3 years ago

There are 9 new books and 4 used books on a shelf.

Mathematics

2 answers:

barxatty [35]3 years ago

8 0

12:9 and 4:12 , I'm pretty sure that should be correct

Nataly [62]3 years ago

7 0

The CORRECT answer is:
a)13:9
b)4:13

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Phoenix [80]

Answer:

Step-by-step explanation:

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3 years ago

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3 years ago

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3 years ago

Given a right triangle with legs a, b and hypotenuse c, solve for b if a= 72 and c= 75

kotykmax [81]

Answer:

The answer is a. 21.

Step-by-step explanation:

We solve this question by using Pythagoras theorem to relate the sides of a right angled triangle.

Here,

Hypotenuse of the given triangle(c)=75

Two sides of right angled triangle are:

a=72

b=?

Then,

for a given right angled triangle abc,

Using Pythagoras theorem,

$c=\sqrt{a^{2} +b^{2} }$

Squaring on both sides,

$c^{2} =a^{2}+b^{2}$

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3 years ago