Question

Please Help

Answer 1

i think its a but im not sure..

Answer 2

@adajiamcneal Your answer is well :)

Answer 3

I think it's 10 but I am a bit unsure...

Answer 4

ok thank you :) i have a couple more ..

Answer 5

K let me know :)

Answer 6

@Omar_Elboredy

Answer 7

So let's take it easily and step-by-step , you have 2 polygons of the same shape and U want to compare them ... Then the easy step is to use ratio!
\[\frac{ 12 }{ 40 } = \frac{ 3 }{ x }\]

Then nw you have to get x in one side and othe stuff on the other side like that

\[\frac{ x }{ 3 } = \frac{ 40 }{ 12 } \]


Multiplying both sides by 3 : \[x = \frac{ 40 }{ 4 } = ?\]

Let me know if you got it :)

Answer 8

B ?

Answer 9

aha (y)

Answer 10

because 40/4 = 10 lol

Answer 11

:)

Answer 12

c?

Answer 13

@Omar_Elboredy

Answer 14

1 cm = 10 ft.
then 4.7 cm = ?

By criss-cross : ? = 4.7 * 10 = 47 ft :)

Which will be "D" :)

Answer 15

b? @Omar_Elboredy

Answer 16

To find length of hypotenuse use Pythagorean theorem .

Applying this to given prob. you will get : \[\sqrt{17^2 + 17^2} = 17\sqrt{2}\]

Which will be C

Answer 17

@Omar_Elboredy idk how to do this one.. i typed it in the calculator and i dont get any of the options.

Answer 18

Could U plz show me wat U typed ! :D

Answer 19

lol i have a scientific calculator i typed in 7 and hit tan-1 haha

Answer 20

So wat U got out ?

Answer 21

0.122784561 lol

Answer 22

O.o
See. .. First be sure that you are in the deg. mode and then type in sth like this : \[\tan^{-1} 7\]

and then hit equal sign then let me know wat U get :)

Answer 23

it is in the degree mode and i still get the same thing

Answer 24

U hit tan(7) ! :D

Answer 25

U have to hit this : shift button then tan button u will get tan-1 shown on the screen :D
then type 7 and show me wat U get

Answer 26

ohhhhhhh its c lol i feel dumb -.-

Answer 27

:D

Answer 28

ok if i need more ill tagg you in a different question :) thank you

Answer 29

If U wanna pm me it's ok :)

Answer 30

@ayyookyndall

Answer 31

K let me see wat's next :D

Answer 32

mmmmm I couldn't figure out what's wrong with that question .. I think it's 40 cm^2 but the answer is not shown ! :D

Answer 33

Aha I got the trick :D

You have to calculate the missing portion of the base which will be 8 &
\[\frac{ 4 }{ \sin(45) } = 4\sqrt{2}\]

Then apply the rule you will get sth near "C" :)

Answer 34

For reflection about the y-axis you have think about it like you a mirror on the y-axis which means that the y-coordinates for each point will be the same the only change will be with the sign of x-coordinates for each point
So wat will be the answer ? :)

Answer 35

D?

Answer 36

By this you changed the sign of both x-coordinates and y-coordinates ... And we only want to change the sign of x's

Answer 37

Its C, correct?

Answer 38

Yes :)

Answer 39

Take this as a rule :
If you wanna reflect about x-axis just change the sign of y-coordinates only
If you wanna reflect about y-axis just change the sign of x-coordinates only
If you wanna reflect about the origin just think you do this in two steps .. one about x-axis and the other is about the y-axis :)

Answer 40

This includes two separate types of data : Angle and length(magnitude)
The angle is calculated like this :
you know from trig rules that SOH CAH TOA >> \[\sin(x) = \frac{ Opposite }{ Hypotenuse } , \cos(x) = \frac{ Adjacent }{ Hypotenuse } , \tan(x) = \frac{ Opposite }{ Adjacent }\]

Then you nw have wat for x ?
Opposite which is -12 and Adjacent which is - 26 , then use which rule ?

We use tan , the this will be sth like this : \[\tan(x) = \frac{ -12 }{ -26 }\]

and to get x we have to do tan-1 ! :D then x will bet : \[x = \tan^{-1} (\frac{ -12 }{ -26 } = 24.775\]

which is nearly 25 deg

the nw for the direction : its west south (y)

Now wat ? :D
It's magnitude

Answer 41

So let's calculate magnitude , as you know this is a right-angled triangle , so to get the length of hypotenuse we use the Pythagorean theory which is :
\[a^2 = b^2 + c^2\]

we here have b and c

so to get a we apply the rule and we simply get \[a^2 = 820\]

to get a we take the square root for both sides in which we will get \[a = 29\]

so the answer will be ?
Let me know wat you figured out :D

Answer 42

D

Answer 43

What is the value of angle (x) ?

Answer 44

24.775

Answer 45

which is 25 ok :D
Then by this we exclude D and B , now what is the direction ?

Answer 46

west south

Answer 47

oh so its a?

Answer 48

Exactly ! :D

Answer 49

ok im done :) kyndall might need help though so can you please help her ?

Answer 50

K no prob. feel free to ask me anytime :)