All Questions

200

+78

Find all the complex numbers z such that z^4=-4

Find all complex numbers z such that z^4=-4
Note: All solutions should be expressed in the form a + bi, where A and B are real numbers.

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ILikeSushi Aug 18, 2022

226

+85

hmm

How many cubic (i.e., third-degree) polynomials f(x) are there such that f(x) has nonnegative integer coefficients and f(1)=9?

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Doremy Aug 18, 2022

207

what is the actual value of 7.0 x 10^-3?

Doremy ●

Guest Aug 18, 2022

205

HELP!!!

On a "prime date," both the month and the day are prime numbers. For example, Feb.7 or 2/7 is a prime date. How many prime dates occurred in 2007? If you could please provide an explanation as well!

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Guest Aug 18, 2022

172

Help

At a supermarket, 1/2 of the kiwifruits and 1/7 of the strawberries were rotten. The ratio of the total number of strawberries were rotten. The ratio of the total number of strawberries to the number of kiwifruits was 7:3. If there was 245 rotten kiwifruits read more ..

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Guest Aug 18, 2022

Aug 17, 2022

271

math problem

Darragh has a Golden Eagle coin in his collection with a mass of 13.551\,\text{g}13.551g13, point, 551, start text, g, end text. An uncirculated Golden Eagle coin has a mass of 13.714\,\text{g}13.714g13, point, 714, start text, g, end text. read more ..

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Guest Aug 17, 2022

227

HELP! DUE In 1 HOUR!

Suppose

where A, B, and C are real constants. What is A?

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Guest Aug 17, 2022

265

+273

Spheres :(

How many inches are in the circumference of a great circle of a sphere which has surface area of sq in? Express your answer in terms of .

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TheEarlyMathster Aug 17, 2022

170

whats 11 people want 3 thirds of a cupcake

Guest Aug 17, 2022

183

Help! Algebra

Find constants $A$ and $B$ such that

for all x such that and . Give your answer as the ordered pair (A, B).

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Guest Aug 17, 2022

217

number theory

Lizzie came up with a divisibility test for a certain number m /neq 1:
Break a positive integer into two-digit chunks, starting from the ones place. (For example, the number 354764 would break into the two-digit chunks 64-47-35) read more ..

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Guest Aug 17, 2022

226

Counting Problem

We say that a set of integers is sparse if any two distinct elements in the set differ by at least 3. Find the number of sparse subsets of {1, 2, 3, ... , 12}. (Note that the empty set is also sparse.)

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Guest Aug 17, 2022

257

Help!!

Jeri finds a pile of money with at least . If she puts of read more ..

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Guest Aug 17, 2022

196

MATTHEW THE SMART

35% of the people in the police force are females.
If 140 people in the police force are females, find the total number of people in the police force.

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Guest Aug 17, 2022

192

Somone help pls.

https://web2.0calc.com/questions/halp-see-if-you-can-solve-this-fast

Thanks

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Guest Aug 17, 2022

Aug 16, 2022

237

Puzzle supposedly using binary

three prisoners are each given a hat. The hats come in 3 colors (black, white, and red) and it is possible for multiple prisoners to have the same colored hat. Each prisoner can only see the hats of the other two prisoners, and has to guess the color of read more ..

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Guest Aug 16, 2022

208

WorkKeys Please help

As a part-time contractor, you want to test a new cement mixture for a project. You need 2 3434 wheelbarrows of sand to make 8 wheelbarrows of concrete. How much sand will you need to make 248 cubic feet of concrete?
A.85 1414 cubic read more ..

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KFoster7 Aug 16, 2022

206

+19

help pleece

Alli rolls a standard 6-sided die twice. What is the probability of rolling integers that differ by 2 on her first two rolls? Express your answer as a common fraction.

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bobjohnson Aug 16, 2022

315

WorkKeys Advanced ratios, rate & proportions

It takes 830 bricks to construct a wall that measures 14 feet 9 inches long and 6 feet high. The crew you hire can lay 300 bricks/hour. The cost of the labor is $4,000 per eight-hour workday and you can pay for a partial day. You need to build a wall 36' read more ..

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KFoster7 Aug 16, 2022

185

+126

help asap

What is the largest number C such that 2x^2+5x+C=0 has at least one real solution? Express your answer as a common fraction.

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thedudethatneedshelp Aug 16, 2022

186

Help please

A farmer uses 3 gallons of insecticide concentrate to spray each 1/2 acre of his land. How many gallons of insecticide concentrate does he need to spray 14 acres of land?
A. 84 gallons
B. 42 gallons
C. 21 gallons read more ..

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Guest Aug 16, 2022

178

Please help asap thank you!

Find a linear inequality with the following solution set. Each grid line represents one unit. https://latex.artofproblemsolving.com/3/d/f/3df12b2d7a565680875d22ff817ca7a78107c100.png (Give your answer in the form $ax+by+c>0$ or $ax+by+c\geq0$ where $a,$ read more ..

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Guest Aug 16, 2022

232

What is the product of all positive integers n that satisfy the inequalities 3n + 8 < 30 and 2n - 9 > -4?

What is the product of all positive integers n that satisfy the inequalities 3n + 8 < 30 and 2n - 9 > -4?

Hey. Pls solve this CPhil or Melody. I need help. read more ..

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Guest Aug 16, 2022

228

Knuckle Joe has a problem!

Knuckle Joe wants to know how to simplify fractions.
Could you explain how to?

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Guest Aug 16, 2022

All Questions ⁺⁰230440 Questions

Find all the complex numbers z such that z^4=-4

hmm

what is the actual value of 7.0 x 10^-3?

HELP!!!

Help

math problem

HELP! DUE In 1 HOUR!

Spheres :(

whats 11 people want 3 thirds of a cupcake

Help! Algebra

number theory

Counting Problem

Help!!

MATTHEW THE SMART

Somone help pls.

Puzzle supposedly using binary

WorkKeys Please help

help pleece

WorkKeys Advanced ratios, rate & proportions

help asap

Help please

Please help asap thank you!

What is the product of all positive integers n that satisfy the inequalities 3n + 8 < 30 and 2n - 9 > -4?

Knuckle Joe has a problem!

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