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3 years ago

Please help I need to show my work

Mathematics

1 answer:

Alinara [238K]3 years ago

3 0

Is your test online or on paper? how would you show work. i’ll comment the answer on this

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How many ways can the words in d-r-a-g-o-n-f-l-y be arranged

GarryVolchara [31]

Answer:

362880 ways

Step-by-step explanation:

The word dragonfly has 9 different letters.

So, to find how many ways this word can be arranged, we just need to calculate the factorial of 9:

First letter has 9 possibilities

Second letter has 8 possibilities (one used)

Third letter has 7 possibilities (two used), and so on.

So the number of ways is:

9*8*7*6*5*4*3*2*1 = 362880 ways

7 0

3 years ago

+<br> N<br> Complementary and supplementary

Sauron [17]

What are you asking?

5 0

3 years ago

Use the function below to find F(3).<br> FX)=(1/6)x

Rashid [163]

F(3) = (1/6)3 = 1/2

The answer is 1/2 or 0.5

6 0

3 years ago

Please answerr!! Math

Morgarella [4.7K]

Answer:

Step-by-step explanation:

i got it on a test

4 0

3 years ago

When Joey mowed lawns for 10 hours and walked dogo

ankoles [38]

The charges for mowing lawns are $5 per hour and charges for walking dogs are $3 per hour.

Step-by-step explanation:

Let,

x be the charge per hour for mowing lawns

y be the charge per hour for walking dogs

According to given statement;

10x+4y=62 Eqn 1

8x+5y=55 Eqn 2

Multiplying Eqn 1 by 5

$5(10x+4y=62)\\50x+20y=310\ \ \ Eqn\ 3$

Multiplying Eqn 2 by 4

$4(8x+5y=55)\\32x+20y=220\ \ \ Eqn\ 4\\$

Subtracting Eqn 4 from Eqn 3

$(50x+20y)-(32x+20y)=310-220\\50x+20y-32x-20y=90\\18x=90$

Dividing both sides by 18

$\frac{18x}{18}=\frac{90}{18}\\x=5$

Putting in Eqn 1

$10(5)+4y=62\\50+4y=62\\4y=62-50\\4y=12$

Dividing both sides by 4

$\frac{4y}{4}=\frac{12}{4}\\y=3$

The charges for mowing lawns are $5 per hour and charges for walking dogs are $3 per hour.

Keywords: linear equation, subtraction

Learn more about linear equations at:

#LearnwithBrainly

5 0

3 years ago