How many different ways are there to rearrange the letters of the word EXAM, if you don't care if the results is a recognizable word

Answers

Answer 1
Answer: In this case, all letters are unique.

Start by holding the first letter:
E - XAM
E - XMA
E - MAX
E - MXA
E - AXM
E - AMX
So there are 6 combinations here.

Repeat for all 4 letters.

6 x 4 = 24

This is same as 4x3x2x1.

For 3 unique characters, it is 3x2x1.
For 5 unique characters, it is 5x4x3x2x1
And so on...

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Help me plz i dont understand

Answers

1.) 0.4 × 0.7

Ignore the "dots" and multiply "regularly".

4 × 7 = 28

0.4 (1)
× 0.7 (1)
____
28.

add the amount of spaces after the decimal point (the dot).

2

Move the decimal point that many times

2.8

.28

0.28 (answer)

2.) 1.1 × 2.4

1.1 (1)
× 2.4 (1)
______
11 × 4
+ 20 × 11
_______
44
+ 220
_______
264

Move the decimal point 2 times

264

26.4

2.64 (final answer)

#4 through #8: same thing

9.) Chan Hee bought 3.4 pounds of coffee. He spent $6.95 per pound.

To solve this problem, you need to multiply 3.4 by $6.95, to find out how much money that Chan Hee spent on the coffee, in total.

3.4 (6.95)

Now try #10 on your own.
Remember that you want to find out the total amount of money Adita earns by multiplying.

11.) By looking at the chart, you can find out what values you have to multiply.

Focus on Week Two.

Multiply the cost per gallon with gallons bought.

12.) Do the same thing as #11, but for Weeks 4 and 1 separately.

Now, subtract the final value from Week 1 fron Week 4. Remeber to line up the decimals.

Good luck and if you need more help, please message me.

What is 3533÷274737473

Answers

3,533÷274,737,473=0.0000128595490139054
Exactly:

0.00001285954

Scientific Notation: 

1.285954^-5

mary decreased her time in the mile walk from 30 minutes to 24 minutes. What was the percent of decrease?

Answers

(24/30)*100 = 80%

Therefore she decreased from 100% to 80%, which is about 20% decrease.
Thus, the answer is 20%



Another way to do this is.

((Original value - current value))/(Original value) * 100% = percentage of change in value


Which in this case is 
(30-24)/(30) * 100% = 20%

there are 3 cans that store 9 tennis balls consider the number of balls per can find the constant of proportionality for the situation

Answers

The equation is:. Balls = (K) (Cans). The constant of proportionality is ' K' . It's Value is exactly 3 balls/can.

4/9x + 1/5x=58 i need help solving this equation

Answers

So first let’s combine like terms and add 4/9x and 1/5x together to get 29/45x =58. Next, multiply 58 by 45/29 to isolate x, so x=90

What are the first seven multiples of 6, 7, 8, and 9.

Answers

The first seven multiples of those numbers are:

First 7 multiples of 6: 6, 12, 18, 24, 30, 36

First 7 multiples of 7: 7, 14, 21, 28, 35, 42

First 7 multiples of 8: 8, 16, 24, 32, 40, 48

First 7 multiples of 9: 9, 18, 27, 36, 45, 54