Answer:
y=3 x= -5/2
Step-by-step explanation:
simultaneous equations
2x + 4y = 7 ------ eq 1
-2x + 3y = 14 --------eq2
(different signs add)
(eq 2 + eq 1)
-2x +(-2x) = 0
4y+3y = 7y
7+14 = 21
7y= 21
(divide both sides by 7)
y= 21/7= 3
2x + 4(3) = 7
2x+ 12=7
2x = 7-12
2x = -5
x= -5/2
ANSWER
Find out the how much does it grow in 8 weeks
To proof
As given
A coral reef grows 0.17 m every week.
now for the 8 weeks
coral reef grows in the 8 weeks = 8× 0.17
= 1.36 m
As
1 meter = 1000 millimeter
To convert growth of coral reef in the millimeter
= 1.36 × 1000
= 1360 millimeter
Hence 1360 millimeter be the coral reef grows in 8 weeks
4x+3=9x-4
-4x -4x
3=5x-4
+4 +4
5x=7
x= 7/5
Answer:
3.6cm
Step-by-step explanation:
YZ = 10² - 6² = 8
sinX = 8/10 = 53.13º
cos 53.13º = XN/6
XN = 3.6cm
Step-by-step explanation:
Vertex : (2,0)
root : is at 2 on the x axis
maximum is infinity
minimum is at the x axis
like so in the picture