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Post New Question
All Questions
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234787 Questions
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479
2
help
A train travels at a constant speed of 120 meters per second. The front of the train has just reached the entrance of a tunnel. Two seconds later, all of the train is inside the tunnel, and 3 seconds after that, the back of the train exits the tunnel. What
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Guest
Apr 1, 2020
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878
1
Assume that lines m and n are parallel, and solve for the value of x
2x-5. m x+22. n
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Guest
Apr 1, 2020
0
329
0
Assume that lines m and n are parallel, and solve for the value of x
2x-5 m
x+22 n
Guest
Apr 1, 2020
0
604
1
+98
Trig Identities
Angle α lies in quadrant II , and tanα=−12/5 . Angle β lies in quadrant IV , and cosβ=3/5 . What is the exact value of cos(α−β) ?
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ocmaz
Apr 1, 2020
0
538
1
Determine the value of W
3w+45
7w+5
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Guest
Apr 1, 2020
0
1365
1
+1995
check my answer?
can someone check my answer
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jjennylove
Apr 1, 2020
0
544
2
Help.
Can someone please find the sum of
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Guest
Apr 1, 2020
0
1030
8
+1995
The angular velocity of a fan blade is 6.2 radians per second.
The angular velocity of a fan blade is 6.2 radians per second.
Approximately how many revolutions does the fan blade make in 1.6 minutes?
Enter your answer, rounded to the nearest tenth of a revolution,
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jjennylove
Apr 1, 2020
0
1
2370
1
help
In the xy-plane, the graph y=3x^2-14x intersects the graph of x=y at the points (0,0) and (a,a). What is the value of a?
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Guest
Apr 1, 2020
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648
1
plssss haalp
A floor 9 feet by 12 feet, is to be tiled with 4-inch-by-6-inch tiles. How many tiles are needed to cover the floor?
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Guest
Apr 1, 2020
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358
1
Algebra
What two numbers add to 8 and multiply to -20
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Guest
Apr 1, 2020
0
530
3
rectangle
The width of a rectangle is 8 inches and the perimeter is 26 inches. What is the length of the rectangle?
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Guest
Apr 1, 2020
-2
2505
10
I'm stumped part 2
Let APQRS be a pyramid, where the base PQRS is a square of side length 20. The total surface area of the pyramid (including the base) is 1200. Let W, X, Y, and Z be the midpoints of AP, AQ, AR, and AS, respectively. Find the
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Guest
Apr 1, 2020
0
711
1
coordinates
What is an equation of the line that passes through the point (-2,-4) and is parallel to the line 5x-2y=6?
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Guest
Apr 1, 2020
0
853
3
homework help fast
A laser beam with an output of 6 milliwatts is directed into a series of mirrors. The laser beam loses 5% of its power every time it reflects off of a mirror. The power p(n) is a function of the number n of reflections.
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Guest
Apr 1, 2020
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857
1
help
Elsa's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Elsa $5.70 per pound, and type B coffee costs $4.30 per pound. This month's blend used twice as many pounds of type B coffee as type A, for a total cost of $300.30.
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Guest
Apr 1, 2020
0
3
2304
1
help!
You work in a pharmacy that mixes different concentrations of saline solutions for its customers. the pharmacy has a supply of two concentrations, 0.50% and 2%. the function y=100(0.02)+x(0.005)/100+x gives the amount x in milliliters of the 0.5% solution
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Guest
Apr 1, 2020
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492
1
Ken needs to add about 263 cm3 of water to his plaster mixture. How many paper cups of water will he need to use?
Ken needs to add about 263 cm3 of water to his plaster mixture. How many paper cups of water will he need to use?
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Guest
Apr 1, 2020
0
1649
1
+154
Help plzz
A wheel completes 3.6 revolutions in 6 seconds. What is the angular velocity of the wheel in radians per minute? Enter your answer, in exact form as a simplified fraction!!!
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whatisthis1010
Apr 1, 2020
+1
583
4
+154
Help Plzz
help Plz
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whatisthis1010
Apr 1, 2020
+21
883
3
+2095
HAPPY APRIL FOOLS DAY!!!!
Post all of your pranks here :)
off-topic
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CalTheGreat
Apr 1, 2020
+1
774
1
+154
Help Plz
A hamster runs in its wheel whose radius is 3 inches. The wheel completes 7.3 revolutions in 6 seconds. What is the linear velocity of the hamster's wheel? approximately 15.9 inches per second approximately 22.9 inches per second approximately 43.8 inches
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off-topic
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whatisthis1010
Apr 1, 2020
+1
626
0
+154
Two wheel gears are connected by a chain. The larger gear has a radius of 5
Two wheel gears are connected by a chain. The larger gear has a radius of 5 centimeters and the smaller gear has a radius of 3 centimeters. The smaller gear completes 36 revolutions in 20 seconds.
What is the linear velocity of each of the gears
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whatisthis1010
Apr 1, 2020
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