11/04/19

Factorise y^2 + y - 20
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11/04/19

Math theory I created.
I have a theory i created called zero theory it proves how you can divide by zero I understand people will not believe me but I am wanting to get in contact with a mathematician to help prove my... more
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11/04/19

how do i set this up?
A meter stick is balanced at the 25 cm mark when a 265 g mass is placed at the 0-cm mark. What is the mass of the meter stick in grams?
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11/04/19

A radioactive isotope has a half-life of 20 days, and decays continuously.
a. Express the amount of an initial 100-gram sample that will remain radioactive, 𝐴(𝑡), as a function of the number of days, 𝑡.b.Based on our knowledge of the half-life, we would expect that after... more
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11/04/19

write the quadratic equation whose roots is 3 &4 , and whose leading coefficient is 3
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11/04/19

How old are these bones?
The radioactive element​ carbon-14 has a​ half-life of 5750 years. A scientist determined that the bones from a mastodon had lost 73.9​% of their​ carbon-14. How old were the bones at the time they... more
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11/04/19

two numbers are in the ratio of 18:47. if the smaller number is 126, the large number
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11/04/19

Find a Polynomial
Find a polynomial of degree 5 with zeros 3, 2, -5, and -i. [You may leave in factored form as linear and irreducible quadratic factors]
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11/04/19

Magnitude of the force exerted on electron
An electron travels with velocity 632,088 m / s at an angle of 0.93 rad to a magnetic field of 0.63 T. What is the magnitude of the force exerted on the electron?
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11/04/19

How do you write this equation??
I’m trying to write this math equation for homework.how do the write the equation of the line in slope intercept form that passes through the point (-1,2) and is parallel to the line y=4x-3 ??
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11/03/19

Find a number such as the sum of the number and 1/2 of the number is 19
Find a number such as the sum of the number and 1/2 of the number is 19
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11/03/19

what do 9 and 11 have in common
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11/03/19

The resistance, R, of a wire varies directly as its length and inversely as the square of its diameter.

If the resistance of a wire 1200ft long with a diameter of 0.28 inches is 16279 ohms, what is the resistance of 2600ft of the same type of wire with a diameter of 0.18 inches? (Leave k in fraction... more
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11/03/19

How long does it take for sunlight to reach Venus?
I’m working on a science project for school and we had to choose one planet to focus on. I chose Venus. My project requires me to answer certain questions about my planet, and one of them is “How... more
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11/03/19

If y is directly proportional to x^2 and y=209 when x=17, find y if x=14.
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11/03/19

What is 5 to the power of -7 as a product

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11/03/19

unit equivalent
Using the equation ε = −L ΔI / Δt, it can be shown that a Henry is equivalent to aa. VA/sb. Vs^2/C.c. VC/sd. V/A
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11/03/19

A force pushes the cart for 1 s, starting from rest. To achieve the same final speed with a force half as big, the force would need to push for how long? A) 1/4 s B) 1/2 s C) 1 s D) 2 s E) 4 s
I need help with this asap, if possible. I have solved this problem and I think it is 1/4 s.I would appreciate knowing if I am correct or not.Thanks in advance!
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11/03/19

magnetic field direction
A long, straight wire carrying a steady current from left to right across the center of this page would produce at the top of the page a magnetic field pointinga. up (away from the page).b. down... more
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11/03/19

Complex numbers problem
Hi, what is the best way to rationalize the denominator and simplify the following: 2-3i/4+3iThanks!
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11/03/19

I need to solve this ASA, but I have no idea how!! Given the equation 2ax - 10 = (a-2)x + 5a, where a is not equal to -2. When this equation is solved for x, the value of x equals what?
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11/03/19

I’m so stumped on this problem: “If there is only one solution to the equation 0= -x^2 + bx - 8 what are the possible values of b?
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11/03/19

The first night in a hotel costs 60 dollars. All additional nights cost 55 dollars. How many nights did we stay at this hotel if the total bill was 390 dollars?
The first night in a hotel costs 60 dollars. All additional nights cost 55 dollars. How many nights did we stay at this hotel if the total bill was 390 dollars?
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11/03/19

Find a polynomial function
Find a polynomial function f(x) of degree 3 with real coefficients that satisfies the following conditions. Zero of 0 and Zero of 1 have multiplicity 2; f(2)=10
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11/03/19

A radioactive substance has a half- life of 15 years. What fraction of a sample of the substance would be left after 45 years?
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