1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ch4aika [34]
4 years ago
9

What kind of triangle has three angles of measure 83 degrees, 31 degrees and 66 degrees?

Mathematics
2 answers:
attashe74 [19]4 years ago
8 0
The answer is an acute triangle since all three angles are less than 90
andreyandreev [35.5K]4 years ago
5 0

Hi!

An obtuse angle is one greater than 90 degrees, a right angle one that is 90, and acute less than 90.

An obtuse triangle is one with one obtuse angle, all the rest being acute. A right triangle is one with one right angle, all the rest acute. And finally, an acute triangle is one with three acute angles.

In this case, the angles measure 83 degrees, 31 degrees, and 66 degrees. All of them are acute angles, as they're all less than 90 degrees.

Therefore, the triangle is an acute triangle.

Hope this helped!

You might be interested in
Evaluate 2x-4y for x = 2 and y = 4.
tamaranim1 [39]
<em>Evaluate 2x-4y for x=2 and y=4.</em>
Replace x with 2 and y with 4.
2(2)-4(4)
Simplify.
4-16
-12
3 0
3 years ago
Read 2 more answers
In a right triangle, CosA=0.352 and SinA=0.936 What is the approximate value of tanA?
mr_godi [17]
\tan A=\frac{\sin A}{\cos A}

Proof: \sin\div\cos=\frac{o}h\div\frac{a}h=\frac{o}h\times\frac{h}a=\frac{oh}{ha}=\frac{o}a=\tan

\cos A=0.352,\ \sin A=0.936

\tan A=\frac{0.936}{0.352}

\boxed{\tan A=2.65\overline{90}} <em>(round as needed)</em>
6 0
3 years ago
Read 2 more answers
A researcher compares the effectiveness of two different instructional methods for teaching electronics. A sample of 138 student
yan [13]

Answer:

The 98% confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2 is (-8.04, 0.84).

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for the difference between population means is:

CI=(\bar x_{1}-\bar x_{2})\pm z_{\alpha/2}\times \sqrt{\frac{\sigma^{2}_{1}}{n_{1}}+\frac{\sigma^{2}_{2}}{n_{2}}}

The information provided is as follows:

n_{1}= 138\\n_{2}=156\\\bar x_{1}=61\\\bar x_{2}=64.6\\\sigma_{1}=18.53\\\sigma_{2}=13.43

The critical value of <em>z</em> for 98% confidence level is,

z_{\alpha/2}=z_{0.02/2}=2.326

Compute the 98% confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2 as follows:

CI=(\bar x_{1}-\bar x_{2})\pm z_{\alpha/2}\times \sqrt{\frac{\sigma^{2}_{1}}{n_{1}}+\frac{\sigma^{2}_{2}}{n_{2}}}

     =(61-64.6)\pm 2.326\times\sqrt{\frac{(18.53)^{2}}{138}+\frac{(13.43)^{2}}{156}}\\\\=-3.6\pm 4.4404\\\\=(-8.0404, 0.8404)\\\\\approx (-8.04, 0.84)

Thus, the 98% confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2 is (-8.04, 0.84).

5 0
3 years ago
Suppose that a dog, a goat, and a bag of tin cans are to be transported across a river in a ferry that can carry only one of the
Bingel [31]

Answer:

The task is explained in detail below.

Step-by-step explanation:

We know that  a dog, a goat, and a bag of tin cans are to be transported across a river in a ferry that can carry only one of these three items at once (along with a ferry driver).  

The driver will first transport the goat to the other shore and then return empty. Then they will take a bag of tin and transport it to the other shore, and then they will return with the goat to their original place.  

Then he will leave the goat there and take a dog and carry it to the other shore and then return empty.

And eventually they will take the goat and transport it to the other shore.

4 0
3 years ago
I need help with with question.​
REY [17]
I think it is 15, just by looking at it
5 0
3 years ago
Read 2 more answers
Other questions:
  • which equation is in slope-intercept form and represents a line with slope 3 through the point (9,-4)
    14·2 answers
  • I can get everything else but this one stumps me
    13·1 answer
  • Help me please ? !!!!!!!!!!!!!!
    10·2 answers
  • Paul, Colin and Brian are waiters.
    9·1 answer
  • 5x-7=118 solve for the variable x
    10·2 answers
  • A plane leaves at 11:22 a.m. and arrives at 3:13 p.m.
    12·1 answer
  • Find the area. Simplify your answer.
    9·1 answer
  • Had to repost 4 times because no one's been able to do it.
    8·1 answer
  • The shape is composed of squares and quarter circles. Select all the expressions that represent its perimeter. (Select all that
    14·2 answers
  • Sean received both the 5th highest and the 5th lowest mark in the class. How many students are there in the class?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!