All categories

2 years ago

Can someone help me with this question? Will give brainliest.

Mathematics

1 answer:

just olya [345]2 years ago

7 0

Answer:

5.2561

step by step explanation:

using BODMAS, multiplication comes before addition.

Therefore,

$\sqrt{1.13 + (2.84 \times 9.33)}$

$\sqrt{1.13 + 26.4971}$

$\sqrt{27.6272}$

Therefore the answer is

5.2561

You might be interested in

The surf instructor has an initial fee of $12 and charges $8 per hour for lessons, which is represented by the equation y = 8x +

Studentka2010 [4]

Answer: 472$

Step-by-step explanation:

6 0

2 years ago

Four brothers and their sister have the average age 7. Four brothers have the average age 6. How old is the sister?

AnnyKZ [126]

Answer:

11 years old

Step-by-step explanation:

If four brothers have the average age 6, then the sum of their ages is

$4\cdot 6=24$

years.

Let x years be the age of sister. If four brothers and their sister have the average age 7, then

$\dfrac{24+x}{5}=7.$

Multiply this equation by 5:

$24+x=35\Rightarrow x=35-24=11.$

The sister is 11 years old.

4 0

3 years ago

A bathtub contains 20 gallons of water. After the drain is opened, there are 14 gallons of water remaining after 30 seconds. Usi

leva [86]

Answer

a decrease of 0.2 gallons per second

Explanation

The drain was open for 30 seconds.

The water that ran out for 30 seconds = 20 - 14

= 6 gallons

Rate of decrease = (change in gallons)/(time taken)

= 6/30

= 0.2

The rate of change in the amount of water remaining in the tub per second will be the same as the one that ran out since the outlet is the same.

So the correct answer from the choices is "a decrease of 0.2 gallons per second".

7 0

3 years ago

7. Two people enter a whispering gallery t want to know where they should stand so they can hear other people whisper. The galle

Nezavi [6.7K]

Answer: Just get closer

Step-by-step explanation:

Walk next to someone to hear them left foot right foot towards them.

6 0

3 years ago

At the local college, a study found that students earned an average of 14.8 credit hours per semester. A sample of 94 students w

ozzi

Answer:

By the Central Limit Theorem, the best point estimate for the average number of credit hours per semester for all students at the local college is 14.8.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Mean of the sample:

14.8 credit hours per semester.

By the Central Limit Theorem, the best point estimate for the average number of credit hours per semester for all students at the local college is 14.8.

6 0

3 years ago