$\frac{8 - x}{4 - x}$ = 3;
8 - x = 12 - 3x
2x = 4; x = 2
also
$\frac{10 -y}{4 - y}$ = 3;
10 - y = 12 - 3y
2y = 2; y = 1
Co-ordinate of the centre of enlargement is O(2, 1)
johnmulu answered the question on March 2, 2017 at 08:58
-
In order to complete a journey of 56 km, John walks for 1 hour at an average speed of V km/hr and then cycles for two hours at an average speed which is three times his walking speed. Calculate
(Solved)
In order to complete a journey of 56 km, John walks for 1 hour at an average speed of V km/hr and then cycles for two hours at an average speed which is three times his walking speed. Calculate:
a) V
b) The average speed in km/hr for the whole journey
Date posted:
March 2, 2017
.
Answers (1)
-
Write an expression in terms of x and y for the total value of a two digit number
(Solved)
(a) Write an expression in terms of x and y for the total value of a two digit number having x as the tens digit and y as the the units digit.
(b) The number in (a) above is such that three times the sum of its digits is less than the value of the number by 8. When the digits are reversed the value of the number increases by 9. Find the number.
Date posted:
January 24, 2017
.
Answers (1)
-
Three ladies Agnes, Betty and Cate contributed a total amount of sh 21,000 to start a saloon. The ratio of Agnes to Betty was 3:5 and that of Betty to Cate was 2:1.
(Solved)
Three ladies Agnes, Betty and Cate contributed a total amount of sh 21,000 to start a saloon. The ratio of Agnes to Betty was 3:5 and that of Betty to Cate was 2:1. How much did Betty contribute?
Date posted:
January 24, 2017
.
Answers (1)
-
The angle of elevation of the highest point of a building from two points S and T are 60o and 30o
(Solved)
The angle of elevation of the highest point of a building from two points S and T are 60o and 30o.T is vertically above S and ST = 10 m. Calculate the height of the building above the level S.
Date posted:
January 20, 2017
.
Answers (1)
-
Calculate the equation of a mirror line that reflects A(2, 7) onto A' (6, -1)
(Solved)
Calculate the equation of a mirror line that reflects A(2, 7) onto A' (6, -1)
Date posted:
January 16, 2017
.
Answers (1)
-
Given that sin(2x - 30)o = cos(3x - 50o), find the value of x
(Solved)
Find the value of x from the following:
sin(2x - 30)o = cos(3x - 50o)
Date posted:
January 16, 2017
.
Answers (1)
-
How long would five men working 4 hours a day take to dig a trench 45 m long?
(Solved)
Three men working for 8 hours a day take 6 days to dig a trench 9 m long. How long would five men working 4 hours a day take to dig a trench 45 m long?
Date posted:
January 6, 2017
.
Answers (1)