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3 years ago

Plzzzzz help ill mark you plzzzzzzz

Mathematics

2 answers:

marta [7]3 years ago

7 0

Answer:

Step-by-step explanation:

a. 5 3/6 - 1 2/6 = 4 1/6

b. 8 9/12 - 5 10/12

7 21/12 - 5 10/12= 2 11/12

Allushta [10]3 years ago

3 0

A: 5 1/2 - 1 1/3.

Answer: 25/6.

in mix fraction ot would be, 4 1/6

and in decimal from it will be, 4.166667.

B: 8 3/4 - 5 5/6.

Answer: 35/12.

In mix fraction it will be, 2 11/12.

and in decimal from it would be, 2.916667.

You might be interested in

What is the surface area of a cylinder with base radius of 3 and height 8?

Darina [25.2K]

Answer:

66π

Step-by-step explanation:

SA= 2πrh+2πr²

SA= 2π x 3 x8 + 2π x 3x3

= 48π + 18π

=66π

hope this helps!

5 0

3 years ago

Read 2 more answers

A retailer sold an electric item to a customer at a loss of 10 percent the customer purchase it for rs 25425 including 13, perce

Mashutka [201]

Answer: Rs 25,000

Step-by-step explanation:

Given

Retailer sold an electric iron to a customer at a loss of 10%

Suppose the Cost price of iron is $x$

So, selling price is $0.9x$

This price must be equal to $25425$ + VAT

$\Rightarrow 0.9x=25425-0.13(0.9x)\\\Rightarrow 0.9x+0.117x=25425\\\Rightarrow 1.017x=25425\\\Rightarrow x=\text{Rs }25,000$

Thus, the cost price is $Rs.25,000$

5 0

2 years ago

2+2 ..................................needed 20 characters

Sloan [31]

Answer:

plese mark me brainlist

Step-by-step explanation:

thankyou and have nice day

7 0

3 years ago

Read 2 more answers

A professor has learned that three students in his class of 20 will cheat on the final exam. He decides to focus his attention o

balu736 [363]

Answer:

$P(X \ge 1) = 0.509$

$P(X \ge 1) = 0.6807$

Step-by-step explanation:

From the question we are told that

The number of students in the class is N = 20 (This is the population )

The number of student that will cheat is k = 3

The number of students that he is focused on is n = 4

Generally the probability distribution that defines this question is the Hyper geometrically distributed because four students are focused on without replacing them in the class (i.e in the generally population) and population contains exactly three student that will cheat.

Generally probability mass function is mathematically represented as

$P(X = x) = \frac{^{k}C_x * ^{N-k}C_{n-x}}{^{N}C_n}$

Here C stands for combination , hence we will be making use of the combination functionality in our calculators

Generally the that he finds at least one of the students cheating when he focus his attention on four randomly chosen students during the exam is mathematically represented as

$P(X \ge 1) = 1 - P(X \le 0)$

Here

$P(X \le 0) = \frac{ ^{3} C_0 * ^{20 - 3} C_{4- 0}}{ ^{20}C_4}$

$P(X \le 0) = \frac{ ^{3} C_0 * ^{17} C_{4}}{ ^{20}C_4}$

$P(X \le 0) = \frac{ 1 * 2380}{ 4845}$

$P(X \le 0) = 0.491$

Hence

$P(X \ge 1) = 1 - 0.491$

$P(X \ge 1) = 0.509$

Generally the that he finds at least one of the students cheating when he focus his attention on six randomly chosen students during the exam is mathematically represented as

$P(X \ge 1) = 1 - P(X \le 0)$

$P(X \ge 1) =1- [ \frac{^{k}C_x * ^{N-k}C_{n-x}}{^{N}C_n}]$