Question about Casio FX-115ES Scientific Calculator

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58 divide by 7

I cant really figure it out even though I sing the 7 song like this"7,14,21,28,35,42,49,56,63,73. I dont know what else to do.So what should I do?



Kaitlyn

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Divide by using pencil and paper...
or use google.
and i believe it is 8 and 2/7
otherwise known as 8.28571429

Posted on Mar 01, 2009

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How do I calculate wavelength given that the frequency of radiation is 5.10×10 to the -7?


First of all you need a scientific calculator, one with sin cos, tan, log etc. If you do have one, look for a key marked EE (Texas Instruments) or x10^x (Casio) or EXP (Casio, Sharp, Canon).
To enter 5.10*10^(-7) ,
type in
5.10[EXP] (-)7 then ?nter, Exe, or =.

Sep 30, 2015 | Calculators

1 Answer

Write this ratio as fraction in lowest terms.


Both numbers are even, so let's start by dividing by 2.

$9.08 to $8.24

Both numbers still even, divide by 2 again.

$4.54 to $4.12

Both numbers still even, divide by 2 again!

$2.27 to $2.06

One number is not even, so we don't need to divide by an even number again.

To see if 3 goes into the numbers evenly, add up the digits of the number and see if 3 goes into the total evenly. If yes, the number is divisible by 3.

2+2+7= 11, 1+1 = 2. 3 does not go evenly into 2, therefore 3 does not go evenly into $2.27.

Numbers don't end in 0 or 5, so 5, 10 and 15 do not go into them evenly.

7 does not go in evenly

To see if 9 goes into the numbers evenly, add up the digits of the number and see if 9 goes into the total evenly. If yes, the number is divisible by 9.

We added up the digits and got 11, so 9 does not go in evenly into $2.27.

See if 13 goes into the numbers evenly. No.

See if 17 goes into the numbers evenly. No.

When do we stop? 17 squared is 289, which is higher than both numbers so we can stop!

We have the number in lowest terms at $2.27 to $2.06.

Good luck.

Paul

Mar 25, 2015 | Calculators

2 Answers

I need to know how to Divide $3,157.00 into 58%


$3157 divided by 58% = $3157 x .58 = $1831.06

Jan 06, 2015 | Calculators

1 Answer

How come i dont get the right answer for example 120 divided by tan68 = -58 instead of 45?


Make sure your calculator is set to the desired angular mode.

The quotient of 120 divided by the tangent of 68 radians is about -58.82, as your calculator is giving you.
The quotient of 120 divided by the tangent of 68 degrees is about 48.48 . The quotient of 120 divided by the tangent of 68 grads is about 65.97 .

Oct 06, 2014 | Casio FX-9750GII Graphing Calculator

1 Answer

How do i factor numbers on a ti-30xs calculator


This calculator does not have a key that you can use to find the prime factor of an integer.
You can however use the calculator to find the factors
1. If number is even divide it by 2
Keep dividing by 2, while keeping track of how many times you divided by 2.
If you divided 5 times by 2 before getting an odd number, then your first factor is 2^5
2. Now try dividing by 3, keep track of the number of times you divided by 3 before you could not divide by 3 any more. If you divided 0 times by 3, your second factor is 3^0, or 1 and 3 is not a factor.
If you divided 4 times by 3, your second factor is 3^4
3. Divide by 5, until you can't any more. Keep track of the number of times you divided by 5.
4. Divide by all other prime numbers 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, etc. For each prime number, keep track of how many times you divided by it, until you could not any more.

Example: 23100
Division by 2
23100/2=11550 ---------> 1 division by 2
11550/2=5775 ----------> 2 divisions by 2
Note that 5775 is not divisible by 2. No more divisions by 2.
First factor is 2^2


Division by 3:
5775/3=1925 ----------> 1 division by 3
1925/3=641. 66667 Not an integer. No more divisions by 3.
2nd factor is 3^1

Division by 5 (number ends in 5)
1925/5 =385 -------> 1 division by 5
385/5=77 ----------> 2 divisions by 5 and no more (quotient does not end in 0 or 5)
3rd factor is 5^2

Division by 7
77/7=11 --------> 1 division by 7, and no more
4th factor is 7^1=7

Division by 11
11/11=1
5th factor is 11^1=11

Assembling the factors 2^2, 3^1, 5^2, 7, 11
Prime factorization of 23100 is
23100=(2^2)(3)(5^2)(7)11

Dec 18, 2013 | Texas Instruments TI-30XA Calculator

1 Answer

I dont understand why I keep getting the wrong exponet in trying to figure out 1500nm divided by 10^9. the answer I get is 1.5 *10^-7 -but the answer is 1.5*10^-6. What am I doing wrong?


Without knowing exactly what you're doing I can't be sure, but I suspect you're entering the 10^9 as something like 1 0 EE 9 .

1 0 EE 9 gives you 10 * 10^9, which is 10^10. You should be doing this as 1 5 0 0 / 1 EE 9 = .

Nov 06, 2012 | Texas Instruments TI-30XA Calculator

1 Answer

I need the EXACT solution for -7 + square root of 61 divided by 2. I have a Ti-30XA calculator and I don't know how to do this.


It is unclear whether your equation is:

a: ((SQRT61) - 7) / 2
or
b: ((SQRT61) / 2) - 7

For a:
Type 61 SQRT.
Subtract 7.
Equals.
Divide by 2.
Equals. (Should be 0.4051248...)


For b:
Type 61 then SQRT.
Then divide by 2.
Equals.
Then subtract 7.
Equals. (Should be -3.094875...)

Good luck.

Apr 15, 2011 | Texas Instruments TI-30XA Calculator

1 Answer

I am trying to see how do I insert a fraction on to the TI83 on a problem such as 58 2/3*18 1/2*3/4 divided by 27?


You do it with lots of parentheses.

Type ((58+2/3)*(18+1/2)*(3/4))/27
Then press MATH button then 1 to get the frac. Then press ENTER. You should get 814/27.

Jul 03, 2009 | Texas Instruments TI-83 Plus Calculator

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