15 POINTS AND BRAINLIEST TO WHO ANSWER FIRST BUT HURRRRRYYYY!!!!!!!!!!!!

Mathematics

2 answers:

ANTONII [103]3 years ago

6 0

The last one

The first one

The second one I was right but my reasoning was wrong I didn’t read it correctly. The last one is where you add the two that are less than the greatest number and if the sum is bigger than the greatest number, it forms a triangle. That says SIDES I thought all of them said sides but the first and second ones are angles. If you add all the angles and they all add up to 180 degrees, then it forms a triangle. Sorry for the wrong reasoning.

Strike441 [17]3 years ago

4 0

The answer is D. This is because a triangle must be 180 degrees, and both A and B are equal to 180. For the sides, you simply follow a squared plus b squared equals c squared. D doesnt fit that equation, so the answer is D.

You might be interested in

What is the greatest number of relative maximum that a polynomial of degree 15 can have?

alisha [4.7K]

Answer:

i dont know

Step-by-step explanation:

4 0

2 years ago

Please help i’ll give you brainliest and a thanks ❤️

zubka84 [21]

1. 2⁰
2. 2¹
3. 2-¹
4. 2⁰

7 0

2 years ago

Read 2 more answers

Can a pair of angles be vertical and supplementary? Give an example or nonexample, with angle measurements, to support your answ

Sergeeva-Olga [200]

I dotn believe that a pair of angles can be vertical and supplementary. because vertical angles are across from each other, and supplementary angles are two angles next to each other (adjacent) that have a sum of 180. im not sure how to give an example/nonexample.

4 0

3 years ago

Read 2 more answers

A cone has a diameter of 18 units and height of 8 units. What is its volume?

Harlamova29_29 [7]

The answer is 10 volume

6 0

2 years ago

Given u = −8i − 3j and v = −12i − 7j, what is projvu?

8090 [49]

Answer:

(b) -7.275i -4.244j

Step-by-step explanation:

The projection of vector u onto vector v is the product of the unit vector v, the magnitude of vector u, and the cosine of the angle between them.

The dot product gives the product of the magnitudes of the two vectors and the cosine of the angle between them. To find the projection, we must divide the dot product by the magnitude of v and multiply by the unit vector in the direction of v.

$proj(u,v)=(\vec{u}\cdot\vec{v})\cdot\dfrac{\vec{v}}{|\vec{v}|^2}=\dfrac{((-8)(-12)+(-3)(-7))(-12\vec{i}-7\vec{j})}{(-12)^2+(-7)^2}\\\\=\dfrac{-(96+21)(12\vec{i}+7\vec{j})}{144+49}=-\dfrac{117}{193}(12\vec{i}+7\vec{j})\approx\boxed{-7.275\vec{i}-4.244\vec{j}}$

7 0

2 years ago