X(2+7+9)=3.6
x(18)=3.6
x=3.6/18
x=0.2
2*0.2 : 7*0.2 : 9*0.2
0.4 : 1.4 : 1.8
0.4kg of nickel
1.4kg of zinc
1.8kg of copper
Hope this helps :)
(3x-12)(3x+2) gives
(x-4)(3x+2)
Answer:
117
Step-by-step explanation:
Okay, the problem is asking that we find the hypotenuse of this triangle (AKA, the lake.)
a²+b²=c²
A= 75
B= 90
C is always the hypotenuse.
75²+90²= c²
5,625+8,100= 13,725
√13,725= 117.15374513859981591194584103639
To the nearest whole number: 117
To the nearest tenth: 117.2
Hope this helps!