01/19/23

Find the remaining trigonometric ratios of θ if :
cos θ =− 1 /3 𝑎𝑛𝑑 𝜃 𝑡𝑒𝑟𝑚𝑖𝑛𝑎𝑡𝑒𝑠 𝑖𝑛 𝑄𝐼𝐼𝐼
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01/19/23

Find the volume of the solid described by integrating its cross-sectional area.

2. A regular tetrahedron with side length "a". I.e. a pyramid with a triangular base whose faces are all equilateral triangles with side length "a".
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01/18/23

7800 dollars is placed in an account with an annual interest rate of 6.5%. How much will be in the account after 29 years, to the nearest cent?
delta math 11 grade
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01/18/23

AN INTERESTNG ALGEBRA QUESTION
A certain exam has 30 questions. A student gets one point for each question she gets right and looses half a point for a question she answers incorrectly; she neither gains nor loses a point for... more
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01/18/23

Where a proton would experience zero net force
Consider two charges, where one (+3.80 nC) is at the origin and the other (-14.4 nC) is at the position x = 4.51 cm.Find the x-coordinate where a proton would experience zero net force.I am... more
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01/18/23

A manufacturer’s marginal-cost function is 𝑑𝑐/𝑑𝑞 = 0.2𝑞 + 8. If 𝑐 is in dollars, determine the cost involved to increase production from 65 to 75 units.
A manufacturer’s marginal-cost function is 𝑑𝑐/𝑑𝑞 = 0.2𝑞 + 8. If 𝑐 is in dollars, determine the cost involved to increase production from 65 to 75 units.
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01/17/23

What mass of phosphorus must react with 32.5 g of oxygen?

2P + 5O2 --> 2P2O5
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01/16/23

An alpha particle mass(4u) experience head on collision elastically with nucleus mass(197u) what is the percentage of its original kinetic eneegy
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01/16/23

find the area the region lying to the right of x= y^2 + 7y + 5 and to the left of x= 3y+2
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01/15/23

I need help with this question of probability

Male Female TotalAge 19 & under 4746 4517 9263Age 20 1625 1553 3178Age 21 1679 1627 3306Total--------------8050----7697-----15747Find... more
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01/15/23

Pt 2 - How do I calculate the partial pressure?

Calculate the partial pressure (in atm) of CH3OH at equilibrium when 52.3g of Co and 2.67 atm of CO2 react at 1000K according to:Co (s) + CO2 (g) ⇔ CoO (s) + CO (g)kp= 7.04 x 10-2
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01/15/23

A sample of vegetable oil with density 901 kg/m3 is found to have a mass of 34.1 g. Find the volume of this sample.
I need anwer
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01/13/23

Probability of at least once over five chances at variable odds each time
If you had five chances to succeed in a game of chance, and you only needed one success to win, what would be your odds of winning that game of chance given that each try had the following... more
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01/13/23

Why do the orbitals at different energy levels overlap while electrons cannot jump between energy levels without absorbing or releasing energy?

Also, looking at their orbitals, how can electrons in 2p shell be as close to the nucleus as 2s or 1s electrons for "90% of their time"? Because how can we get different energy levels like this,... more
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01/13/23

math question please help
An ordinary (fair) die is a cube with the numbers 1 through 6 on the sides (represented by painted spots). Imagine that such a die is rolled twice in succession and that the face values of the two... more
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01/13/23

Calculating activation energy using logs
Given that the rate constant is 11 M-1s-1 at 345 K and the pre-exponential factor is 20 M-1s-1, calculate the activation energy.
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01/13/23

interval and interval notation
Write the set of points from −7 to −1 but excluding −5 and −1 as a union of intervals
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01/13/23

Help Answer. For Part B 1. I put -1.88, -1.881, -1.885 as answers and they're still incorrect, how come?
The age of all farmers are normally distributed with a mean 51 years old and standard deviaiton 11 years old.Part AFind X such as 98% of all farmers are younger X years old.(1) Use the Normal table... more
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01/12/23

Surface Area r(A) of a cylinder
Part a: Assume that the height of your cylinder is 4 inches. Consider A as a function of r, so we can write that as A(r)=2πr2+8πr. What is the domain of A(r)? In other words, for which values... more
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01/12/23

standard form of a parabola

Find the standard form of the parabola whose focus is (3,2) and directrix is x=-1a x=1/12(y-1)^2+2b x= 1/12 (y-2)^2+1c x= 1/8 (y-2)^2 +1d x=1/8(y-1)^2+2
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01/12/23

Find the exact value for cos 7𝜋/ 12 applying sum and difference formulas involving 𝜋 /3 and 𝜋/ 4 .
shouldn't the answer be -0.2588/-0.259. If that's not the correct answer what is?
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01/11/23

Can you show me the steps of how to solve these chemistry stoichiometry problems?
H2SO4 + 2 NaOH --> Na2SO4 + 2 H2OHow much Na2SO4 could be made if 5 grams of H2SO4 and 5 grams of NaOH react?When 40.1 grams of NaOH and 28.4 grams of H2SO4 react, how much H2O is produced?
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01/11/23

Element X on Planet Qatar
Element X on Planet Qatar has three known isotopes: X-121 with a relative abundance of 43.2%, X-123 with a relative abundance of 53.1%, and X-129 with a relative abundance of 3.70%. What is the... more
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01/11/23

A person lifts a 8.2 kg box of bricks a vertical distance of 1.30 m and then carries the box horizontally a distance of 11.00 m.
(a) How much work is done by the person in the process?(b) How much work is done by gravity in the process?
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01/11/23

you indicated that you would use a $2000 down payment for the initial purchase of the car and then make monthly payments of $514.99 until the loan is paid off.
Write a linear equation below that represents the total you have paid to purchase the car (y) as you continue to make payments over time (x), in years.
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