All categories

3 years ago

I’m trying to prove this but I’m stuck... :( Can someone help ?

Mathematics

1 answer:

Tom [10]3 years ago

7 0

I can help, but what are you exactly trying to do here?

You might be interested in

Which logarithmic equation is equivalent to 8^2=64

adell [148]

Answer:

The answer will be the first one...

5 0

3 years ago

Read 2 more answers

Pasta comes with tomato sauce and can be ordered with some, all, or none of these ingredients in the sauce: {onions, garlic,

klio [65]

Answer: Hello!

So the list of ingredients in the sauce are:

{onions, garlic, carrots, broccoli, shrimp, mushrooms, zucchini, green pepper}

there are 8 possible elements in the sauce, so we need to see the combinations for this elements in the sauce.

let's count!

0 ingredients; there is only one combination with 0 ingredients.

1 ingredient: there are 8 combinations with 1 ingredient, one for each.

2 ingredients: now star playing with combinatorics, so the combinatory between A and B is: $\frac{A!}{B!(A-B)!}$ , so for 8 and 2 we get:

$\frac{8!}{2!(6)!} = 8*7/2 = 28$

3 ingredients: Similar as before; the combinatory for 8 and 3 is: $\frac{8!}{3!*5!} = 8*7 =56$

4 ingredients: for 8 and 4 we have: $\frac{8!}{4!*4!} = \frac{8*7*6*5}{4*3*2} = 2*7*5 = 70$

5 ingredients: You can think that now we are counting the combinations of 3 ingredients that we are not using, so the combinations are the same as for 3 ingredients: 56

6 ingredients: Similar as before, here are the combinations of the two ingredients that we are not using: 28

7 ingredients: there are 8 options if we decide to not use only one ingredient.

8 ingredient: there is 1 option in this case, same as the case with no ingredients

And now, we need to add all those combinations:

so C = 1 +8 + 28 + 56+ 70+ 55 + 28 +8 +1 = 512 total combinations.

3 0

4 years ago

Help plz

zvonat [6]

Answer:

1) -5

2) 5

3) -4

4) 7

5) 3

Step-by-step explanation:

1) -20 divided by -4

2) -2 plus 7

3) 20 divided by 5

4) -2 plus 9

5) 20 minus 17

3 0

3 years ago

Read 2 more answers

Four more than three times n equals -5

Verizon [17]

3n+4=-5

do the opposite of adding 4. this means you have to subtract 4 from 4. whatever you do to the problem, you must do to the answer. now subtract 4 from -5.

-5-4=-9

since 4-4=0, we can take 4 out of the equation. now you have:

3n=-9

now divide -9 by 3

-9/3=-3

n=-3

hope this helps :)

5 0

4 years ago

if a model of a tower uses a scale of 1/3 inch=2ft and the actual tower is 207 feet tall what's the height of the model

stepladder [879]

Answer:

The height of the model is 2 feet 10.5 inches.

Step-by-step explanation:

Given:

scale of 1/3 inch=2ft

actual tower is 207 feet

To Find:

The height of the model = ?