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timofeeve [1]
3 years ago
7

Assalaamu alaikum...,

Mathematics
2 answers:
aleksandr82 [10.1K]3 years ago
4 0

Answer:

see below

Step-by-step explanation:

alaikum salam.

<u>2. </u><u>find</u><u> </u><u>cos Ф,   sin Ф,  tan Ф</u>

cos Ф = 5 / 13

Ф = 67.38

sin Ф = 12 / 13

Ф = 67.38

tan Ф = 12 / 5

Ф = 67.38

-----------------------

<u>3. find sin β,  cos β,  tan β</u>

sin <u>β</u> = 4 / 5

<u>β</u> = 53.13

cos <u>β</u> = 3 / 5

<u>β</u> = 53.13

tan <u>β</u> = 4 / 3

<u>β</u> = 53.13

77julia77 [94]3 years ago
4 0

Answer: Step-by-step explanation

2.

cos Ф = 5 / 13 ,       Ф = 67.38

sin Ф = 12 / 13 ,      Ф = 67.38

tan Ф = 12 / 5         Ф = 67.38

3.

sin β = 4 / 5    β = 53.13

cos β = 3 / 5    β = 53.13

tan β = 4 / 3     β = 53.13

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The measure of &lt;1 = 20x + 21 and the measure of &lt;2 = 30x - 29.
geniusboy [140]

Answer:

Both equal 121 degrees

Step-by-step explanation:

Vertical angles are equal, and  and 2 are indeed vertical angles.  They are the "top" and "bottom" of the x formed.  So you can use this.

angle 1 = angle 2

20x + 21 = 30x - 29

50 = 10x

5 = x

So just plug this in.

20x + 21

20(5) + 21

121

30x - 29

30(5) - 29

121

So both are 121.

8 0
3 years ago
The principal of a large high school wants to know if students spend more than 1 hour doing homework per night, on average. To i
MrRissso [65]

Answer:

If we define the random variable X ="time spend by the students doign homework"

And we want to tes t is students spend more than 1 hour doing homework per night, on average (alternative hypothesis), so then the system of hypothesis for this case are:

Null hypothesis: \mu \leq 1

Alternative hypothesis: \mu >1

And they wnat to use a sample size of n = 100 and a significance level of 0.05

Step-by-step explanation:

Previous concepts

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".  

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".

Solution to the problem

If we define the random variable X ="time spend by the students doign homework"

And we want to tes t is students spend more than 1 hour doing homework per night, on average (alternative hypothesis), so then the system of hypothesis for this case are:

Null hypothesis: \mu \leq 1

Alternative hypothesis: \mu >1

And they wnat to use a sample size of n = 100 and a significance level of 0.05

7 0
3 years ago
What is the greatest common factor of 27,45,63 and then 24 40 64
Aleks [24]

Answer:

27

Step-by-step explanation:

5 0
3 years ago
Number 3 explanation to why the answer is c
Semmy [17]
Number of cars washed by the eight teams per hour = 2 * 8 = 16 cars.
Number of cars washed by the eight teams in 5 = 16 * 5 = 80 cars.

The teams should charge $600/80 = $7.50
7 0
3 years ago
Write an equation that you can use to solve for x.<br><br> Enter your answer in the box.
patriot [66]
X + 60 = 100 (because they are vertical angles, which means that because they are directly opposite of each other, they are of the same measurements).

Solve for x. Isolate the x, subtract 60 from both sides

x + 60 = 100

x + 60 (-60) = 100 (-60)

x = 100 (-60)

x = 40

40° should be your answer

hope this helps
8 0
3 years ago
Read 2 more answers
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