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All Questions
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234777 Questions
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2
1471
2
Digits question
What is the units digit of the sum of the squares of the first 2007 odd, positive integers?
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Guest
Feb 1, 2020
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616
1
Helpppp
a 40 kg child uses a pogo stick to bounce up and down. The spring constant, k, of the toy equals 8,650 N/m. How much energy (In J) is stored in the spring under this circumstance?
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Guest
Feb 1, 2020
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412
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janice at the store she bought 30 pieces of stuff that was 30 cents and 2 dollars and 3 dollars purchase price was $$30 how much 30 cent
stuff did she buy
Guest
Feb 1, 2020
0
436
1
help
Zoey took 2.5 hours to bike the 60 km from her house to the beach. It took her 3.5 hours to bike the same distance back to her house. What was Zoey's average speed?
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Guest
Feb 1, 2020
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996
1
GEometry help
$D$ is on side $\overline {AB}$ of $\triangle ABC.$ We know $\triangle ABC \sim \triangle ACD$ and we know all the marked side lengths.
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Guest
Feb 1, 2020
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1338
2
help
Frank started out in his car travelling 45 mph. When Frank was 1/3 miles away, Daniel started out from the same point at 50 mph to catch up with Frank. How long will it take Daniel to catch up with Frank
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Guest
Feb 1, 2020
+1
528
2
Geometry problem
The corner of a unit cube is chopped off such that the cut runs through the three vertices adjacent to the vertex of the chosen corner. What is the height of the remaining cube when the freshly-cut face is placed on a table?
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Guest
Feb 1, 2020
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405
1
help
A jet aircraft can average 160 miles per hour in calm air. On a trip, the aircraft traveled 600 miles with a tailwind and returned the 600 miles against a headwind of the same speed. If the total round trip took 8 hours, what was the speed of the wind?
read more ..
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Guest
Feb 1, 2020
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554
2
Math in the Future
how can math help me in the future?
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Guest
Feb 1, 2020
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376
0
help
If I merge 5 drum lamps I can get 2 lampions, 5 lampions for 2 trio of lamps, 5 trio of lamps for 2 lotus lamps, 5 lotus lamps for 2 jade turtle lamps, 5 jade turtle lamps for 2 festive carp lamps If i want a festive carp lamp how many drum lamps should
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Guest
Feb 1, 2020
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721
1
need help on this
Sam sees a UFO hovering in the sky. He measures the angle of elevation of the UFO at 30 . He calls Julie, who is 15 miles closer to the UFO and asks her what her angle of elevation to the UFO is. She measures it to be 55 . The alien in the UFO sees the
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Guest
Feb 1, 2020
+1
916
1
+1252
Cauchy-Schwarz Inequality
Hello all!
Can anyone explain to me in-depth about the Cauchy-Schwarz Inequality? I'm stuck on it and don't know how to use it.
All tutorials and websites online use dot vectors and lists and other calculus terms I don't understand, so a
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CoolStuffYT
Feb 1, 2020
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4097
1
+4
pls help
a,b and c are the vertices of a triangle. a has coordinates (4,6). b has coordinates (2,-2). c has coordinates (-2,-4). d is the midpoint of ab. e is the midpoint of ac. prove that
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tillie
Feb 1, 2020
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758
2
help
Cedarburg is 5 miles due north of the airport, and Lanberry is due east of the airport. If the distance between Cedarburg and Lanberry is 10 miles, how far is Lanberry from the airport? If necessary, round to the nearest tenth.
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Guest
Feb 1, 2020
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912
1
please help on this
Amanda made 2 identical necklaces, each having beads and a pendant. The total cost of the beads and pendants for both necklaces was $13.80. If the beads cost a total of $7.40, how much did each pendant cost?
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Guest
Feb 1, 2020
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523
2
help !!!!
If sin x = 2 3 and sec y = 5 3 , where x and y lie between 0 and π/2, evaluate sin(x + y).
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Guest
Feb 1, 2020
-1
1252
3
+41
help
(a) Simplify
(b) In the expansion of (1 + x)n, there exist three consecutive coefficients a,b,c that satisfy a:b:c = 1:7:35. Find the positive integer n.
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Nightmist
Feb 1, 2020
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979
1
help
A ship travels 60 miles due East, then adjusts its course northward. After traveling 80 miles in that direction, the ship is 139 miles from its point of departure. What is the new bearing of the ship?
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Guest
Feb 1, 2020
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389
2
help
We say that a quadrilateral is a bow-tie if two of the sides cross each other. Seven different points are chosen on a circle. We draw all C(7,2) chords that connect two of these points. Four of these 21 chords are selected at random.
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Guest
Feb 1, 2020
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795
2
Question
Miko and Keddy shared 210 stamps in the ratio 2 : 5. How many more stamps did Keddy have?
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Guest
Feb 1, 2020
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421
1
need help!!!
You are playing a game in which you roll 2 dice. If the sum of the two numbers showing is greater than or equal to 10, you win. What is the probability that you win the first three times you play?
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Guest
Feb 1, 2020
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2115
1
Right ABC has its right angle at C, BC=4 , and AC=8 .
Right △ABC has its right angle at C, BC=4 , and AC=8 .
What is the value of the trigonometric ratio?
sin A=
tan B=
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Guest
Feb 1, 2020
0
1197
1
help please
The a weight of an object on the moon is 1/6 of its weight on earth. if a moon rock weighs 20 1/2 lb on earth, how much did it weigh on moon?
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Guest
Feb 1, 2020
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