All Questions

514

word problem

The entrance fee at Purple Dinosaur Carnival was 4 dollars each and each ride cost 80 cents.

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Guest Feb 21, 2021

495

+502

Quadratic Formula/Discriminant

Find the product of all positive integer values of $c$ such that $8x^2+15x+c=0$ has two real roots.

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ellapow Feb 21, 2021

592

probability

A set of 25 two digit numbers are listed below 10,17,20,23,24,28,32,39,42,25,26,52,55,58,61,65,66,72,75,78,79,85,94,97,98.
What is the probability of the sum of the number's digits is odd?

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Guest Feb 21, 2021

440

+502

Complex Number Arithmetic

Simplify $-3(1+4i)+i(-2-i)$.

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ellapow Feb 21, 2021

554

+148

Rationalizing Denominators

Simplify the following expression to a simplified fraction:
$$\sqrt{\dfrac{\dfrac{5}{\sqrt{80}}+\dfrac{\sqrt{845}}{9}+\sqrt{45}}{\sqrt5}}.$$

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powclaire Feb 21, 2021

406

geometric sequence

If c(1) = 3/16 and c(n) = c(n - 1)*4, then what is the third term in the sequence?

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Guest Feb 21, 2021

352

+206

Advanced Systems of Equations

Jerry is presently twice as old as his brother and six years older than his sister. How many years from now will Jerry's age be $\frac{2}{3}$ of the combined ages of his brother and sister at that time?

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oliviapow06 Feb 21, 2021

395

Please help me. I don't know how to do this.

Evaluate the sum

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Guest Feb 21, 2021

Feb 20, 2021

302

os cálculos de potencias

pode ser a resolução passo a passo?

Guest Feb 20, 2021

468

ratio

At a math convention, nine out of eleven people are bored by cable news. If there are 126 people at the convention who are not bored by cable news, then how many people at the convention are bored by cable news?

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Guest Feb 20, 2021

547

help with word problem

Rupert weighs 115 pounds and is gaining 3 pounds every month.

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Guest Feb 20, 2021

412

composite shape

What is the area of the composite shape below?

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Guest Feb 20, 2021

994

1/3 to the third power as fraction and simplest form

1/3 to the third power as a fraction and simplest form

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Guest Feb 20, 2021

461

numbers

One number is four less than a second number. Four times the first is 14 more than 5 times the second. Find the numbers.

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Guest Feb 20, 2021

485

+1662

algebra

At a concession stand, five hot dog(s) and two hamburger(s) cost $\$10.25$; two hot dog(s) and five hamburger(s) cost $\$12.50$. Find the cost of one hot dog and the cost of one hamburger.

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wiseowl Feb 20, 2021

470

algebra

Primo car rental agency charges 30 dollars per day plus 0.25 dollars per mile. Ultimo car rental agency charges 20 dollars per day plus 0.80 dollars per mile. Find the daily mileage for which the Ultimo charge is three times the Primo charge.
<read more ..

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Guest Feb 20, 2021

380

math problem

While staying in a 15-story hotel, Polya plays the following game. She enters an elevator on the 6th floor. She flips a fair coin five times to determine her next five stops. Each time she flips heads, she goes up one floor. Each time she flips tails, she read more ..

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Guest Feb 20, 2021

681

+308

i would put a title but im too confused

Two circles share a common chord $\overline{PQ}.$ The chord cuts off a $90^\circ$ arc of circle $A$ and a $60^\circ$ arc of circle $B$. If the area of quadrilateral $APBQ$ is $6+6\sqrt 3.$ Find the combined area of the gray regions. read more ..

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notsmart2.0 Feb 20, 2021

527

+1662

ages

Bill is twice as old as his brother Dan. 12 years ago, Bill was eight times as old as Dan was. How old is Bill now?

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wiseowl Feb 20, 2021

628

+308

two circles i guess

The smaller circle in the diagram is internally tangent to the larger circle. The area of the gray region is $100\pi$ square units. The perimeter of the gray region (include both inner and outer boundaries) is $100\pi$ units. What is the distance in units read more ..

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notsmart2.0 Feb 20, 2021

414

two circles again

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Guest Feb 20, 2021

499

two circles

Two circles inside a square are externally tangent to each other and are tangent to certain sides of the square as shown. The perimeter of the square is 2+sqrt(2). What is the sum of the circumferences of the two circles?

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Guest Feb 20, 2021

967

cone

A cone has a surface area of 360*pi in^2 and volume 800*pi in^3. The cone is dilated, and the surface area of the dilated coin is 2,250*pi in^2. What is the dilated cone's volume?

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Guest Feb 20, 2021

705

+308

three squares

Three squares are drawn inside a circle as shown. The area of the circle is $60\pi$ square inches. How many square inches are in the area of one square?
read more ..

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notsmart2.0 Feb 20, 2021

359

trouble with word problem

Amanda and her group of friends spent a total of 35.50 on 7 hot dogs and 6 cheese burgers. Greg and his group of friends spent 30.50 at the same snack bar on 5 hot dogsand 6 cheese burgers. For your answer WRITE THE EQUATIONS and state how much hot dogs read more ..

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Guest Feb 20, 2021

All Questions ⁺⁰237641 Questions

word problem

Quadratic Formula/Discriminant

probability

Complex Number Arithmetic

Rationalizing Denominators

geometric sequence

Advanced Systems of Equations

Please help me. I don't know how to do this.

os cálculos de potencias

ratio

help with word problem

composite shape

1/3 to the third power as fraction and simplest form

numbers

algebra

algebra

math problem

i would put a title but im too confused

ages

two circles i guess

two circles again

two circles

cone

three squares

trouble with word problem

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