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4 years ago

Hurry I Will Give Brainliest!!

Mathematics

2 answers:

beks73 [17]4 years ago

7 0

Answers:

Vertex
3
middle

If an angle is labeled with a single letter, that letter represents the  vertex  of the angle.

If more than one angle has the same vertex, you must use  3  points to name the angle. The middle  point named must be the vertex.

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Explanation:

If we have a single triangle, and no other extra lines, then we can use single letters to name the three angles. Each vertex of the triangle corresponds to the vertex of that angle.

If you were to draw many triangles, in which some may or may not overlap, you'll mostly likely need to name the angle using 3 letters. This is so you are very specific about which angle you're talking about. The middle letter is always the vertex. The left and right letters are points on the arms of the angle. The order of the left and right letters doesn't matter as long as the middle letter stays the same. So something like angle ABC is the same as angle CBA.

klio [65]4 years ago

7 0

First is vertex , the 3 , than angles

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a college freshman must take a science course ,humanities course, and a mathematics course.if she ay select any of 6 science cou

12345 [234]

Answer: 96 ways

In this case, the freshman must take one class each from Science(6 courses), Humanities(4 courses) and Mathematics( 4 courses).
Then to know how many ways she can arrange you just need to multiply the each course count (it would different if she has to take more than one class).
The calculation would be: 6 x 4 x 4= 96 ways.

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4 years ago

PLEASE HELP ME!!!! ASAP PLEASE!

german

Answer:

We know that since it's a square, the lenght size is the same on all sides. We can simply use pythagoras theorem:

a^2 + a^2 = 13.5^2

13.5^2 = 182,25‬

182,25 : 2 (because there are 2 'a') = 91,125

The square root of 91,125 is 9,55 feet.

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4 years ago

HELPPPPPPPPPPPPPPPPPPPPPPP T^T PLEASE ANSWER!!!!

likoan [24]

Answer:

7 miles per hour.

Step-by-step explanation:

Right now, the relationship in the problem represents 3 $\frac{1}{2}$ miles in hours. To find out what the unit rate is (number of miles per mile), we need to multiply both sides of the equation show BeLoW:

3 $\frac{1}{2}$ = $\frac{1}{2}$

7 miles = 1 hour

Therefore, Doug's average speed in miles per hour is 7 (7 miles per hour).

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3 years ago

Find the area of the helicoid (or spiral ramp) with vector equation r(u, v) = ucos(v) i + usin(v) j + v k, 0 ≤ u ≤ 1, 0 ≤ v ≤ 9π

Natasha2012 [34]

Let $H$ denote the helicoid parameterized by

$\mathbb r(u,v)=u\cos v\,\mathbf i+u\sin v\,\mathbf j+v\,\mathbf k$

for $0\le u\le1$ and $0\le v\le9\pi$ . The surface area is given by the surface integral,

$\displaystyle\iint_H\mathrm dS=\iint_H\|\mathbf r_u\times\mathbf r_v\|\,\mathrm du\,\mathrm dv$

We have

$\mathbf r_u=\dfrac{\partial\mathbf r(u,v)}{\partial u}=\cos v\,\mathbf i+\sin v\,\mathbf j$
$\mathbf r_v=\dfrac{\partial\mathbf r(u,v)}{\partial v}=-u\sin v\,\mathbf i+u\cos v\,\mathbf j+\mathbf k$
$\implies\mathbf r_u\times\mathbf r_v=\sin v\,\mathbf i-\cos v\,\mathbf j+u\,\mathbf k$
$\implies\|\mathbf r_u\times\mathbf r_v\|=\sqrt{1+u^2}$

So the area of $H$ is

$\displaystyle\iint_H\mathrm dS=\int_{v=0}^{v=9\pi}\int_{u=0}^{u=1}\sqrt{1+u^2}\,\mathrm du\,\mathrm dv$
$=\dfrac{9(\sqrt2+\sinh^{-1}(1))\pi}2$

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3 years ago

How to do this problem

Alex17521 [72]

X + 5x is 5yx. thats the Nswer

6 0

3 years ago

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