## Elias H.'s Resources

A common mistake on this problem is to think of saving percents and write that the most you can spend for lunch is   10x.92x.85=\$7.82. Don't subtract the .08 and .15. respectively from 1, its actually wrong.   The correct way is to write x(1.15)(1.08)=\$10.00. Then x=8.05...

First solve for lengths. The absolute value of the line segment is 16 units. So to get to a midpoint you must move 8 units along the axis.   -11 plus 8 equals - 3 which is the midpoint as denoted from the axis of segment AB.

Your expression looks like this.   ((x2-2)x)/x3+3   It is not possible to make any siginificant improvement on the numeration or denominator.   You should get something like   dy/dx=(-6+9 x^2+4 x^3)/(3+x^3)^2   as your...

it seems that the final part of your question hasn't been written and didn't go through. For this problem you may want to remember the   68–95–99.7 rule   If one standard deviation is 5.1 percent or scores, then 68 percent of the class was between 76.4 and 86.5.

Find the area (answer)

As a problem solving strategy for this problem you might realize that the line 1-cos2 exactly cuts the rectangle [0,pi]X[0,1] into areas that correspond. Because the minima in the function have the same shape as the maxima in the function you get pi/2. Think of areas as they "invert"....

The easiest way to start this is to type "Plot sin x cos y" into wolfram alpha.   Note that there is a certain value for x in which sin (x) = 0 and a certain value for y in which cos(y) = 0. These values associate with two path lines that form a cross on the graph of zero...

find the number (answer)

7 added: +7 5 times a number: 5(x)   result is equal to: = 3(x)   5x+7 = 3(x)   subtract here and re arrange     2x=-7   divide here   x=-3.5 ANS

indeed correct

For a random trinomial your most reliable method is setting it equal to zero and using the quadratic formula. Before using it check a part of that formula called the discriminant. This will tell you a lot, such as if your trinomial even can be factored.

You might find this helpful.   Y<" " essentially means the points bellow " ". Y>" " essentially means the points above " ". X<" " the points to the left of " ". X>" " the points to the right...

this is a simple ration if the larger is 45 we need to shrink down, shrink down by 1/3. you get 15 inches.

we say that m = 2/7. There isn't enough given imformation to fill in the entire equation y = mx+b, so you can just right y=(2/7)x+b. Otherwise, find more givens.

There are three triangles to consider. The most important triangle is the shallowest one which we may call the low margin triangle. This triangle has a measure of 2.85 degrees.   We have A=2.85 and side equal to .5.   We use tan(2.85) = x/.5 .   we get ...

Parallelograms (answer)

This is a square with a bow tie in the center. There are 12 angles possible and the center ones are 90 degree in measure and the outer ones are 45 degrees in measure.   CED is one of the angles measuring 90 degrees. Solve 5z+10=90, 5z=80, z= ?   We get z= 40.

hey christmas is over and its a new holiday. New people, new toys, wooded justice and lots of fun.  use siri to do all your mathematical problems. Have a fun time. Siri, "multiply 35 and 16". Siri multiply 88 and 101.   Its takes hard work. Study hard love learning.

When the product of three consecutive integers is decreased by the cube of the smallest, the result is 85. What are the integers?   call x y z as x, x+1, x+2 note that the cube of the smallest is x^3 come up with the polynomial 1-3-2 as 1x^3+3x^2+2x then...

For anyone who wants to learn a language, you have three options: the class, the app, or the stranger or friend. Say how are you in a number of languages and learn how to say sir and pal buddy or dude comrade ecetera in different languages. Once you know languages you can study demographics. A tutor may or may not be necessary. The more fluent the speaker you find the better.   Rosetta... read more

lets call the 3 hours 3x and the 12hours 12y since these arena is scalable we can assume randomly that the pool is say 36 big.   We learn that 3x drained the pool at a rate of 12 per unit and 12y drained the pool at a rate of 3 per unit. The new rate is the sum, which is 15. it takes...

Help please? (answer)

set up 10x+12y that is your sum of monies. skip over see 416 dollars total in a week. 10x + 12y = 416 and note that x doubles y because she works in the office twice as long as she drives the tractor. thus your equation is y = 1/2x   we get an equation and need to interpolate...