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All Questions
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157875 Questions
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32
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+103
help
In trianlge ABC, AB = 3, AC = 5, and BC = 7. Find the inradius of triangle ABC.
bigmac
Dec 8, 2019
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30
0
help
In triangle ABC, D is the point on BC for which AD bisects median BE. Find BD:DC.
Guest
Dec 8, 2019
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29
0
help
In acute triangle ABC, AC = 14 and the length of the alttiude from B is 12. A square has two of its vertices on AC, and its other two vertices on AB and BC, respectively. Find the side length of this square.
Guest
Dec 8, 2019
0
38
0
help
If tan(pi/4 + x) = A sec 2x + B tan 2x is an identity for all real values of x for which both sides of the equation are defined, find (A,B).
Guest
Dec 8, 2019
0
67
1
In triangle $DEF$, we have $DE = DF = 13$ and $EF = 10$. Let $M$ be the midpoint of $\overline{DE}$ and $N$ be on $\overline{EF}$ such that
In triangle $DEF$, we have $DE = DF = 13$ and $EF = 10$. Let $M$ be the midpoint of $\overline{DE}$ and $N$ be on $\overline{EF}$ such that $\overline{DN}$ is an altitude of triangle $DEF$. If $\overline{DN}$ and $\overline{FM}$ intersect at $X$, then what
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Guest
Dec 8, 2019
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25
0
help
The parabola that is the graph of the equation y = ax^2 + bx + c passes through (-1,-11), (1,1), and (2,4). Find the coordinates of the vertex of this parabola.
Guest
Dec 8, 2019
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38
1
help
In the sequence 6, x, y, 16, the first three terms form an arithmetic sequence, and the last three terms form a geometric sequence. Find x and y.
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Guest
Dec 8, 2019
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31
0
help
In triangle ABC, AB = 5, BC = 6, and AC = 7. Point P on AB, Q on BC, and R on AC are located so that AP = 2, BQ = 2, and CR = 3. Find the ratio of the area of triangle PQR, so the area of trianlge ABC.
Guest
Dec 8, 2019
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64
2
+638
plot algebra
Im not sure about this one
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cerenetie
Dec 8, 2019
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40
0
+638
data plot help
I did the plot diagram but i still couldnt figure out what the answer could be? My best guess was 8.38 but I could be wrong.
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cerenetie
Dec 8, 2019
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46
2
I need help PLS
What is 6x + 7 = 11x -13 in Algebra?
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Guest
Dec 8, 2019
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33
0
help
Find all ordered triples of real numbers (x,y,z) that satisfy
yz + zx = 13,
xz + xy = 25,
zxy + yz = 20.
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Guest
Dec 8, 2019
0
47
1
help
If sin x + cos x = -1/5, and 3/4*pi <= x <= pi, then find cos 2x.
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Guest
Dec 8, 2019
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34
1
help
Find all real values of x that satisfy (16x^2 - 9)^3 + (9x^2 - 16)^3 = (25x^2 - 25)^3.
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Guest
Dec 8, 2019
0
34
1
Mod math help
What is the remainder when the sum of this sequence is divided by 170? Thank you.
1 + 2^3 + 3^2 + 4^5 + 5^4 + 6^7 + 7^6 +.....+ 99^100 + 100^99
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Guest
Dec 8, 2019
0
32
0
help
A rectangular sheet of paper, ABCD, is folded and creased so that AD lies long DC. The crease formed determined a point E on AB, and it is found that E is the trisection point of AB nearer B. Find EC:BC.
Guest
Dec 8, 2019
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37
1
help
The squares of three positive integers are in arithmetic progression, and the third integer is 12 more than the first. Find the three integers.
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Guest
Dec 8, 2019
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34
0
help
The altitude and the median from vertex A of triangle ABC are 4 and 5 units long, respectively. The anlge determined by AB and the median is bisected by the altitude. Find AC.
Guest
Dec 8, 2019
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52
2
Help
Let ABC be a triangle with centroid G. Points L, M, and N are the midpoints of sides BC, CA, and AB respectively. Let D be the foot of the altitude from A to BC and let K be the foot of the altitude from L to MN.
(a) Show that
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Guest
Dec 8, 2019
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41
2
Help
Points M, N, and P are the midpoints of sides TU, US, and ST of triangle STU, respectively, and UZ is an altitude of the triangle. If and TSU=71, angle STU=39, and , angle TUS=70 then what is angle NZM+ angle NPM in
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Guest
Dec 8, 2019
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51
1
help please
if a mass of 500kg lifted through a height of 2 meters what is the work done
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Guest
Dec 8, 2019
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64
1
Help
A lattice point in the x,y-plane is a point both of whose coordinates are integers (not necessarily positive). How many lattice points lie on the graph of the equation x^2-y^2=47
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Guest
Dec 8, 2019
0
52
1
help
In the rectangular coordinate system, find the area of the region bounded by the graph of |x - 3| + |y - 1| = 2.
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Guest
Dec 8, 2019
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73
1
help
Compute the value of the expression
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Guest
Dec 8, 2019
0
73
1
+103
help
In an arithmetic progression whose nth term is a_n, a_1 = 6, a_2 = 8, and a_3 = 10. A second sequence, whose nth term is b_n, has b_1 = 3, and for n > 1, b_n = b_{n - 1} + a_{n - 1}. Write an equation expressing b_n explicitly in terms of
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bigmac
Dec 8, 2019
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