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SEE THE ANSWER BELOW.

 (x + y)3 = x3 + 3x2y + 3xy2 + y3.
(50 + 3)^3=x^3 + 3*x^2*y +3*x*y^2 + y^3

148,877 =50^3 +9*2,500  + 1,350 + 27

148,877=125,000 +22,500 + 1,350 + 27

The diagram randomly didint show up, well..., R₁ is 3k ohms, R₂ is 10k ohms, R₃ is 5k ohms and the volts are 9V

Uhhhhh...... there is no circuit diagram !

i meant 53^3

\(\sqrt{ {(\frac{249}{49})}^{2}}= \frac{249}{49} \)

=log2(nm) + 3

\(m=\frac{\Delta Y}{\Delta X } \)

\(m=\frac{-6-(-7)}{3-(-3)}\)

\(m=\frac{1}{6}\)

\(\frac{1}{6} =\frac{y-(-7)}{x-(-3)}\)

\(\frac{x+3}{6}-7 = y\)

\(\frac{x-39}{6}= y\)

If I received two grades for my module, 70 and 65, both each out of a possible 100, with the former 80% of the grade and the latter 20%, what percentage is my overall grade?

[70 X 80%] + [65 X 20%] =69% your overall grade.

The sqrt( of a number scared is just that number, for example, sqrt(10)²=10

or sqrt(10-1)²=10-1=9, sooooooooo..., sqrt(249÷49)²=249/49=5 4/49≈5.0816326530612245

is it B? because it crosses y at 0.4 and horizontal line at 3?? please help

sorry i did not mean to post this twice

When their child was born, her parents invested $40,000 in a plan guaranteed to increase by 3% per year. The logarithmic function y=77.9 log x/40,000  can be used to determine the number of years, y, it takes for the investment to be worth x dollars.

After how many years will the investment be worth approximately 100% more than it was originally and how old will their child be when the investment is worth about $400,000?

A.) The investment is worth approximately 100% more after 23 years, and the investment is worth $400,000 when their child is about 78 years old 
B.) The investment is  worth approximately 100% more after 8 years, and the investment is worth $40,000 when their child is about 30 years old

C.) The investment is worth approximately 100% more after 30 years, and the investment is worth $400,000 when their child is aboit 50 years old

ANSWER

It will take 23.45 years for the $40,000 to double to $80,000 @ 3% annual comp. interest

It will take 77.90 years fpr the $40,000 to grow to to $400,000@3%,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

From these calculations that the answer is "A"

Cos^-1 cos(x)     is just   'x'

so   x=pi/3

y=1/6x-1/2-6

y = 1/6x - (1/2+6)

y= 1/6x - 6 1/2

(y=77.9 log( x/40,000)

years= 77.9 log (80000/40000)   results in y=23.45 years     "A"

2224076400

Btw, it's y~mx+b

I have 'RealCalc' downloaded to my phone.....it is very good...check it out.

This was answered a couple of days ago........go back to that answer.

If you have the equation of your line,   when 'x' = 0     determines the 'y' intercept      Set y=0 to find the 'x' intercept.

If your line equation is in the form   y=mx+b   'b' is the 'y' intercept