The answer is D
2x - 3y = 6 multiply this by -3
3x - y = 2 Multiply this by 2
-6x + 9y = -18
6x - 2y = 4 Add the 2 equations:-
7y = -14 so y = -2
Substitute y = -2 in second equation:-
3x - (-2) = 2
3x = 2-2 = 0
x = 0
solution is (0,-2)
Answer: (B) 130 cm
Proof: If a chord and a line from the centre meet, they must be perpendicular. The line from the centre to the chord also bisects the chord. If the distance from the centre of the circle to the chord is 52 cm and the distance of half of the chord is 39 cm, then you can work out using Pythagoras' Theorem the distance of the radius.
r² = 52² + 39²
r² = 4225
r = 65
Thus, the diameter is 2r = 130 cm
Answer:
1725ft^2
Step-by-step explanation:
<em>I </em><em>have</em><em> </em><em>made</em><em> it</em><em> in</em><em> above</em><em> picture</em>
Answer:
3:4
Step-by-step explanation:
there are 3 sides on a triangle and 4 on a square
Answer:
The answer to your question is 32 rose and 8 tulip
Step-by-step explanation:
Data
rose/ 4 = tulip
total number of arrangements = 40
Rose arrangement = R = ?
Tulip arrangement = T = ?
Process
1.- Write equations to solve this problem
R/4 = T
R + T = 40
2.- Solve the system by substitution
R + R/4 = 40
(4R + R) / 4 = 40
4R + R = 4(40)
5R = 160
R = 160 / 5
R = 32
- Find T
32 + T = 40
T = 40 - 32
T = 8
3.- Conclusion
She made 32 rose arrangement and 8 tulip arrangements.