12/02/22

Parabolic Cross Section
An engineer designs a satellite dish with a parabolic cross section. The dish is 8 ft. wide at the opening and the depth is 5 ft. *Hint: place the vertex at the origin.What is the equation the... more
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12/02/22

If red hot metal is put on paper in a vacuum, what happens to the paper?
I am asking out of pure curiosity. Without fire, how would the paper burn? Would it just blacken, or stay the same and just be really hot paper. Or would it still somehow turn to ash? It's too... more
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11/30/22

Power Series Help
Looking for a power series representation for tan^-1(4x^2) at a=0. This problem has really stumped me so any help would be appreciated!
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11/30/22

System of equations

Can someone help me with solving this system of equations:ln(y)-y/(2*x)=0(x/y)-x^(1/2)=0
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11/30/22

Complete and balance the following redox reaction in basic solution.
Complete and balance the following redox reaction in a basic solution. Be sure to include the proper phases for all species within the reaction.TeO₃²⁻(aq) + As(s) → Te(s) + H₂AsO₄⁻(aq)
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11/30/22

Chemistry Tutor
I contacted many tutors for chemistry for my daughter, but none of the tutors are available. Some of them said yes and then canceled the session last minute, we are very disappointed .
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11/30/22

direct variations

Using Earth's time of 1 year and mean distance of 93million miles. Find the equation relating T and a. What the question is aaking? 93 milliona=1t?
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11/29/22

At the local bunny-hop, Mr. Meyering jumps 10 inches on his first jump and then 5 inches with his second jump.
At the local bunny-hop, Mr. Meyering jumps 10 inches on his first jump and then 5 inches with his second jump. If the distances form a geometric sequence, what is the total distance Mr. Meyering... more
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11/29/22

Consider the reaction N2(g)+O2(g)↽−−⇀2NO(g) N 2 ( g ) + O 2 ( g ) ↽ − − ⇀ 2 NO ( g ) that has an equilibrium constant, 𝐾c K c , fof 4.10×10−4 4.10 × 10 − 4 at 1700 1700 °C.
What percentage of O2 O 2 will react to form NO if 0.883 0.883 mol N2 N 2 and 0.883 0.883 mol O2 O 2 are added to a 0.605 0.605 L container and allowed to come to equilbrium at ... more
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11/29/22

A manufacturing machine has a 5%defect rate. If 2 items are chosen at random, what is the probability that at least one will have a defect

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11/29/22

I need help with this question. On how to get started.
Based on a sample of 20 men, 40% owned catsBased on a sample of 20 women, 55% owned catsThe test statistic is:  (to 2 decimals)The p-value is:  (to 2 decimals)
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11/26/22

Rational expressions (add and subtract)
Suppose we wanted to add the following rational expressions. Only the denominators are shown.?/x2-4x-5 + ?/x2-3x-4 - ?/x2-9x+20What would the common deonominator be? (The common denominators are... more
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11/25/22

A ball is thrown straight upward and returns to the thrower's hand after 2.1 s in the air. A second ball is thrown at an angle of 41° with the horizontal.

At what speed must the second ball be thrown so that it reaches the same maximum height as the first? The acceleration of gravity is 9.8 m/s². Answer in m/s.
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11/25/22

related to probability
Adarsh Sharma, supervisor of customer relations for Fly High airlines at Delhi Airport, is studying the problem of customer inconvenience due to flight delays. He is concentrating on three... more
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11/25/22

What is the expected profit? ​(Round to the nearest dollar as​ needed.)
A man buys a racehorse for ​$20,000 and enters it in two races. He plans to sell the horse​ afterward, hoping to make a profit. If the horse wins both​ races, its value will jump to $60,000. If it... more
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11/25/22

please help with physics problem
A 530 lines/mm diffraction grating is illuminated by light of wavelength 540 nm. How many bright fringes are seen on a 3.5- m -wide screen located 2.2 m behind the grating?Please help
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11/25/22

What is the pH after.05 M 200ml of NaOH is added to 200mL of .05 M HCN (Ka=4.9x10^-10)
What is the pH after.05 M 200ml of NaOH is added to 200mL of .05 M HCN (Ka=4.9x10^-10)
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11/24/22

What is the mass of methane in grams?
The heater used in a 4.41 m×3.45 m×2.99 m dorm room uses the combustion of natural gas (primarily methane gas) to produce the heat required to increase the temperature of the air in the dorm room.... more
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11/24/22

Physics (Collision) help pls

What are th velocities of snowball and man if the collision is elastic.
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11/24/22

Direct Comparison Test vs. Limit Comparison Test
How do I determine when to use a Direct Comparison Test versus a Limit Comparison Test for an infinite series?
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11/23/22

Use the precipitation interactive to select the solution that reacts with the Ba(NO3)2 solution to form a white solid.
https://gyazo.com/6af5e9c3e5eafc30161a3ba664f5264fK2CO3 is correct.Identify the precipitate that forms and the spectator ions that remain in the solution following this reaction.
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11/23/22

Binoimial probability
The Jones family was one of the first to come to the U.S. They had 6 children. Assuming that the probability of a child being a girl is .5, find the probability that the Jones family had:at least 4... more
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11/22/22

Need helping with math problem!
Billy had a 100% in his Math class. He got a 27/34 on his midterm. The midterm is 25%. of his grade. What should his grade be? Someone answered and told me 27% on another site but I need to know... more
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11/22/22

MacLaurin Polynomial
Let F(x)=∫ x to 0 [sin(3t^2)]dt. Find the MacLaurin polynomial of degree 7 for F(x).Use this polynomial to estimate the value of ∫ 0 to 0.73 [sin(3x^2)]dx.
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11/22/22

A news report stated that the mean distance

Going to work: A news report stated that the mean distance that commuters in the United States travel each way to work is 14 miles. Assume the standard deviation is 8 miles. A sample of 70... more
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