All Questions ⁺⁰237665 Questions

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Base Problems.

A base-10 integer , where represents a single digit. What is the value of

Guest Sep 30, 2020

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3969

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Container A and container B have leaks.

Container A and container B have leaks. Container A has 800 ml of water and is leaking 6 ml per minute. Container B has 1000 ml and is leaking 10 ml per minute. Let m represest the number of minutes the contains are leaking. How many minutes, m, will it read more ..

Guest Sep 30, 2020

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440

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dudududu

The function $f(x)$ is defined by \[f(x) = \left\{ \begin{array}{cl} -x + 1 & \text{if $x \le 0$}, \\ -(x - 1)^2 & \text{if $x \ge 1$}. \end{array} \right.\]Solve $f(x) = f^{-1}(x).$ Enter all the solutions, separated by commas.

Guest Sep 30, 2020

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539

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help with ratios

The lengths of three sides of a triangle are in the ratio 3: 5:6. The perimeter of the triangle is 28 cm. Find the lengths of each side of the triangle.

Guest Sep 30, 2020

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614

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+117

Hard Combinatorial probs!

For how many integers n where 2≤n≤100 is (n2) odd?

DragonXlayer Sep 30, 2020

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388

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help please

Every day Ike leaves his farm at 11:30 a.m. to take a load of potatoes to the chip producers. If he averages 50 km/h he arrives at 1:54 p.m., but if he averages 80 km/h he arrives at 1 p.m. At what speed must he travel to arrive at 12:45 p.m.? read more ..

Guest Sep 30, 2020

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1029

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+6

Finding the Equation of a Function Given The Slope of A Tangent Line

Hi! I made this account two minutes ago because if I tank this miderm I'll die. The gist of it is this: I've got two problems where I'm given the slope of a a line tangent to a function and its location on the x-axis, and from there I'm meant to somehow read more ..

ij7346 Sep 30, 2020

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369

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geometry

Find all missing variables and measures of each angle

Guest Sep 30, 2020

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759

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+36

help me survive this class

A hummingbird has a 85% probability of surviving the 450 mile migration trip to its favorite breeding ground. Compute the mean of the random variable, number of birds that survive migration, if 280 birds were randomly selected.

mhagen26 Sep 30, 2020

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386

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please help

Mr. Trump invests 1000 dollars in a fund that compounds annually at a constant interest rate. After three years, his investment has grown to 1225 dollars. What is the annual interest rate? (Round your answer to the nearest integer.)

Guest Sep 30, 2020

+1

789

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+324

SOOO STUMPED!!!

Hey, I tried EVERYTHING on this problem -- but no such luck. Any help is greatly appreciated:

read more ..

Nacirema Sep 30, 2020

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507

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HELP ME!

Express as a common fraction given:

Guest Sep 30, 2020

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412

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interest

When Lauren was born on January 1, 1990, her grandparents put $5000 in a savings account in her name. The account earned 5.5% annual interest compounded quarterly on March 1, June 1, September 1 and December 1. To the nearest dollar, how much read more ..

Guest Sep 30, 2020

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683

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+36

f(x)= ?

Find a formula for f(x), an exponential function such that f(2)=1/8 and f(-1)=8.

mhagen26 Sep 30, 2020

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536

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+36

prob n stat help

According to the College Institute, 55% of freshman entering a 4-year college in 2007 were female. Compute the standard deviation of the random variable, number of female freshman, if 720 students were randomly selected.

mhagen26 Sep 30, 2020

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428

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A man has 29 coins in his pocket, all of which are dimes (worth $ 0.10 each) and quarters (worth $ 0.25 each)

A man has 29 coins in his pocket, all of which are dimes (worth $ 0.10 each) and quarters (worth $ 0.25 each). If the total value of his change is $ 4.85 , how many dimes and how many quarters does he have?

Guest Sep 30, 2020

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554

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moar functional equations

The function $f(x)$ satisfies \[f(x) - 2 f \left( \frac{1}{x} \right) = 4^x\]for all $x \neq 0.$ Find $f(2).$

Guest Sep 30, 2020

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558

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HELP ME PLS

https://web2.0calc.com/questions/math-q_6

Guest Sep 30, 2020

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1080

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+479

Thanks for help

The positive five-digit integers that use each of the digits 1, 2, 3, 4 and 5 exactly once are ordered from least to greatest. What is the 50th integer in the list?

HelpBot Sep 30, 2020

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347

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please help!

Which is the right polynomial?

Guest Sep 30, 2020

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