Answer: There are 30 questions.
Step-by-step explanation:Easiest way to approach this is to remember the percentage proportion equation. Part/Total= percentage/100.
27/x = 90/100
27/x=.90
x=27/.90
x=30
Therefore the exam has 30 questions.
10
Hope it’s right best luck with your studying
Answer:
The equation of a line that passes through the points(-4, 4) and (2, 12) will be:
Hence, option A is true.
Step-by-step explanation:
The slope-intercept form of the line equation
where
Given the points
Finding the slope between (-4, 4) and (2, 12)
Thus, the slope of the line m = 4/3
substituting (-4, 4) and m = 4/3 in the slope-intercept form of the line equation to determine the y-intercept b
y = mx+b
switch sides
Add 16 to both sides
Thus, the y-intercept b = 28/3
now substituting b = 28/3 and m = 4/3 in the slope-intercept form of the line equation
y = mx+b
y = 4/3x + 28/3
Therefore, the equation of a line that passes through the points(-4, 4) and (2, 12) will be:
Hence, option A is true.
Answer:
6/25
Step-by-step explanation:
Because england, scotland and france are european team and they make up 3/5 of all the teams, you multiply 3/5 by 2/5 because the south american teams are brazil and argentina which make up 2/5 of the total teams. So the probability that a european team will play a south american team is 3/5*2/5 which is 6/25
Answer:
(5, )
Step-by-step explanation:
Given the 2 equations
5x + 7y = 40 → (1)
3x - 7y = 0 → (2)
Adding the 2 equations term by term will eliminate the y- term
8x + 0 = 40
8x = 40 ( divide both sides by 8 )
x = 5
Substitute x = 5 into either of the 2 equations and solve for y
Substituting into (1)
5(5) + 7y = 40
25 + 7y = 40 ( subtract 25 from both sides )
7y = 15 ( divide both sides by 7 )
y =
solution is (5, )