3 years ago

75% students out of 80 are present in a test , the students absent are :

Mathematics

1 answer:

sergeinik [125]3 years ago

4 0

Answer:

20 students are absent

Step-by-step explanation:

75/100 × 80 = 60

If 60 were present out of the 80

80 - 60 = 20

Have a great day :)

You might be interested in

for a store contest four out of every 65 people who visit the store will receive a free DVD if 455 people visit the store how ma

Otrada [13]

If the rate at which they are giving the DVDs is the same then it is 4/65 or 16.25% or 0.1625.

Now just multiply 455 by the rate (4/65 or 16.25% or 0.1625) to find how many DVDs were given.

455 × (4/65) = 28

28 DVDs were given away

hope it helps :)

5 0

3 years ago

4x + 5y = -3<br> 6x - 2y = 5<br> x = <br> y =

mezya [45]

Answer: look at the picture

Step-by-step explanation: Hope this help :D

8 0

2 years ago

Which of these skills do you think you could teach someone else?

JulsSmile [24]

Writing algebraic expressions

4 0

3 years ago

Read 2 more answers

Find the radius of a circle given that the area is three times its circumference

lbvjy [14]

Answer:

Radius of the circle = 6 units

Step-by-step explanation:

Let the radius of the circle be r

According to the given condition:

Area of the circle = 3 times the circumference of the circle

$\therefore \pi r^2 =3\times 2\pi r\\\therefore r^2 = \frac{3\times 2\pi r}{\pi}\\\therefore r^2 = 3\times 2r\\\therefore r = 6\: units\\$

5 0

3 years ago

If (x, 3.4) is a solution to the equation 3x – 5y = 55, what is the approximate value of x?

Whitepunk [10]

The answer is 5(11+y)/3

7 0

3 years ago

Read 2 more answers