3 years ago

There are 13 boys and 16 girls in Ms. Lau's class. What is the ratio of boys to the whole class?

Mathematics

2 answers:

Mumz [18]3 years ago

6 0

Answer:

13: 29

Step-by-step explanation:

There are 13 boys.

29 is the total number of the whole class because 13 + 16 = 29

The ratio is therefore 13:29.

saveliy_v [14]3 years ago

4 0

Answer:

13:29

Step-by-step explanation:

16+13= 29

You might be interested in

a store's cost for a stereo was $27. The markup was 75%. A customer purchased it on sale for 40% off. What was the purchased pri

Pachacha [2.7K]

Well a markup is the amount added to the current price so 75% added to 27$ then subtract 40%

5 0

3 years ago

Please help me thank you.

Alona [7]

Answer:

$\large\boxed{1.\ (4)^{-3x^2}=\left(\dfrac{1}{4}\right)^{3x^2}}$

$\large\boxed{2.\ ab^{-3x}=a\left(\dfrac{1}{b}\right)^{3x}=a\left[\left(\dfrac{1}{b}\right)^3\right]^x}$

Step-by-step explanation:

$Use:\ a^{-n}=\left(\dfrac{1}{a}\right)^n\\------------\\\\(4)^{-3x^2}=\left[(4)^{-1}\right]^{3x^2}=\left(\dfrac{1}{4}\right)^{3x^2}$

$Use:\ a^{-n}=\left(\dfrac{1}{a}\right)^n\ and\ (a^n)^m=a^{nm}\\--------------------\\\\ab^{-3x}=a\cdot b^{-3x}=a\left[(b)^{-1}\right]^{3x}=a\left(\dfrac{1}{b}\right)^{3x}\\\\ab^{-3x}=a\left(\dfrac{1}{b}\right)^{3x}=a\left[\left(\dfrac{1}{b}\right)^3\right]^x$