07/03/20

In the video, the water level was 15 milliliters before adding the chain, and 20 milliliters after adding the chain. When I weighed the chain, its mass was 72.5 grams.
I believe the chain is solid metal (not gold plated), but is probably a blend of gold and other metals. I looked up that gold has a density of 19.3 g/ml, while the other metals like silver and... more
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07/03/20

Equation that passes through the point (5,1) and is perpendicular to the line x-3y+16=0
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07/02/20

Geometry check my answers please :)
Would this be correct??A pentagon’s radius (measure from center to vertex) measures 4 cm, what is the pentagon’s area? 360 / 5 = 72sa = 54 2.5 times tan ( 54 ) h = 3.4 1/2 b ( 7.3 ) = 15b = 4.13.4... more
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07/01/20

More about Pythagorean Triangles
Draw a circle and an arbitrary diameter, creating the base of a triangle. Pick a third point on the circumference to complete the triangle. What is the angle at that third point, and why?
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06/16/20

Linear equations

Which points have the linear equation 3y + 3x= 9
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06/16/20

F(x)= x-8/x+4 g(x)=x/x+4 find f/g then, give it’s domain using an interval
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06/16/20

if F(x) is an even function and the point (-5,3) lies on the graph of F(x), identify an additional point on the graph.
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06/16/20

The lengths of two sides of a triangle are 6 and 3. The length of the third side may be
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06/11/20

system of equation and matrice

In order to choose the most appropriate musical to perform next, you visit the box office after the opening weekend. The theater you work for has a total of 500 seats and sells three different... more
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06/11/20

Solve the following system
 x+y+2z=-23x-y+14z=6x+3y=-5Please include steps and answer
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06/11/20

Solve the following system

x+y+2z=-23x-y+14z=6x+3y=-5Please include steps and answerplease also try to explain how to draw the system
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06/11/20

to identify the trig identity working from left to right: so you have to work out the left hand side first to see if the left hand side is equal to the right hand side

6 tan (x) / cos(x) = 3/ 1- sin(x) - 3/1+sin(x)
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06/09/20

Using this relationship, the sine of 62 is equivalent to the cosine of ?
Recall that the sine and cosine functions are complements of each other. This means that the sine A= Cos B, when A+B= ?
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06/09/20

Is there an example of functions f and g with f’(x) = g’(x), ∀x, but f(x) ≠ g(x)?
Also, why would this example be sufficient?
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06/05/20

Lani had a box that contained: 1 blue marble, 1 green marble, 1 purple marble, 1 yellow marble, and 2 red marbles.
Lani removed one marble without looking, and she recorded the result. She placed the marble back in the box and repeated the procedure one more time. What is the probability that Lani removed a red... more
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06/05/20

please do this!....i only have 5mins
Below is the graph of some function . Identify all of the absolute extrema of the function. Select one:A. Absolute maximum =  and absolute minimum = B. Absolute maximum =  and absolute minimum... more
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06/05/20

Geometry Homework

In a class of 39 students, 15 own a iPhone, 10 own a iPad and 2 own both. What is the probability that a student chosen at random owns either an iPhone or an iPad? A. 12/15B. 27/30C. 5/6D. 23/30
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06/04/20

Geometry Homework

Given Event A, Event B and Event C. Event A and Event B are mutually exclusive. Event A and Event C are not mutually exclusive. P(A)= 0.45P(B)= 0.35P(C)= 0.25What is the probability of the... more
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06/01/20

Tan Half Angle Formula Question
tan(x/2) = (1-cosx)/sinx tan2x = 2tanx/(1-tan^2x)tanx = 2tan(x/2)/(1-tan^2x/2)tanx * tan^2x/2 + 2tanx/2 - tanx = 0Using quadratic formulatanx/2 = [-1 +- radical(1+tan^2x)]/tanx= (-1 += secx)/tanx=... more
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05/26/20

Hard Maths question

A piece of wood of length 10 cm is to be divided into 3 pieces so that the length of each piece is a whole number of cm, for example 2 cm, 3 cm and 5 cm a) List all the different sets of lengths... more
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05/20/20

polynomial division
Perform polynomial division (3x ^ 3-4x ^ 2-14x + 11): (x ^ 2-3x + 2)
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09/16/19

In △ABC, m∠ABC=40°, BL (L∈ AC ) is the angle bisector of ∠B. Point M∈ AB so that LM ⊥ AB and N∈ BC so that LN ⊥ BC . a Find the angles of △MNL.
In △ABC, m∠ABC=40°, BL (L∈AC ) is the angle bisector of ∠B. Point M∈AB  so that LM ⊥AB  and N∈BC  so that LN ⊥BC .Find the angles of △MNL.
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07/23/19

dont know how to set up

soybean mean is 14% protein; cornmeal is 7% protein. how many pounds of each should be mixed together in order to get 280-lb mixture that is 11% protein?
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07/23/19

What is the estimated production level?

A manufacturer estimates that its production can be modeled by f(x, y) = 100x0.75y0.25. Estimate the production level when x = 1900 and y = 1000. (Round your answer to the nearest whole number.) 
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07/22/19

How do I answer this
When Sofie looked at her cell phone bill for the month, she saw that she had spent 1/2 of her minutes talking to her mother and 2/5 of her minutes talking to her best friend. What fraction of the... more
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