Ske d

36. There are 40 students in the Travel Club. They discovered that

17 members have visited Mexico, 28 have visited Canada, 10

have been to England. 12 have visited both Mexico and

Canada, 3 have been only to England, and 4 have been only to

Mexico. Some club members have not been to any of the three

foreign countries, and, curiously, an equal number have been

to all three countries.

ion

f

S-

(a) How many students have been to all three countries?

(b) How many students have been only to Canada?

45.3592

step-by-step explanation:

idk

step-by-step explanation: i just don't

5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form