Mathematics: In mrs. garrett’s english class, 80% of the students were present last thursday. she had 20 students in class thursday. what is the total number of students enrolled in her class?

In mrs. garrett’s english class, 80% of the students

rayne40

10.03.2022

amount enrolled = 25

Step-by-step explanation:

amount enrolled * percent = student who were there

amount enrolled * .80 = 20

divide each side by .8

amount enrolled * .8/.8 = 20/.8

amount enrolled = 25

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cacaface311

05.12.2022

TV is 3 inches tall.

Step-by-step explanation:

Given: Diagonal length of TV is 5 inch

Width of TV is 4 inches.

Considering TV to be in rectangle shape.

Lets assume the TV height to be "x"

Diagonal form a right angle triangle as shown on picture attached.

∴ using pathagorean theoram to find the height of TV.

$h^{2} = a^{2} + b^{2}$ , where h is hypotenous, a is width or adjacent and b is height or opposite side.

∴ $5^{2} = 4^{2} + x^{2}$

⇒ $25= 16+x^{2}$

subtracting both side by 16

⇒ $25-16= x^{2}$

⇒ $x^{2} = 9$

Taking sqaure root on both side.

Remember, √a²= a

⇒ $x= \sqrt{9}$

∴ x= 3

Hence, the height of TV is 3 inches.

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