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3 years ago

A Boy obtained 80 percent marks.If the full marks is 800,how much did he get?

Mathematics

1 answer:

ollegr [7]3 years ago

5 0

9514 1404 393

Answer:

640 marks

Step-by-step explanation:

80% of 800 is ...

0.80 × 800 = 640

He got 640 marks.

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the letter "T" makes up an estimated 8% of a certain language. Assume this still correct. A random sample of 1000 letters is tak

rusak2 [61]

Answer:

0.242

Step-by-step explanation:

p = 0.08, q = 1 − p = 0.92, and n = 1000.

The mean and standard deviation are:

μ = p = 0.08

σ = √(pq/n) = 0.00858

The z score is:

z = (x − μ) / σ = -0.70

Using a calculator or z score table, the probability is:

P(Z < -0.70) = 0.242

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3 years ago

What is 126 billion divied by 108.2 billion

LUCKY_DIMON [66]

the answer is 0.00116451016

hope it helped :)

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3 years ago

Read 2 more answers

my brother and i walk the same route every day. my beother takes 40minutes to get to school and i take 30minutes to get to schoo

Goryan [66]

In 1 minute, I walk = 1/30

In 1 minute, My brother walk = 1/40

In T minutes, I walk = T*1/30

My brother walk 8 minute before = T + 8

In 1 minute, My brother walk = (T + 8)*1/40

When these two distances are same, then I will catch him.

T*(1/30) = (T + 8)*(1/40)

30*(T + 8) = 40*T

30*T + 240 = 40*T

240 = 10*T

T = 24 minutes

hence, I will catch him in 24 minutes.

Take 5 instead of 8.

My brother walk 5 minute before = T + 5

In 1 minute, My brother walk = (T + 5)*1/40

When these two distances are same, then I will catch him.

T*(1/30) = (T + 5)*(1/40)

30*(T + 5) = 40*T

30*T + 150 = 40*T

150 = 10*T

T = 15 minutes

Hence, I will catch him in 15 minutes.

6 0

3 years ago

Nancy and Kevin collect coins. Nancy has x coins. Kevin has 8 coins fewer than 2 times the number of coins Nancy has. Write and

Tems11 [23]

Answer:

2x+x-8

Step-by-step explanation:

Kevin is 2x-8

Nancy is x

2x-8+x

6 0

3 years ago

Twenty-four distinguishable balls are to be placed in six boxes.(DIFFERENT BOXES) (a) In how many different ways can this be don

zvonat [6]

Answer: a) 124,596, b) 2142691552.

Step-by-step explanation:

Since we have given that

Number of distinguishable balls = 24

Number of boxes = 6

(a) In how many different ways can this be done?

$^{24}C_6\\\\=134,596$

(b) In how many different ways can this be done if box 1 must get 12 balls, box 2 must get 7 balls, box 3 must get 5 balls, and boxes 4, 5, and 6 must be empty?

Number of ways would be

$\dfrac{24!}{12!7!5!}=2142691552$

Hence, a) 124,596, b) 2142691552.

3 0

3 years ago

A Boy obtained 80 percent marks.If the full marks is 800,how much did he get?​

A Boy obtained 80 percent marks.If the full marks is 800,how much did he get?