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Stella [2.4K]
2 years ago
8

I don’t understand help pls

Mathematics
1 answer:
UNO [17]2 years ago
6 0
The answer is 6.4 I hoped this helped
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Can someone please give me the answers to this? ... please ...
Hoochie [10]

Step-by-step explanation:

come on ! based on all the other questions that have been answered AND explained you should be able to find these answers yourself now. what is still unclear ?

distance between 2 points (x1, y1) and (x2, y2):

Pythagoras : c² = a² + b²

c is the connection between the 2 points (and which length we need to find).

c = sqrt(a² + b²)

a and b are differences of the x coordinates and the differences of the y coordinates of these 2 points.

a = x1 - x2

b = y1 - y2

this is simply because, when you look at the coordinate grid, these 3 items make a right-angled triangle.

don't worry about any negative values for a and b, as the square eliminates the negative sign.

midpoint between 2 points :

we could use Pythagoras again for this, but the end result is so simple, we can skip this.

at the end the coordinates of the midpoint of 2 points (x1, y1) and (x2, y2) are

((x1+x2)/2, (y1+y2)/2)

find the other endpoint (x2, y2), when you have one endpoint (x1, y1) and the midpoint (xm, ym) :

from above you know

xm = (x1+x2)/2

2×xm = x1 + x2

x2 = 2×xm - x1

and in the same way

ym = (y1+y2)/2

2×ym = y1 + y2

y2 = 2×ym - y1

and you can read a graph, right ?

if not it is high time to learn that very simple and basic skill :

the x coordinate of a point is how many units right (positive) or left (negative) from the center point it is.

the y coordinate of a point is how many units above (positive) or below (negative) from the center point it is.

the center point is always (0, 0).

so, what else do you need ?

I am very busy explaining things. I should not spend my little time doing the basic calculations for you (that I could train a monkey to do).

so, please, oil your brain machinery by following the instructions and formulas using the actual numbers and see how the results build out of this.

if you run into further problems, please ask me for additional explanations.

8 0
2 years ago
Simplify sin x / CSC x + cos x / sec x​
Artyom0805 [142]
  • sinx/cscx =sinx x sinx =sin^2x
  • cosx/secx=cosx x cosx=cos^2x
  • sin^2x+cos^2x=1 "trigonometric identity"
8 0
3 years ago
Students were surveyed about what summer camp they would be attending.
FinnZ [79.3K]

Answer:

5% with the information I'm provided with. I need more info

if that's wrong

Step-by-step explanation:

3 0
2 years ago
Free points and brainlist .help me with this
emmainna [20.7K]

Answer:

The better buy is the Grandma's Cookies

Step-by-step explanation:

<em>Grandma's Cookies</em>

30 divided by 14.75 = 2.033898305

<em>Sweet Treats</em>

25 divided by 10.75 = 2.325581395

Hope this helps! :D

6 0
3 years ago
Read 2 more answers
I really need help on geometry
balu736 [363]
For example, exc. 15.

x + y = 10 and 6/x = 9/y; You need y!

=> x = 10 -y and 9x = 6y => 9(10-y) = 6y => 90 - 9y = 6y => 15y = 90 => y = 6.
8 0
2 years ago
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