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Crank
3 years ago
15

Witch value of x makes the equation x + 7 = 21 true ?

Mathematics
1 answer:
Shkiper50 [21]3 years ago
5 0

Answer:

x=14

Step-by-step explanation:

x+7=21

x=14

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Help!!!me please please
3241004551 [841]

Answer:

35y^4

Step-by-step explanation:

(−7)*y3*(−5)*y

35*y^4

6 0
3 years ago
Read 2 more answers
suppose we want to choose 5 letters, without replacement, from 13 distinct letters. (a) how many ways can this be done, if the o
CaHeK987 [17]

A. The number of possible ways can this be done, if the order of the choices is not taken into consideration is 1, 287 ways

B. The number of possible ways can this be done, if the order of the choices is taken into consideration is 154,440 ways

<h3>What is meant by permutation and combination?</h3>

Combination and permutation are two alternative strategies in mathematics to divide up a collection of components into subsets. The subset's components can be listed in any order when combined. The components of the subset are listed in a permutation in a certain order.

A. We want to select 5 objects from a total 13, without considering the order in which they are chosen.

The correct way to do this exists by utilizing the combination formula since order exists not considered;

Therefore, we have ; 13 C 5 read as 13 combination 5;

Let the equation of combination be n C r = n!/(n-r)!r!

substituting the values in the above equation, we get

13!/(13-8)!8! = 13!/5!8! = 1,287 ways

B. By considering order, we shall be using the permutation formula;

Let the equation of permutation be n P r = n!/(n-r)!

substituting the values in the above equation, we get

13 P 5 = 13!/(13-5)!

= 13!/(13-5)! = 13!/8! = 154,440 ways

To learn more about permutation and combination refer to:

brainly.com/question/11732255

#SPJ4

3 0
1 year ago
If a to the power x by y is equal to 1 then the value of x is​
Mazyrski [523]

Answer:

a^x/y=1              x: 0

Step-by-step explanation: w.k.t,        a^0=1( any variable raised to 0 is 1)

                                    so, here the exponent is x/y which should have been 0 so that answer was 1.

7 0
2 years ago
Please help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Zielflug [23.3K]
C: 1 × 4 × 4

D: 2 × 2 × 4
3 0
3 years ago
Which of these answers is closest to zero-2, 0.2, 1, 1/2
Dmitry_Shevchenko [17]
0.2 is closest to zero
4 0
3 years ago
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