06/08/22

A 5cm pencil is placed at a distance of 20cm from a converging mirror with a focal length of 40cm. i) using formulas, calculate the distance to the image. ii) calculate the image height.

iii) find the magnification factor.
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06/08/22

find the common ratio

find the common ratio of an infinite geometric series with the given sum and first term s=18 a1=9
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06/07/22

The area of a circle is 40 if the circle is dilated by a scale factor of 3 how much does the area grow?
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05/31/22

Find the exact value of the trigonometric function given that sin u = − 3 5 and cos v = − 9 41 . (Both u and v are in Quadrant III.) sin(u + v)
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05/31/22

free fall motion
2 engineering students are exploring motion of body along a straight line using calculus-based physics performing a lot of experiments. One of the students, is at the 5th floor of the building,... more
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04/27/22

Given the below
Given:Log6 7≈ 1.1Log6 8 ≈ 1.2Log610 ≈ 1.3Show your work to determine the value of log6(3/50)Show Complete solution, please
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12/14/21

No calculator, leave in exact form. Determine the amplitude, period and phase shift of the function.
Determine the amplitude, period, and phase shift of the function. Then graph one period of the function. Show your steps (basic graph and all transformations). 𝑓(𝑥)=3cos(𝑥−𝜋/4)a.)... more
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06/12/21

A population of rabbits oscillates 32 above

A population of rabbits oscillates 32 above and below average during the year, hitting the lowest value in January (t = 0). The average population starts at 650 rabbits and increases by 190 each... more
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06/12/21

(a) A sphere made of plastic has a density of 1.08 g/cm^3 and a radius of 7.50 cm. It falls through air of density 1.20 kg/m^3 and has a drag coefficient of 0.500. What is its terminal speed (in m/s)?
(b) From what height (in m) would the sphere have to be dropped to reach this speed if it fell without air resistance?
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05/16/21

I NEED HELP !!!! pls
In the design of Mr. Cochran's tiny house, he hopes to be completely off grid. That means he needs to generate enough power to manage electricity without connecting to city power lines. A typical... more
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05/16/21

A ship is sailing due north at 50 km per hour. She launches a jet which assumes a bearing of 50° 12 ́and a speed of 400km/hr. After 2 hour both the ship & the jet turn around & travel toward eachother
What must be the bearing of each?also please do a diagram of the triangleThank you
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05/15/21

Using the polynomial identity (x^2+y^2)=(x^2-y^2)^2+(2xy)^2 , determine the Pythagorean Triple when x=3 and y=5 .
A) 3,4,5B) 256.900.1156C) 5,12,13D) 16,30,34
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05/14/21

Given triangle ABC with angle A=105 degrees, b=16, and c=12, solve for the missing side. Do not solve for the entire triangle.
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05/13/21

Question located down below !!!! Thank you for answering!!!

The distance formula is given by the equation 𝑑=(𝑥2−𝑥1)2+(𝑦2−𝑦1)2‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾√d=(x2−x1)^2+(y2−y1)^2where d is the distance between the two points (x1, y1) and (x2, y2). Kevin graphed the... more
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05/12/21

Find the 4th term of the sequence below.

a1=3, an=−4an-1
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05/12/21

find the exact value of sin(-5π/12)
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04/30/21

Let cos a =3/5 with a Quadrant IV, let sin B= -5/13 with B in Quadrant III. find the exact value in the following: a) sin (a+b) b) cos (a-b) c) tan2a d) sin b/2
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04/30/21

Need Help.............
Consider the reaction represented by the unbalanced equation: NH3 + O2 → NO + H2O. For every 4.67 mol of ammonia that reacts, _____ mol of oxygen is required. a. 5.84 b. 18.68 c. None of these... more
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04/30/21

A container holding 4.50 moles of a gas has a volume of 5.00 L at 60° C. How much pressure is exerted within the container? R=0.08206 L atm/ mol K
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04/29/21

How many ions are there in 8.36 moles of Ca+?
I'm asking this question because I need to calculate different ways for moles to particles. I hope that this makes sense. I'm a sophomore in high school so that is the reason why I was asking.
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03/30/21

Write a function g in terms of f so that the statement is true.
The graph of g is a horizontal translation 2 units right of the graph of f. 
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03/29/21

The Pythagorean expectation predicted a winning percentage of .512. Use this value to determine the actual number of runs the Cardinals allowed.
Additional Information about the Problem: In the 2006 regular season, the Louis Cardinals won 83 of 161 games and scored 781 runs (They played only games because the September 17 game against the... more
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03/12/21

Use the properties of the trigonometric functions to find the exact value, without using a calculator
4 cos^(2) 78 degrees + 4 sin ^(2) 78 degrees
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03/08/21

Precalculus question

Find the solution of the exponential equation 100(1.05)^2t   =  500,000 in terms of logarithms, or correct to four decimal places.T=___??
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03/07/21

A guitar string has a mass of 0.3 kg with a length of 0.45 m (the force of tension on the string is 20 N).

What is the speed of the wave on the guitar string?
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