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3 years ago

Two ratios that are equvalent to 27:9

Mathematics

2 answers:

lions [1.4K]3 years ago

8 0

Answer:

81:27 and 135:45

Step-by-step explanation:

Equivalent ratios are rations that are equal to another value or amount.

81:27 are basically 27:9 multiplied by 3 on both sides so are equivalent

135:45 are 27:9 but multiplied by 5 on both sides.

Alex787 [66]3 years ago

4 0

Answer:

Step-by-step explanation:

hello :

1) divid by 3 : 27:9= 9/3

2) 9/3 = 3/1

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You roll a dice three times what is the probability that you roll an even number on the first roll, and odd on the second roll a

Dafna1 [17]

<h3>Answer:</h3>

D. 1/24

<h3>Step-by-step explanation:</h3>

Assuming the die is fair and the events are independent, the probability of the series of events is the product of the probabilities of the individual events.

p(even) = 3/6 = 1/2

p(odd) = 3/6 = 1/2

p(5) = 1/6

Then the joint probability is ...

.. (1/2)·(1/2)·(1/6) = 1/24

7 0

3 years ago

Help me please math

Dominik [7]

13+9=22

5+18=23

22x23=506

½x5x13=32.5

9x5=45

½x9x18=81

506-32.5-45-81=347.5

5 0

2 years ago

A class survey in a large class for first-year college students asked, “About how many minutes do you study on a typical weeknig

Anika [276]

Answer: (110.22, 125.78)

Step-by-step explanation:

The confidence interval for the population mean is given by :-

$\mu\ \pm z_{\alpha/2}\times\dfrac{\sigma}{\sqrt{n}}$

Given : Sample size = 463

$\mu=118\text{ minutes}$

$\sigma=65\text{ minutes}$

Significance level : $\alpha=1-0.99=0.01$

Critical value : $z_{\alpha/2}=z_{0.005}=\pm2.576$

We assume that the population is normally distributed.

Now, the 90% confidence interval for the population mean will be :-

$118\ \pm\ 2.576\times\dfrac{65}{\sqrt{463}} \\\\\approx118\pm7.78=(118-7.78\ ,\ 118+7.78)=(110.22,\ 125.78)$

Hence, 99% confidence interval for the mean study time of all first-year students = (110.22, 125.78)

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3 years ago

Can someone please help, I’ll mark as brainliest

BaLLatris [955]

Answer: (3,inf)

(-inf,3)

Step-by-step explanation:

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2 years ago

Find the measure of the angle.

Finger [1]

Answer:

the awnser should be. 165

5 0

2 years ago

Read 2 more answers