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Post New Question
All Questions
+0
229725 Questions
0
662
3
help
Two concentric circles with radii 10 cm and 8 cm. What is the maximum number of non-overlapping unit circles that can be inscribed between these two circles?
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Guest
Dec 23, 2019
+1
1308
2
help
Set R is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. If R contains the maximum possible number of rectangles given these
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Guest
Dec 23, 2019
0
335
0
Graph the function on the coordinate plane.
Graph the function on the coordinate plane. f(x)=-x^3+1
Guest
Dec 23, 2019
0
361
0
help
An infinite sequence of real numbers a_1, a_2, a_3, ... has the property that for all n > 1, a_1 + a_2 + ... + a_n = n^2 * a_n and a_1 = 1/2. Find a_1 + a_2 + ... + a_{50}.
Guest
Dec 23, 2019
+1
626
3
+29
another problem lol
A standard die with six sides is rolled 5 times. I get one 1, one 4 and three 3's. How many possible sequences of rolls are there? (For example, 3, 3, 1, 3, 4 is one possible sequence.)
I just did but that's incorrect,
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ineedmathhelplol
Dec 23, 2019
+1
2059
2
help
How many different lines pass through at least two points in this 3-by-3 grid of lattice points shown?
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Guest
Dec 23, 2019
+1
516
4
Need help
1. In poker, a hand with 5 cards has two pairs if it contains two cards of one rank, two cards of a different rank, and a fifth card that does not match either of the first two ranks. (For example, the hand JJ774 has two pairs.) The order of the
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Guest
Dec 23, 2019
+1
639
3
+29
Help pls? tysm
In how many ways can 4 dogs and 4 cats be seated at a circular table if each dog sits directly between two cats? (Two seatings are considered the same if one can be rotated to form the other. All dogs and cats are distinguishable.)
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ineedmathhelplol
Dec 23, 2019
0
1236
1
help
Keisha's basketball team must decide on a new uniform. The seventh-graders will pick the color of the shorts (black or gold) and the eighth-graders will pick the color of the jersey (black, white, or gold), but the two groups of players will not confer
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Guest
Dec 23, 2019
Dec 22, 2019
+1
690
4
Need some help
A standard die with six sides is rolled times. I get one one and three 's. How many possible sequences of rolls are there? (For example, is one possible sequence.)
I
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Guest
Dec 22, 2019
0
326
0
help
The equation 4x^2 + ax + b = 0 is such that one of its roots is the sum, and the other the product, of the roots of 2x^7 + x^6 - 3 = 0. Find the ordered pair (a,b).
Guest
Dec 22, 2019
0
338
0
help
Let P(x) and Q(x) be polynomials with positive integer coefficients such that [Q(x)]^2 = [P(x)]^2 + 2x + 1. Find Q(x).
Guest
Dec 22, 2019
0
1525
1
+24
Due tomorrow, pls help!!
1. Find the product of all positive integer values of $c$ such that $8x^2+15x+c=0$ has two real roots.
2. The equation $x^2+18x=27$ has two solutions. The positive solution has the form $\sqrt{a}-b$ for positive natural
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Elen8
Dec 22, 2019
0
2073
3
+24
PLS Help
1. Points $X$ and $Y$ lie on a circle centered at $O,$ and arc $XY$ is $80^\circ.$ The circle passing through points $O,$ $X,$ and $Y$ is drawn. Find the measure of arc $XOY$ on the smaller circle.
2. Trapezoid $WXYZ$ is inscribed
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Elen8
Dec 22, 2019
0
307
0
help
The lengths of the sides of a triangle are in arithmetic progression. The area of the triangle is 126, and the radius of the incircle is 3. Find the shortest side of the triangle.
Guest
Dec 22, 2019
0
359
1
please help! :(
Let and be real numbers whose absolute values are different and that satisfy
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Guest
Dec 22, 2019
0
568
4
Help...
Eleanor is going to color the sides of a regular octagon. Two sides will be red, two sides will be yellow, two sides will be green, and two sides will be blue. Furthermore, opposite sides of the regular octagon will have the same color. How many different
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Guest
Dec 22, 2019
+1
769
3
Help!
Four mathematicians, three physicists, and an engineer are to be seated equally spaced around a circular table. How many different arrangements are possible if the mathematicians must all sit together (in four consecutive seats) and the physicists must
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Guest
Dec 22, 2019
-1
841
3
+39
find the value x
I need help with these problems:
1.
initial number:5660236326063470
x=58741285
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MathKing
Dec 22, 2019
0
387
2
Remainder Theorem Help
Suppose is a polynomial of degree five for which . Find g(0).
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Guest
Dec 22, 2019
0
372
1
help pls
A customer ordered 15 pieces of gourmet chocolate. The order can be packaged in small boxes that contain 1, 2 or 4 pieces of chocolate. Any box that is used must be full. How many different combinations of boxes can be used for the customer's 15 chocolate
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Guest
Dec 22, 2019
0
352
1
Please help
Part a) Let z and w be complex numbers satisfying |z| = 4 and |w| = 2. What is ?
Part b) Let z and w be complex numbers satisfying |z| = 5, |w| = 2, and What is ?
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Guest
Dec 22, 2019
0
325
0
help
Solve cos(A)^2 + 2*sin(A) = 1, where -180 < A <= 180.
Guest
Dec 22, 2019
0
511
1
help
Urn $A$ contains $2$ white balls, and urn $b$ contains $1$ white ball and $2$ black balls. Two balls are drawn at random from Urn $B$, and without their color being noted, are placed in urn $A$. Then one ball is drawn from urn $A$. What
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Guest
Dec 22, 2019
0
566
2
help
You have 5 red shirts, 5 green shirts, 6 pairs of pants, 8 green hats and 8 red hats, all of which are distinct. How many outfits can you make consisting of one shirt, one pair of pants, and one hat without having the same color of shirts and hats?
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Guest
Dec 22, 2019
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