Question

HELP WITH SOME MATH QUESTIONS PLEASE! #1

Answer 1

@iGreen @hartnn

Answer 2

hi @Pamela16 ,first Question :-
you have 38 unit of squares as area;

Answer 3

hmm thats not a choice for question 1

Answer 4

you divide each region with 38 ;
for example :-
probability of getting point inside region A = 6/38 = 3/19
probability of geting point inside region C = 14/38

Answer 5

then you will get the right answer is option B

Answer 6

12/38= 6/19

Answer 7

aha i understand

Answer 8

can you please help me with the rest? @borak

Answer 9

the question 2 :-
to calculate the probability of the being to left o circle d ( the area that are left to the circle ).
you must to calculate this area and divide it' with the rectangle area;

Answer 10

let's give the area left of circle name M;
the diameter as you see is 0.8 km; then the radius is 0.4km
the area of circle is r^2*pi = 0.4^2* pi = 0.5026 km^2

Answer 11

let's take the first 1km of the rectangle (from the left) , this in the picture you can see this;

Answer 12

the 1 km from the left include the M area + half of the circle :D
and on the other hand the area equal to 1 *0,8 = 0.8 ( because it's rectangle )
the whole area = 0.8
to find M we have to => whole area - half of the circle = M

Answer 13

M = 0.8 -( 0.502/2) // we need half of it
the big rectangle = 2.4*8
the probability of M area ( the left of circle) = M/big rectangle
= (0.8 - 0.502/2)/(2.4*8) = 0.2875
if rounding to nearest tenth you will get 0.29 as answer

Answer 14

Question 3 :-
region 1 represent a trapezoid
region 2 rectangle
region 3 triangle

Answer 15

calcualte all the areas , divide area of region 2 / area of all of them

Answer 16

Area of region 1= 6 cm^2
Area of region 2 = 8 cm^2
Area of region 3 = 4*4/2 = 8
what the probabilty of the region 2 =
region 2 / (region 2+ region 1 + region 3) = 8/(22) = 4/11