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1392

Practice Problems

In a lilac paint mixture, 40% of the mixture is white paint, 20% is blue, and the rest is red. There are 4 cups of blue paint used in a batch of lilac paint. How many cups of white paint are used? How many cups of red paint are used? How many cups of lilac read more ..

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Guest Jan 14, 2020

588

A patient initially takes 200 mg of a drug that dissolves at a rate of 5% each day. Please show all work to solution!

A patient initially takes 200 mg of a drug that dissolves at a rate of 5% each day. How many days will it take for 130 mg of the drug to be remaining (nearest hundredth)?

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Guest Jan 14, 2020

1114

i need help on this

The longest side of a triangle is six more units than the shortest side. the third side is twice the length of the shortest side. of the perimeter of the triangle is 25 units, write and solve an equation to find the lengths of all three sides of the triangle. read more ..

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Guest Jan 14, 2020

554

help!

A mathematician works for $t$ hours per day and solves $p$ problems per hour, where $t$ and $p$ are positive integers and $1

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Guest Jan 14, 2020

562

For the sum -9 + -1 + 7 + 15 + ... + 71: Please show all work!

For the sum -9 + -1 + 7 + 15 + ... + 71:

(a) Rewrite the sum using summation notation (Σ).
read more ..

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Guest Jan 14, 2020

596

Help!

What number can we place in the box to make the quadratic below the square of a binomial? \[ x^2 + \dfrac{5}{3}x + \boxed{\phantom{000}} \]

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Guest Jan 14, 2020

567

need help on this

Laura bought a softball glove at 40% off the original price. This discount saved her $14.40. What was the original price of the glove?

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Guest Jan 14, 2020

628

Plz help! thx!

Find all complex numbers $z$ such that $z^4 = -4.$

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Guest Jan 14, 2020

561

Find the exponential function that contains the points (0,7) and (4,112). Please show work!

Find the exponential function that contains the points (0,7) and (4,112).

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Guest Jan 14, 2020

534

gas and inflation

A gallon of gas costs $3.34. Inflation has steadily increased by 1% per year. How much longer will it be until it costs $6?

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Guest Jan 14, 2020

619

please help

Find the measure of angle j, the smallest angle in a triangle with sides measuring 11,13 and 19. Round the the nearest whole degree

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Guest Jan 14, 2020

479

help

Let R be the set of primitive 42nd roots of unity, and let S be the set of primitive 70th roots of unity. How many elements do R and S have in common?

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Guest Jan 14, 2020

577

help please

I run a coffee club with 4 people, not including myself. Every day, for 365 days, I invite four members in the club to have coffee with me. What is the smallest positive integer n so that I can avoid having the same group of four members over all 365 days? read more ..

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Guest Jan 14, 2020

714

Compute

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Guest Jan 14, 2020

540

can anyone help?

An advertisement for an orange drink claims that the drink contain 10% orange juice. How much pure orange juice would have to be added to the drink to obtain 5 quart a mixture containing 40% orange juice?

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Guest Jan 14, 2020

1227

help

A company makes rugs. Their smallest rug is a 2 ft by 3 ft rectangle. The largest rug is a similair rectangle. If one side of their largestrug is 18 ft, what are the possible dimensions of their rug

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Guest Jan 14, 2020

-1

654

i need help quickly!!!

Marta is standing 4 ft behind a fence 6 ft 6 in. tall. When she looks over the fence, she can just see the top edge of a building. She knows that the building is 32 ft 6 in. behind the fence. Her eyes are 5 ft from the ground. How tall is the building? read more ..

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Guest Jan 14, 2020

555

Multiplying a Binomial by a Trinomial Using the Distributive Property

The product of (4z2 + 7z – 8) and (–z + 3) is –4z3 + xz2 + yz – 24. What is the value of x? What is the value of y?

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Guest Jan 14, 2020

850

interest

Ben bought a car for $35,000 in 2011. The car depreciates at a constant rate of 18% per year. How long will it be until the depreciated cost of the car is worth $12,000?

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Guest Jan 14, 2020

829

help

A soccer league has 180 players. Of those players 40% are boys. How many boys are in the soccer league?

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Guest Jan 14, 2020

717

need help

In one baseball season, Peter hit twice the difference of the number of home runs Alice hit and 6. Altogether, they hit 18 home runs. How many home runs did each player hit that season?

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Guest Jan 14, 2020

573

coordinate geometry

M is the midpoint of AB. Find the coordinates of B given A(3,8) and M(5,4).

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Guest Jan 14, 2020

586

need help with problem

Which scale factor was used when going from the grey rectangle to the yellow rectangle?

ElectricPavlov ●

Guest Jan 14, 2020

All Questions ⁺⁰237722 Questions

Practice Problems

A patient initially takes 200 mg of a drug that dissolves at a rate of 5% each day. Please show all work to solution!

i need help on this

help!

For the sum -9 + -1 + 7 + 15 + ... + 71: Please show all work!

Help!

need help on this

Plz help! thx!

Find the exponential function that contains the points (0,7) and (4,112). Please show work!

gas and inflation

please help

help

help please

Compute

can anyone help?

help

i need help quickly!!!

Multiplying a Binomial by a Trinomial Using the Distributive Property

interest

help

need help

coordinate geometry

need help with problem

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