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All Questions
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232716 Questions
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443
1
Help with algebra
The fourth degree polynomial equation x^4 - 7x^3 + 4x^2 + 7x - 4 = 0 has four real roots, a, b, c, and d. What is the value of the sum 1/(abc) + 1/(abd) + 1/(acd) + 1/(bcd)?
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Guest
Jun 24, 2021
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316
1
geometry
Two 2*8 rectangles overlap, as shown below. Find the area of the overlapping region (which is shaded)
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Guest
Jun 24, 2021
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388
1
inequality problem
I own a large truck, and my neighbor owns four small trucks that are all identical. My truck can carry a load of at least 800 pounds more than each of her trucks, but no more than 1/5 of the total load her four trucks combined can carry. Based on these
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Guest
Jun 24, 2021
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388
1
quadratic function
Most cars get their best gas mileage when traveling at relatively modest speed. The gas mileage M for a certain new car is modeled by the function. π(π ) = β 1/ 28*(π ^2) + (3 + π)π + (31 + π) , where π is the speed in mi/h and M is measured in mi/gal
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Guest
Jun 24, 2021
0
363
1
quadratic function
Most cars get their best gas mileage when traveling at relatively modest speed. The gas mileage M for a certain new car is modeled by the function. π(π ) = β 1/ 28 π ^2 + (3 + π)π + (31 + π) , where π is the speed in mi/h and M is measured in mi/gal
read more ..
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Guest
Jun 24, 2021
0
337
1
quadratic equation
Most cars get their best gas mileage when traveling at relatively modest speed. The gas mileage M for a certain new car is modeled by the function. π(π ) = β 1 28 π 2 + (3 + π)π + (31 + π) , where π is the speed in mi/h and M is measured in mi/gal
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Guest
Jun 24, 2021
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561
2
A culture starts with 10000 bacteria, and the number doubles every 40 minutes.
A culture starts with 10000 bacteria, and the number doubles every 40 minutes.
a. Find a function that models the number of bacteria at time t.
b. Find the number of bacterial after one hour.
c. After how many minutes will there
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Guest
Jun 24, 2021
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441
1
Please help!!
Complex numbers are often used when dealing with alternating current (AC) circuits. In the equation V = IZ, V is voltage, I is current, and Z is a value known as impedance. If V = 1+i and Z=2-i, find I.
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Guest
Jun 24, 2021
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363
1
help plz
Let be a point on the graph of equation, (x-94)^2 + (y-9)^2 = 8^2. What is the shortest possible distance between P and the x-axis?
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Guest
Jun 24, 2021
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394
2
how to solve
Let f(x) = (3x^4+3x^3+3x^2+3)/(x^2+2x-4). Find a polynomial g(x) so that the graph of f(x) + g(x) has a horizontal asymptote of y = 0.
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Guest
Jun 24, 2021
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542
2
geometry
In triangle ABC, points D and E lie on BC and AC, respectively. If AD and BE intersect at T so that AT/DT = 3 and BT/ET = 4, what is CD/BD?
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Guest
Jun 24, 2021
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251
1
Number Theory
Find the sum of the primes between 100 and 200, inclusive, that are 1 or 2 or 3 more than a perfect square.
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Guest
Jun 24, 2021
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366
1
algebra
What is the greatest product obtainable from two integers whose sum is 24?
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Guest
Jun 24, 2021
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177
0
help plz
Let P and Q be constants. The graphs of the lines x - 5y = 7 and 15x + Py = Q are perpendicular and intersect at the point (8,3) Enter the ordered pair (P,Q).
Guest
Jun 24, 2021
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185
0
help with geometry
A right triangle with a perimeter of 60 units has an altitude (to the hypotenuse) of length 10 units. Find the sum of the lengths of the two (non-hypotenuse) legs of this triangle.
Guest
Jun 24, 2021
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191
0
geometry
In the figure below, PQRS is a parallelogram of 24 and area 26. What is the perimeter of rectangle QOST?
Guest
Jun 24, 2021
Jun 23, 2021
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390
1
A repost
3 cards are chosen at random from a standard 52-card deck. What is the probability that they can be arranged into a group of three consecutive cards, all of the same suit? For this problem, an Ace can either come before a 2 or after a King, but not both
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Guest
Jun 23, 2021
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196
0
Polynomials
The polynomial $x^3 + Ax + B$ is divisible by x^2 + x + 1 for some real numbers A and B. Find A + B.
Guest
Jun 23, 2021
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450
2
help pls
For how many positive integers n less than 100 is 5^n + 8^(n + 1) + 13^(n + 2) + 14^(n + 3) a multiple of 6?
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Guest
Jun 23, 2021
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347
1
Help counting
How many 3-letter sequences can be formed if the second letter must be a vowel (A, E, I, O, or U), and the third letter must be different from the second letter?
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Guest
Jun 23, 2021
0
379
1
+25
question ty
Line $\ell_1$ is horizontal and passes through $(-5,8)$. Line $\ell_2$ is vertical and passes through $(4,-1)$. Find the point of intersection of $\ell_1$ and $\ell_2$.
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angelxbobaa
Jun 23, 2021
0
257
1
Circle geometry
Chord YZ of a circle with center O has length 12. The circumference of the circle is 12*pi. Find the length of arc YZ.
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Guest
Jun 23, 2021
0
320
1
Area of a triangle
The length of one side of a triangle is sqrt(3) + 1 cm. The two interior angles on that side are 30 degrees and 60 degrees. What is the area of the triangle?
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Guest
Jun 23, 2021
0
276
1
pls help math question
z^4 = -4
should be in the form as a+bi
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Guest
Jun 23, 2021
0
296
1
Pls halp
3 cards are chosen at random from a standard 52-card deck. What is the probability that they can be arranged into a group of three consecutive cards, all of the same suit? For this problem, an Ace can either come before a 2 or after a King, but not both
read more ..
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Guest
Jun 23, 2021
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