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3 years ago

Does somebody knows the answer to this ? rationalize the dominator and simplify 15√6/3√5

Mathematics

1 answer:

Rom4ik [11]3 years ago

4 0

Answer:

sqrt(30)

Step-by-step explanation:

$(15\sqrt{6} )/(3\sqrt{5} ) = (5\sqrt{6} )/(\sqrt{5} )\\$

multiply by $\frac{\sqrt{5}}{\sqrt{5} }$

$(5\sqrt{6} \sqrt{5}) /5$

$5\sqrt{30} /5 = \sqrt{30}$

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A sign in front of a diving board says, "You must be 40 inches tall to dive." What percentage of this height is 34 inches?

galina1969 [7]

Answer:

85%

Step-by-step explanation:

$\frac{34}{40}*\frac{100}{1}=\frac{3400}{40}=85$

What I did here was multiply 34/40 by 100 to get 3400/40 or 85%.

5 0

3 years ago

The mean annual premium for automobile insurance in the United States is $1503 (Insure website, March 6, 2014). Being from Penns

Arturiano [62]

Answer:

It is not evident the mean annual premium in Pennsylvania is lower than the national mean annual premium

Step-by-step explanation:

Given that annual premium for automobile insurance in the United States (Insure website, March 6, 2014), are as follows:

Mean 1440.00

SD 165.00

SEM 33.00

N 25

a) $H_0: \bar x = 1503\\H_a: \bar x$

(left tailed test at 5% level)

b) a point estimate of the difference between the mean annual premium in Pennsylvania and the national mean

= $1440-1503\\=-103$

c) df = 24

standard error of difference = 33.000

t = 1.9091

The 95% confidence interval of this difference:

From -131.11 to 5.11

p value = 0.0683

Since p >0.05, we accept H0

It is not evident the mean annual premium in Pennsylvania is lower than the national mean annual premium

4 0

4 years ago

Long division with 2,000 divided by 3.2

tatiyna

Answer:

625

Step-by-step explanation:

with long division, you just need to remember these five steps, divide, multiply, subtract, bring it down, and repeat.

hope this helps :3

if it did pls mark brainliest

6 0

3 years ago

help help help please

spayn [35]

Answer:

I think the answer is that they are right angles so the measure is 90 degrees. Let me know if that is not an option.

Step-by-step explanation:

6 0

3 years ago

Niki wants to buy a dog bed the cost $87. She earns $6 per week for doing chores. How many weeks will Niki have to do her chores

Viktor [21]

Answer:

The answer to your question is 14.5 weeks

Step-by-step explanation:

Data

Total cost = C = $87

money earned = m = $6

Number of weeks to have the money = w = ?

Process

1.- Write an equation that represents the situation

Weeks = Total cost / Money earned

w = C/m

2.- Substitute the values

w = 87 / 6

3.- Result

w = 14.5

4.- Conclusion

Niki will last 14.5 weeks to have enough money to buy a dog bed.

7 0

3 years ago

Does somebody knows the answer to this ? rationalize the dominator and simplify 15√6/3√5​

Does somebody knows the answer to this ? rationalize the dominator and simplify 15√6/3√5