3 years ago

???????????????????

Mathematics

1 answer:

Yanka [14]3 years ago

7 0

The answer is D

6cm x 8cm x 9cm give you 432cm

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icang [17]

Answer:

$\boxed {y =3 {x}^{2} + 8x + 15}$

Step-by-step explanation:

$y = 3(x + 3)(x + 5)$

Expand/Distribute x+3 in x+5

$y = 3( {x}^{2} + 8x + 15)$

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3 years ago

In how many ways can a subcommittee of 6 students be chosen from a committee which consists of 10 senior members and 12 junior m

givi [52]

Answer:

The number of ways is 13860 ways

Step-by-step explanation:

Given

Senior Members = 10

Junior Members = 12

Required

Number of ways of selecting 6 students students

The question lay emphasis on the keyword selection; this implies combination

From the question, we understand that

4 students are to be selected from senior members while 2 from junior members;

The number of ways is calculated as thus;

Ways = Ways of Selecting Senior Members * Ways of Selecting Junior Members

$Ways = ^{10}C_4 * ^{12}C2$

$Ways = \frac{10!}{(10-4)!4!)} * \frac{12!}{(12-2)!2!)}$

$Ways = \frac{10!}{(6)!4!)} * \frac{12!}{(10)!2!)}$

$Ways = \frac{10 * 9 * 8 * 7 *6!}{(6! * 4*3*2*1)} * \frac{12*11*10!}{(10!*2*1)}$

$Ways = \frac{10 * 9 * 8 * 7}{4*3*2*1} * \frac{12*11}{2*1}$

$Ways = \frac{5040}{24} * \frac{132}{2}$

$Ways = 210 * 66$

$Ways = 13860$

Hence, the number of ways is 13860 ways

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3 years ago

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SashulF [63]

Answer:

B). -3

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scZoUnD [109]

8t + 7 means 8 times a number plus 7.

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BARSIC [14]

The answer is 19/14x + 97/56 :)

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