Question

combine the expressions

Answer 1

\[a \sqrt{125y}-b \sqrt{45y}\]

Answer 2

which part of the question is that

Answer 3

got \[(-5a-3b)\sqrt{5y}\]

Answer 4

\[\implies 5a\sqrt{5y} - 3b \sqrt{5y}\]
is this what you got?

Answer 5

is that part a

Answer 6

(5a + 3b)\[\sqrt{5y}\] ? did i get the minus part wrong

Answer 7

The heart rates for puppies are normally distributed, with a mean heart rate of 180 beats per minute (60-160 beats per minute for most adult dogs) with a standard deviation of 6 bpm.

Answer 8

still no @helpme9283

Answer 9

look at what i typed

Answer 10

a. What percentage of puppies will have heart rates of less than 187 bpm?
b. What percentage of puppies will have heart rates between 175 bpm and 187 bpm?
c. If 500 puppies are examined, how many would you expect to have a heart rate of less than 187 bpm?
d. 10% of all puppies will have a heart rate greater than what value?

Answer 11

okay

Answer 12

\[(5a - 3b \sqrt{5y}\]

Answer 13

right

Answer 14

can anybody help me