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3 years ago

Somebody help me ASAP now

Mathematics

2 answers:

tatyana61 [14]3 years ago

8 0

Answer:

x = 4.35

Step-by-step explanation:

x = $\sqrt{10^2-9^2}$ ≈ 4.35

<em>good luck, i hope this helps :)</em>

aev [14]3 years ago

4 0

To give you a boost multiply the hypotenuse by sin(θ) to get the length of the side opposite to the angle.

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If<br> f(x) = 13x + 1, then<br> f-1(x) =

amid [387]

Answer:

(x-1)/13

Step-by-step explanation:

y = 13x+1

To find the inverse, exchange x and y

x = 13y+1

Solve for y

Subtract 1 from each side

x-1 =13y+1-1

x-1 = 13y

Divide each side by 13

(x-1)/13 = y

The inverse is (x-1)/13

6 0

3 years ago

Read 2 more answers

A magazine claims that the mean amount spent by a customer at Burger Stop is greater than the mean amount spent by a customer at

netineya [11]

Answer: Option "B" is correct.

Step-by-step explanation:

Since we have given that

α= 0.10

Let the population variances are equal and samples are random and independent.

Let $\bar{x}$ be the mean amount spent by a customer at Burger Stop.

Let $\mu$ be the mean amount spent by customer at Fry World.

So, it has given that

the mean amount is spent by a customer at Burger stop is greater than the mean amount spent by a customer at Fry World.

So, Hypothesis would be :

$H_0:\bar{x}=\mu\\\\H_1:\bar{x}>\mu$

Hence, Option "B" is correct.

3 0

3 years ago

The times of all 15 year olds who run a certain race are approximately normally distributed with a given mean Mu = 18 sec and st

Brrunno [24]

The percentage of runners having times less than 14.4 sec is 0.15%. Then the correct option is A.

<h3>What is normal a distribution?</h3>

It is also called the Gaussian Distribution. It is the most important continuous probability distribution. The curve looks like a bell, so it is also called a bell curve.

The times of all 15-year-olds who run a certain race are approximately normally distributed with a given mean (μ) = 18 sec and standard deviation (σ) = 1.2 sec.

The runners have times less than 14.4 sec.

The z-score is a numerical measurement used in statistics of the value's relationship to the mean of a group of values, measured in terms of standards from the mean.

$\rm z-score = \dfrac{X - \mu}{\sigma }\\\\z-score = \dfrac{14.4- 18}{1.2}\\\\z-score = -3$

Then the Percentage will be

$\rm P(X < 14.4) = P(z < -3) = 0.0013499 = 0.13499\ \% \approx 0.15\ \%$

More about the normal distribution link is given below.

brainly.com/question/12421652

3 0

3 years ago

Which expression represents the number of cents in d dimes and n nickels?

Usimov [2.4K]

The best and most correct answer among the choices provided by the question is the first choice , 10 d + 5 n.
Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.

5 0

4 years ago

Help fast I NEED IT RN

Ivahew [28]

Answer:

204 people

Step-by-step explanation:

The manager has interviewed 50 people, which is 1/6 of 300. Just times it by 6 to get an approximate amount of people :)

8 0

3 years ago