3 years ago

What's the radius of a circle with an area of 123 square feet ?

Mathematics

1 answer:

zheka24 [161]3 years ago

8 0

Hope this helps, have a great day ahead!

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Your lunch bill at Bob's comes to $21.50. If you and your BFF will give 20% tip and split the bill, how much will you each pay?

velikii [3]

X is the amount of money that each will pay

2x+(21.50*20/100) =21.50
2x+4.3=21.50
2x=17.2
x=8.6$ will pay each person

5 0

3 years ago

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Solve the literal equation for x.<br> g=4x+5xy

Tasya [4]

The literal equation for x is g/4+5y

<h3>Subject of formula</h3>

This is a way of representing a variable in terms of another

Given the equation below;

g=4x+5xy

Factor out x to have

g=x(4 + 5y)

Divide both sides by 4 +5y to have:

g/4+5y = x

x = g/4+5y

Hence the literal equation for x is g/4+5y

Learn more on subject of formula here: brainly.com/question/21140562

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4 0

2 years ago

Sora correctly solved this inequality. Negative 2.1 w greater-than 12.81. w less-than negative 6.1. Which graph matches the ineq

alina1380 [7]

Answer:

Its the third one I think.

Step-by-step explanation:

I worked on it.

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2 years ago

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22: A 2.0 kg object moves along the x-axis under the influence of an unknown force. Its potential energy due to the force is U(x

aleksandr82 [10.1K]

Answer: a) -13.25 N, b) 1.78 m/sec

Step-by-step explanation:

Since we have given that

$U(x)=ax^4+bx^2$

where

$a=2.5\ J/m^4\\\\b=12\ J/m^2$

As we know that

$F=\dfrac{-dU}{dx}=-(4ax^3+2bx)$

Here, x= 0.5 m

So, it becomes,

$F=-(4\times 2.5\times (0.5)^3+2\times 12\times 0.5)=-13.25\ N$

Now, we need to find the velocity when it crosses the origin,

$F=mg\\\\F=m\dfrac{dv}{dt}\\\\F=mv\dfrac{dv}{dx}\\\\-(4ax^3+2bx)dx=mvdv\\\\\int\limits^{0.5}_0 {-(4ax^3+2bx)} \, dx =\int\limits {mv} \, dv\\\\ \dfrac{-4ax^4}{4}+\dfrac{2bx^2}{2}|_0^{0.5}=\dfrac{mv^2}{2}\\\\ax^4+bx^2|_0^{0.5}=\dfrac{mv^2}{2}\\\\2.5(0.5)^4+12(0.5)^2=\dfrac{2v^2}{2}\\\\0.15625+3=v^2\\\\3.15625=v^2\\\\\sqrt{3.15625}=v\\\\v=1.78$

Hence, a) -13.25 N, b) 1.78 m/sec

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4 years ago

Write the following equation. The sum of four times a number, and 3, is equal to three times the number.

svetlana [45]

Answer: 4x+3=3x

Step-by-step explanation:

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3 years ago

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