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3 years ago

Relation or function

Mathematics

1 answer:

Kamila [148]3 years ago

5 0

I need help my self lol XD

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Decide whether you would use a permutation, a combination, or neither. Next, write the solution using permutation notation or co

Zepler [3.9K]

Answer:

Permutation is used.

No. of arrangements = 1260

Step-by-step explanation:

Permutation is used for choosing & arrangement of 'r' out of 'n' objects, when sequence is important.

Total no. of alphabets in CORRECT = 7

C is repeated twice, R is repeated twice

So, Total No. of arrangements = 7 !

(2!)(2!)

= 5040 / 4

= 1260

5 0

3 years ago

Hey guys!!! You think u can help me on this?

CaHeK987 [17]

Answer:

4/3

Step-by-step explanation:

find common denomerator which is 12

so times 3/4 by 3

now its 9/12 + 7/12

get 16/12

3 0

3 years ago

Read 2 more answers

Which two number have an absolute value of 5

serious [3.7K]

Answer:

5 and negative 5

Step-by-step explanation:

The absolute value is the distance from 0 five and negative 5 are both the same distance from zero

7 0

3 years ago

The perimeter of a pentagon is the sum of the lengths of its sides. In a regular pentagon, all sides have the same length.

Oksanka [162]

Since a pentagon has 5 sides, you would divide the perimeter by the number of sides.

641.5/5 = 128.3cm

Therefore, the length of one side of the pentagon is 128.3cm.

7 0

3 years ago

The sum of three numbers is 8. The third is 9

Ierofanga [76]

Answer:

→ First value is 1

→ Second value is 2

→ Third value is 5

Step-by-step explanation:

• let numbers be x, y and z

${ \tt{z = 8y - 9 - - - (eqn \: 1)}} \\ \\ { \tt{10x = 8y - 7 - - - (eqn \: 2)}} \\ \\ { \tt{x + y + z = 8 - - - (eqn \: 3)}}$

• from eqn 2, make x the subject:

${ \tt{x = \frac{8y - 7}{10} }} \\$

• substitute all variables in eqn 3:

${ \tt{ \frac{8y - 7}{10} + y + 8y - 9 = 8}} \\ \\ { \tt{8y - 7 + 10y + 80y - 90 = 80}} \\ \\ { \tt{98y = 177}} \\ \\ { \boxed{ \tt{ \: y = 1.8}}}$

• find z

${ \tt{z = 8y - 9}} \\ \\ { \tt{z = 8(1.8) - 9}} \\ \\ { \tt{z = 14.4 - 9}} \\ \\ { \boxed{ \tt{ \: z = 5.4 \: }}}$

• find x:

${ \tt{x = \frac{8(1.8) - 7}{10} }} \\ \\ { \tt{x = \frac{7.4}{10} }} \\ \\ { \boxed{ \tt{ \: x = 0.74 \: }}}$

Rounding to nearest value:

${ \boxed{ \rm{x = 1}}} \\ { \boxed{ \rm{y =2 }}} \\ { \boxed{ \rm{z = 5}}}$

7 0

2 years ago