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Komok [63]
4 years ago
9

Please help me i really need your help

Mathematics
1 answer:
Marina86 [1]4 years ago
5 0

Answer:

Step-by-step explanation:

B

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What is the surface area of the square pyramid? <br><br> The surface area is ____ yd2.
lana [24]

Base Surface Area = 22

=  4 yards^2

Lateral Surface Area =  

2×2√(2/2)^2 + 3^2

2

=  12.649110640674 yards^2

Total Surface Area = 16.649110640674 yards^2

Your Answer: 16.60 rounded to the nearest tenth.

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The answer is A, as it is 3 over on the x axis and 12 up on the y
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There is a bag containing 16 green marbles, 14 blue marbles and 13 red marbles.what is the least amount of marbles that i must p
Licemer1 [7]

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31

Step-by-step explanation:

16+14+1 = 31

There is a possibility that I pick out all (16) green marbles, then all (14) blue ones and the following (31-th) marble must be red

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3 years ago
Kate is one year and six months younger than her sister. If her sister is 14 years and 2 months old,
adell [148]

Answer:

12 and 4 months i think

Step-by-step explanation:

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3 years ago
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8. How many ways can a committee of 5 students be chosen from a student council of 30 students? Is the order in which the member
tankabanditka [31]

Answer: A committee of 5 students can be chosen from a student council of 30 students in 142506 ways.

No , the order in which the members of the committee are chosen is not  important.

Step-by-step explanation:

Given : The total number of students in the council = 30

The number of students needed to be chosen = 5

The order in which the members of the committee are chosen does not matter.

So we Combinations (If order matters then we use permutations.)

The number of combinations of to select r things of n things = ^nC_r=\dfrac{n!}{r!(n-r)!}

So the number of ways a committee of 5 students can be chosen from a student council of 30 students=^{30}C_5=\dfrac{30!}{5!(30-5)!}

=\dfrac{30\times29\times28\times27\times26\times25!}{(120)\times25!}=142506

Therefore , a committee of 5 students can be chosen from a student council of 30 students in 142506 ways.

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3 years ago
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