, I got 36 but it's not right. read more ..

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Guest Dec 15, 2019

854

+262

o_O

my friend asked me if i knew how to do this and i don't so here i am:
how many positive 4-digit integers are divisible by 8?

ElectricPavlov ●●

atlas9 Dec 15, 2019

1333

What is the smallest positive integer $n$ for which $n^2$ is divisible by 18 and $n^3$ is divisible by 640?

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Guest Dec 15, 2019

926

Help (Logarithmic Expressions and Earthquake Magnitudes)

I was doing this question for a homewokr assignment and don't understand how to solve this beacuse the value of S is never given. Please Help.
read more ..

ElectricPavlov ●●●●

Krypticsx Dec 15, 2019

-2

914

+30

/gone

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whoisjoe Dec 15, 2019

588

Help ASAP

Let be defined by . Calculate .

read more ..

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Guest Dec 15, 2019

664

Help please I don’t get this

There are 40 cars in a parking lot, all of which are 2-door or 4-door, and each car is either a compact car or an SUV. There are twice as many compact 4-door cars as compact 2-door cars, and three times as many 2-door SUVs as compact 2-door cars. read more ..

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Guest Dec 15, 2019

511

help

You arrange the digits 1, 2, 3, 4, 5, 6 at random. What is the probability that you get a multiple of 12?

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Guest Dec 15, 2019

616

help

How many ways can you place 5 x's and 4 o's in a 3 by 3 tic-tac-toe grid?

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Guest Dec 15, 2019

881

+537

Trig Help!

Find the minimum value of
For
Thanks!

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MathCuber Dec 15, 2019

-1

869

Eventful Problem

I am playing this game that has an event going on right now, but it requires me to wait until I have at least one energy before I get to do anything, okay? Well, the problem is, that, as of right now, I’m getting one energy every 5 minutes, and the maximum read more ..

off-topic

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BronyGamer Dec 15, 2019

511

Number Theory Help.

Of all 5-digit integers, how many of them are multiples of 2, 3, 4, 5, 6, 7, 8, 9 for each 5-digit integer? Thank you.

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Guest Dec 15, 2019

517

help

Solve the equation (x + 5)^2 = 169.

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Guest Dec 15, 2019

571

help

Three circles and three lines are drawn in the plane. What is the maximum number of points of intersection?

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Guest Dec 15, 2019

685

Help please

There are 15 figure skaters in the Olympic women's competition, including 4 Americans. The gold medal goes to first place, silver to second, and bronze to third. In how many ways can the medals be awarded to three of the 15 figure skaters?
<read more ..

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Guest Dec 15, 2019

936

Time Matter

I am playing this game that has an event going on right now, but it requires me to wait until I have at least one energy before I get to do anything, okay?

Well, the problem is, that, as of right now, I’m getting one energy every read more ..

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BronyGamer Dec 15, 2019

532

help

For the integers from 1 to 1000, how many multiples of 9 are also multiples of 6?

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Guest Dec 15, 2019

525

geometry help

Find x^2.

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Guest Dec 15, 2019

476

help

Solve the inequality 3x + 20 > -4x - 8.

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Guest Dec 15, 2019

802

+296

Help

1. The diagram below shows twelve 30-60-90 triangles placed in a circle so that the hypotenuse of each triangle coincides with the longer leg of the next triangle. The fourth and last triangle in this diagram are shaded. The ratio of the perimeters of these read more ..

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EpicWater Dec 15, 2019

856

Help, don't understand what to do

Find the complex number z that satisfies (1+i)z-2*conjugate of z* = -11+25i

I don't understand how this works, I tried distributing z and got z+zi-2*conjugate of z* = -11+25i, then I subtracted z+zi from both sides read more ..

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Guest Dec 15, 2019

-1

1113

+318

Pre Calc

A bacteria culture starts with 600 bacteria. After 1 hour there are 1000 bacteria. Assuming the size of the culture grows exponentially, ﬁnd the time required for the population size to double. (You may leave ln,log, and (or) e in your answer). read more ..

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mharrigan920 Dec 15, 2019

-1

991

+318

Pre Calc

(5 points) Let f(x) = 1−x^2. Find and simplify the diﬀerence quotient f(a+h)−f(a)/ h .

show work please read more ..

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mharrigan920 Dec 15, 2019

-1

879

+318

Pre Calc

Sketch the graph of the piecewise deﬁned function
f(x) = 1−x if x ≤ 1,
1 if x > 1
read more ..

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mharrigan920 Dec 15, 2019

838

help

Find all values of x that satisfy 6(x + 1/x)^2 - 35(x + 1/x) + 50 = 0.

Alan ●

Guest Dec 15, 2019

All Questions ⁺⁰238363 Questions

NEED HELP-counting

o_O

What is the smallest positive integer $n$ for which $n^2$ is divisible by 18 and $n^3$ is divisible by 640?

Help (Logarithmic Expressions and Earthquake Magnitudes)

/gone

Help ASAP

Help please I don’t get this

help

help

Trig Help!

Eventful Problem

Number Theory Help.

help

help

Help please

Time Matter

help

geometry help

help

Help

Help, don't understand what to do

Pre Calc

Pre Calc

Pre Calc

help

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