Drazil

18 Questions
17 Answers

+1

380

0

+115

Where is off topic button

Drazil Jan 26, 2021

0

443

1

+115

Off Topic

Can I post basic physics questions here?
Also how do I mark a post as off topic... I can't seem to find the option

Drazil Jan 24, 2021

0

741

1

+115

Word Problem help.

Several men (x of them) crash-land their airplane on a deserted island in the South Pacific. On their first day they gather as many coconuts as they can find into one big pile. They decide that, since it is getting dark, they will wait until the next day read more ..

Drazil Nov 10, 2019

+3

947

4

+115

Harder Word Problem

A carnival Ferris wheel with a radius 8 m makes one complete revolution every 20
seconds. The bottom of the wheel is 1 m off the ground. The ride lasts 40 seconds and
starts at the bottom of the wheel.

a) Find an equation read more ..

Drazil Jun 9, 2019

0

882

3

+115

Word Problem

Question Number 2, I solved one.
The answer according to the key is: 12.9M read more ..

hectictar ●●●

Drazil Jun 9, 2019

+1

853

4

+115

Exponent law

( 23x · 8x+5 ) / 16x-1 = √2x-1

I keep getting -17/3, but apparently the answer is -9??? :///

Drazil Jun 1, 2019

+1

831

1

+115

Exponential functions

What are the values of k such that there is only one x-intercept;
K2x + 2-x = 3

Drazil May 24, 2019

+1

836

6

+115

Re-sending with clarity

Find the sum of this:
Sn = 1/1x2 + 1/2 x 3 + 1/3 x 4 + 1/n x (n+1)
[when using x in the denominator, i mean to use it as multiplication. 1/1x2 is bascially 1/2 or can be represented as 1/1 x (1+1)] read more ..

Alan ●●●●●●

Drazil Mar 1, 2019

+1

2057

4

+115

Hardest Question On my Grade 10 Math test

Find the sum of this:
Sn = 1/1x2 + 1/2x3 + 1/3x4 + 1/nx(n+1)

I appreciate all help! read more ..

Drazil Mar 1, 2019

+1

734

1

+115

help pls

For f(x)=x^2+x+1. This polynomial has two different roots r1 and r2. Find all the values of x- for which the sequence approaches reach r1; for which the sequence approaches r2; and for which the sequence does not approach any root (the set of exceptional read more ..

Drazil Feb 21, 2019

0

732

0

+115

help for a friend

For f(x)=x^2+x+1. This polynomial has two different roots r1 and r2. Find all the values of x- for which the sequence approaches reach r1; for which the sequence approaches r2; and for which the sequence does not approach any root (the set of exceptional read more ..

Drazil Feb 20, 2019

0

871

2

+115

Functions help

f(x) = √x
Graph the following:
y = -3f(x+4)+2 y=f(x-4)+2
read more ..

Drazil Jan 9, 2019

0

863

5

+115

Functions help

Given f(x) = 2/3(x-5), determine the value of the following:
a) f^-1(-2) b) f^-1(a+1) - f^-1(a)

c) [ f^-1(a)-f^-1(b) ] / a-b read more ..

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Drazil Jan 8, 2019

0

842

3

+115

Quadratics, don't use funtions

Back at it!

These questions really confuse me:
A ball is thrown from the roof of a 25 m tall building. The ball reaches a maximum hiehgt of 45 m two seconds after being thrown, and hits the ground at five seconds. Determine read more ..

Drazil Dec 10, 2018

0

877

1

+115

Math Quadratics, Don't use functions

Research shows that for every $0.10 increase in the price of batteries, there is a 10 pack decrease per day. If a store normally sells 600 packs of batterues $4.95, what is the optimum orice to sell batteries at?

The Answer is $5.475, read more ..

Drazil Dec 10, 2018

0

808

1

+115

Quadratic help, no functions

The equations below have the solution (1,11). Determine the values of h and m.
y = 3(x-h)^2 + 8 read more ..

Drazil Dec 8, 2018

0

811

1

+115

Quadratics don't use functions :)

Determine the value of K, such that y = 3x + k intersects the quadratic equation y = 2x^2 - 5x + 3 at exactly one point.
Please determine algebraicly, and the answer is 5, however, I am looking for the process.

Drazil Dec 8, 2018