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Advocard [28]
3 years ago
7

Simplify: (3²-4)/5 A. 1 B. 1.25 C. 1/5 D. 5​

Mathematics
2 answers:
Nikitich [7]3 years ago
7 0

Answer:

A is the correct answer

Step-by-step explanation:

(9 -4)/ 5

5/5

=1

Sauron [17]3 years ago
3 0
The answer to this question is A. 1
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What is the math problem for 9,288 divided by 43
S_A_V [24]

Answer:

9,288 ÷ 43 = 216

Step-by-step explanation:

9,288 ÷ 43

First divide 9,288 by 43  we get quotiest as 216 and remainder 0

= 216

7 0
3 years ago
If the radius of a sphere is halved, what happens to the volume of the sphere? Use your algebra skills to develop a formula for
valkas [14]
Since V = (4/3) * pi * R^3

If R is halved, V' will reduce by a ratio of (1/2)^3 = 1/8

So V' = (1/8)V
4 0
2 years ago
Read 2 more answers
What is Permutations and Combinations?
marissa [1.9K]

Answer:

See below

Step-by-step explanation:

Permutation is to select an object then arrange it and it cares about the orders while Combination is about only selecting an object without caring the orders.

Permutation can be expressed in math as:

\displaystyle{_n P _r = \dfrac{n!}{(n-r)!} \ \ \ (n \geq r) }

where n is a number of total object and r is a number of selected object to arrange. Hence. n cannot be less than r.

Now let's see an example of permutation, suppose we have letter A, B and C. I'd like to know how many ways these words can be arranged:

Since there are 3 letters total and 3 selected letters to arrange then:

\displaystyle{_3 P _3 = \dfrac{3!}{(3-3)!}}\\\\\displaystyle{_3 P _3 = \dfrac{3 \times 2 \times 1}{0!}}\\\\\displaystyle{_3 P _3 = \dfrac{6}{1}}\\\\\displaystyle{_3 P _3 = 6}

Therefore, there are 6 ways to arrange the letters - we can also demonstrate visually:

ABC - 1

ACB - 2

BAC - 3

BCA - 4

CAB - 5

CBA - 6

Notice that if you do visually, you'll get the same answer as the calculation of permutation!

----

Combination can be expressed mathematically as:

\displaystyle{_n C _r = \dfrac{n!}{(n-r)!r!} = \dfrac{_n P _r}{r!} \ \ \ (n \geq r) }

The difference between permutation and combination is that you only find how many ways you can select object in combination. Therefore, no arrange and doesn't care about order, just ways to select.

Suppose we have same 3 letters: A, B and C. I want to find how many ways I can select these 3 letters:

Since there are 3 letters total and 3 selected letters:

\displaystyle{_3 C _3 = \dfrac{3!}{(3-3)!3!}}\\\\\displaystyle{_3 C _3 = \dfrac{3!}{0!3!}}\\\\\displaystyle{_3 C _3 = \dfrac{3!}{3!}}\\\\\displaystyle{_3 C _3 = 1}

Hence, there is only one way to select 3 letters. This makes sense because if you have 3 letters then you can only select 3 letters only one way.

5 0
2 years ago
Solve for x: x - 6 ≤ 3
Mars2501 [29]

Answer:

x≤ 9

Step-by-step explanation:

add 6 to the other side to get x by itself....

8 0
3 years ago
Anyone wanna help me out? PLEASE ASAP
SCORPION-xisa [38]
The perimeter is 32
I'm having a little difficulty finding the area because I forgot how the get the height... if I knew the height I would tell you. 
I am so sorry I can not help all the way. 
but if you find the height  Area= base (11) times height (?)
4 0
3 years ago
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