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Post New Question
All Questions
+0
231309 Questions
0
296
1
help with parabolas
Two parabolas are the graphs of the equations y=2x^2-10x-10 and y=x^2-4x-8. Find all points where they intersect. List the points in order of increasing x-coordinate, separated by semicolons.
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Guest
Sep 25, 2021
0
296
1
plz help
The points (1, 7), (13, 16) and (-5, k), where k is an integer, are vertices of a non-degenerate triangle. What is the sum of the values of k for which the area of the triangle is a minimum?
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Guest
Sep 25, 2021
0
248
1
Logarithms
Find the constant k so that $\log_y (x^2) = k \log_y x$ for all positive real numbers x and y with $y \neq 1$.
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Guest
Sep 25, 2021
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360
1
Absolute value
Solve for x and y:
|x|+x+y=14
x+|y|-y=18
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Guest
Sep 25, 2021
0
340
3
Probability
If I choose four cards from a standard 52-card deck,with replacement, what is the probability that I will end up with all four Aces?
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Guest
Sep 25, 2021
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235
1
help please
$$z = \frac{ \left\{ \sqrt{3} \right\}^2 - 2 \left\{ \sqrt{2} \right\}^2 }{ \left\{ \sqrt{3} \right\} - 2 \left\{ \sqrt{2} \right\} }$$, find $\lfloor z \rfloor.$
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Guest
Sep 25, 2021
0
242
2
Precalc
In right triangle ABC with B = 90 , we have sin A = 2 cos A. What is sin A?
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Guest
Sep 25, 2021
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314
1
Coordinates
The equation of the line that passes through the points (-3,5) and (0,-8) can be expressed in the form y = mx + b. What is the value of m + b?
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Guest
Sep 25, 2021
0
325
1
how to get a fraction on the calculator
how to get a fraction on the calculator
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Guest
Sep 25, 2021
0
310
1
Math
\[ab^2 + 3a^3b - 8ab^2 + 4a^3b + 2a^3b\]
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Guest
Sep 25, 2021
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301
1
System
Let x, y, z be real numbers so that
y + z = 13
z + x = 14
x + y = 17
read more ..
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Guest
Sep 25, 2021
0
277
1
I'M very confused
Find the percent error if the estimated value is 63 from the actual value is 75.
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Guest
Sep 25, 2021
0
310
1
Help parabola
if a parabola has its vertex at (3,-5) and one of its x-intercepts at x=8, what is the other x-intercept?
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Guest
Sep 25, 2021
0
190
0
plz help
If a + b = 7 and a^3 + b^3 = -42, what is the value of the sum 1/a + 1/b? Express your answer as a common fraction.
Guest
Sep 25, 2021
0
288
1
Algebra
Peter has 288 coins. 25% of these coins are 1 dollar coins. He wants to increase the number of 1-dollar coins to 64%. How many more 1-dollar coins must he collect?
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Guest
Sep 25, 2021
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234
1
Number Theory
A, B, C, and D are positive digits such that ABCD + BCD + CD + D =2021. Find A + B + C + D
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Guest
Sep 25, 2021
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265
1
help with math
A triangular region is bounded by the two coordinate axes and the line given by the equation 2x + y = 8. What is the area of the region, in square units?
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Guest
Sep 25, 2021
0
358
2
Please help?
There were 5 more members in the Choir than in the Robotics Club. There were 32 girls in the Choir Club and 19 girls in the Robotics Club. The number of boys in the Choir Club was 5/7 the number of boys in the Robotics Club. How many members were there
read more ..
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Guest
Sep 25, 2021
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282
2
Algebra
Let p and q be the two distinct solutions to the equation x^2 - 2x - 8 = 0. What is (p+1)(p+1)?
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Guest
Sep 25, 2021
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338
1
x/x+1+x+1/x
x/x+1+x+1/x
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Guest
Sep 25, 2021
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309
1
Rhombus
A rhombus has diagonals measuring 12 inches and 16 inches. What is the perimeter of the rhombus, in inches?
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Guest
Sep 25, 2021
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339
1
+8
Write the equation in exponential form.
A.
B. 4 2 = 16
read more ..
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taxugiye
Sep 25, 2021
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307
1
Algebra II hw help pls
Evaluate |(1/2)-(3/8)i|
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Guest
Sep 25, 2021
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378
1
help geometry
The edges of the bases of the frustum of a regular square pyramid have length 5 and 9, and the slant height of the frustum is 6. What is the volume of the frustum?
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Guest
Sep 25, 2021
+2
396
1
+47
Logic Question-- Classic weighing puzzle
You have 10 boxes with 1000 coins each, either all real or all fake. Real coins are 16 ounces, fake ones are 17. You have a scale, so you put some number of coins on the scale, and then it tells you the weight of those coins. Your job is to figure out which
read more ..
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HedgieWedgie
Sep 25, 2021
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