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All Questions
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157527 Questions
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20
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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
0
11
1
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.
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Guest
Jan 14, 2020
0
13
2
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
0
17
1
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).
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Guest
Jan 14, 2020
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16
2
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
0
8
1
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
0
16
1
Plz help! thx!
Find all complex numbers $z$ such that $z^4 = -4.$
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Guest
Jan 14, 2020
0
12
1
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
0
11
1
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
0
11
1
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
0
12
1
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
0
19
2
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?
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Guest
Jan 14, 2020
+1
14
1
Compute
Compute
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Guest
Jan 14, 2020
0
15
1
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
0
17
4
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
9
1
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?
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Guest
Jan 14, 2020
+1
16
1
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
+1
9
1
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
0
12
2
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
0
12
1
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
0
11
1
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
0
19
1
need help with problem
Which scale factor was used when going from the grey rectangle to the yellow rectangle?
ElectricPavlov
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Guest
Jan 14, 2020
0
15
1
Help
The graph of y^4 - 4x^4 = 2y^2 - 1 is the union of the graphs of two different conic sections. Which two types of conic sections are they? (Write your answer as a list, with "C" for circle, "E" for ellipse, "H" for hyperbola, and "P" for parabola. For example,
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Guest
Jan 14, 2020
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