Questions Asked on
June 25, 2020

Trigonometry
The angle of elevation from a point on the ground to the top of a pyramid is 23^•(degree)40^’(minutes). The angle of elevation from a point 112 ft farther back to the top of the pyramid is 15^•30’. Find the height of the pyramid.
asked by Vin 
Physics
A piece of copper ball of mass 20g at 200 degree centigrade is placed in a copper calorimeter of mass 60g containing 50g of water at 30 degree centigrade. Ignoring heat losses calculate the final temperature of the mixture
asked by Thomasine 
Chemistry
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asked by Keeley 
Astronomy
A quasar with an observed luminosity of L=1012L⊙ is shining at the Eddington limit, with a net efficiency of 10%. What is the mass accretion rate (in units of M⊙year−1)?
asked by M 
Calculus
Find the point on the curve y = 1/x^2 ,( x > 0 ), where the curvature is maximum.
asked by Anonymous 
calculus
Find the volume of the parallelepiped with the vectors A = 2i + j +3k , B = i 2j + k , C = 3i + 4j+ 2k as coterminal edges.
asked by Anonymous 
geometry
A sector of a circle radius 18 cm and angle 300 degrees is bent to form a cone. Calculate the base radius of the cone
asked by Ngozi Eze 
Physical Science
The relative atomic mass of a sample of chlorine which contains 75.78% chlorine 35 and 24.22% chlorine37 is ____.
asked by Maryann 
science
what do you think will happen to a pulse signal (voltage is applied for a short period of time only) when it is applied to a transmission line? Will the pulse reach the end of the transmission line? What will happen if the end of the transmission line is
asked by Anonymous 
geometry
A right triangle is dilated by a factor of 3.5. Which statements about the resulting triangle must be true? Select all that apply. (There is more than one answer) It is smaller than the original triangle. It is an isosceles triangle. It is larger than the
asked by jessica 
Statistics
X+4y=8
asked by Jessica 
Calculus
Determine whether the function f(x,y) = e^x siny is harmonic.
asked by Anonymous 
math
Hi! I have a question. A cook needs 5 cups of vegetable stock for a soup recipe. How much is this in pints? Write your answer as a whole number or a mixed number in simplest form. Include the correct unit in your answer. and these are the units. fl oz, C,
asked by Emily 
science
What do you mean by mechanical advantage if simple machine is2
asked by Anonymous 
Mathematics
The probability of a seed germinating 113.if three of the seeds are planted what is the probability that none germinate
asked by Bulama 
Calculus
Find all the first and second order partial derivatives of the function f(x,y) = 2x^3+ 3x^2 y^2 + 3x + 2/y + 4
asked by Anonymous 
mathematics
A Square ABCD inscribed in a circle of radius 4cm. What is the minor segment cut off by the chord AB
asked by theay 
mathematics
Which system of equations can be graphed to find the solution(s) to x2 = 2x + 3?
asked by theodore 
Calculus
Find the equation of the line passing through the pointsP1( 1, 2, 1) and P2( 2,3,2).
asked by Anonymous 
math
How much is Zone five dollar bill, seven quarters, and six dimes?
asked by Zoe 
Algebra
hello! I am nine years old, and I have a question. This is my question. Evaluate the expression when c=5 and d=45 d6c=??? I don't know how to do it. Can you help me? Thanks!
asked by Emily 
chemistry
What is solid?
asked by rob 
Spanish
How do you say good morning in spanish?
asked by Lia 
Physics
Your family is moving to a new apartment. While lifting a box 1.5 m straight up to put it on a truck, you exert an upward force 300 N for 1.0 s. How much power is required to do this? Do I work this like this or? P = W/t W= 300N. 1.5m*cos(0)=400J
asked by Maryann 
physics
a spring 20cm long is stretched to 40cm by a load of 50n .what is 1.the length when stretched by 100n 2.what is the work done when stretched by 100n
asked by Ayogu Jessica 
science
A boat start sailing on Monday 10:00 at harbour A and sails 600km due north. Later it turns east for a further 420km to reach harbour B on Tuesday at 12:00..calculate the average velocity of the trip
asked by Heita 
Science
.A uniform metre rule balances horizontally on a knife edge placed at the 58 cm mark when a weight of 20gf is suspended from one end. what is the weight of the rule? *
asked by Lala 
Math
The measure of angle B is 124 degrees. What is the measure of its supplementary angle?
asked by Anonymous 
algebra
y=sqrt(4x^2) I have a trouble finding range, I used the inverse to find worked out to be y=2 but the answer is [0,2] my question is how do I found 0 in [0,2]?
asked by John 
history
Do you think the writers of the Constitution believed one was the branch of government more important?
asked by Anonymous 
Math
I guess I'm not following the below example Reiny answered previously. The reason for my confusion is if a coin has been removed, it stays removed, does it not? So how can you have a 1/16 chance on the second draw? If one coin has been removed, the second
asked by Getit 
Mathematics
A man traveled from point A to point B at a bearing of 60 degress from point A, calculate the bearing of point A from point B
asked by Grace 
physics
three forces of magnitude 6N, 2N and 3N act on a small object in directions north, south and west respectively, find magnitude of the resultant force
asked by ayo 
Probability
A police radar unit is set up to monitor vehicles on a stretch of highway with a speed limit of 100 km/h. Longterm records for this location show that speeds vary normally with a mean of 105 km/h and a standard deviation of 7 km/h. Drivers who exceed the
asked by Brandon 
Chemistry
The pressure of a sample of argon gas was increased from 3.71 atm to 8.55 atm at constant temperature. If the final volume of the argon sample was 16.1 L, what was the initial volume of the argon sample? Assume ideal behavior.
asked by Anonymous 
math
What power is expended by a weightlifter when lifting a 56kg barbell a vertical distance of 1.0 m in a time interval of 1.4 s . Express your answer to two significant figures and include the appropriate units.
asked by Kylee Santiago 
Math
Your original purchase price was $950.00 plus 5% sales tax. You enter into an agreement where the interest (12.5% APR) is waived for the first 12 months provided you make the required monthly payments; otherwise the interest is accrued from the date of
asked by anon 
geometry
Which is not an appropriate classification for a triangle? A)Right Equilateral**** B)Acute Scalene C)Obtuse Isosceles D)Right Scalene
asked by just a gamer