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Kamila [148]
3 years ago
13

I need help with this problem please 2/5 divided by 1/7

Mathematics
2 answers:
dem82 [27]3 years ago
6 0
Your answer would be 14/5=2.5

mylen [45]3 years ago
5 0
<span>0.05714285714 hope this helps you</span>
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The diagram shows a right-angled triangle.
son4ous [18]

answer

<em> </em><em>1</em><em>1</em><em>.</em><em>3</em><em> </em><em>c</em><em>m</em><em> </em>

steps

<em>w</em><em>h</em><em>a</em><em>t</em><em> </em><em>is</em><em> </em><em>h</em><em> </em><em>c</em><em>m</em><em> </em><em>to</em><em> </em><em>angle</em><em> </em><em>3</em><em>7</em><em>°</em><em>=</em><em>it</em><em> </em><em>is</em><em> </em><em>a</em><em>n</em><em> </em><em>opposite</em><em> </em><em>side</em>

<em>what</em><em> </em><em>is</em><em> </em><em>1</em><em>5</em><em> </em><em>cm</em><em> </em><em>to</em><em> </em><em>angle</em><em> </em><em>3</em><em>7</em><em>°</em><em>=</em><em>it</em><em> </em><em>is</em><em> </em><em>an</em><em> </em><em>adjecent</em><em> </em><em>side</em>

<em>opposite</em><em> </em><em>and</em><em> </em><em>adjecent</em><em> </em><em>form</em><em> </em><em>a</em><em> </em><em>tan</em>

.°. <em>opp</em><em>/</em><em>adj</em><em> </em><em>=</em><em> </em><em>tan</em><em>(</em><em>3</em><em>7</em><em>°</em><em>)</em><em> </em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>h</em><em>/</em><em>1</em><em>5</em><em> </em><em>=</em><em> </em><em> </em><em>tan</em><em>(</em><em>3</em><em>7</em><em>°</em><em>)</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>h</em><em> </em><em> </em><em>=</em><em> </em><em>1</em><em>1</em><em>.</em><em>3</em><em> </em><em>cm</em>

6 0
3 years ago
What additional information is needed to prove that the triangles are congruent using the AAS congruence theorem?
Kaylis [27]

Answer:

You need to know that pairs of two angles are congruent and the pair of sides adjacent to one of the given angles are congruent

8 0
3 years ago
Read 2 more answers
Which of the following has a specific definition in geometry?
finlep [7]

Answer:

a line

Step-by-step explanation:

In geometry, we can define a line as a straight one- dimensional figure without thickness but extends infinitely in both directions.

If we are to put it into more understandable words, we can describe a line as the shortest distance between any two points.

A line has a specific definition in geometry. Every other option listed do not have specific definition in geometry.

3 0
3 years ago
A collection of 39 coins consists of dimes and nickels. The total value is ​$2.75. How many dimes and how many nickels are​ ther
EleoNora [17]

Answer:

23 nickels and 16 dimes

Step-by-step explanation:

16 dimes = 1.60

23 nickels = 1.15

1.60 + 1.15 = 2.75

4 0
3 years ago
All 423 Wisconsin public schools were all given a rating by the Wisconsin Department ofPublic Instruction based on several varia
Blizzard [7]

Answer:

z = \frac{\bar X -\mu}{\sigma_{\bar X}}= \frac{70.9-71.5}{0.77}=-0.779

From this result we can conclude that the value of 70.9 is 0.78 deviation below the true mean of 71.5 and that can be considered as unusual. If we conduct a hypothesis test or a confidence interval we will see that we have enough evidence to conclude that the true mean is not significantly different from 71.5.

Step-by-step explanation:

For this case from all the population we know that the population mean and deviation are:

\mu = 71.5,\sigma = 4.87

And we take a random sample of size n =40 and we got a sample mean calculated with the following formula:

\bar X =\frac{\sum_{i=1}^n X_i}{n}= \frac{\sum_{i=1}^{40} X_i}{40}=70.9

And we want to test if this value is unusually low.

Since the sample size is large n>30 we can use the central limit theorem who says that the distribution for the sample mean is given by:

\bar X \sim N (\mu , \frac{\sigma}{\sqrt{n}})

And on this case if we replace the values that we have we got:

\bar X \sim N (\mu_{\bar X}=71.5,\sigma_{\bar X}= \frac{\sigma}{\sqrt{n}}=\frac{4.87}{\sqrt{40}}=0.77)

For this case we can calculate how many deviations above or below is our calculated value from the sample of size 40, using the z score given by:

z = \frac{\bar X -\mu}{\sigma_{\bar X}}= \frac{70.9-71.5}{0.77}=-0.779

From this result we can conclude that the value of 70.9 is 0.78 deviation below the true mean of 71.5 and that can be considered as unusual. If we conduct a hypothesis test or a confidence interval we will see that we have enough evidence to conclude that the true mean is not significantly different from 71.5.

3 0
3 years ago
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