Answer:
Yes, your simultaneous equations are correct;
Solve them like so:
170 + 1.6449σ = 180 - 0.8416
2.4865σ = 10
σ = 4.0217...
μ = 170 + 1.6449(4.0217...)
μ = 176.615...
MS is correct, you must've made an error in solving or rearranging
Move the 4x over to the left side and get:
6x - 3 = 9
Then move the 3 over to the right....
6x = 12
Divide by 6
x = 2
Answer:
11.12
Step-by-step explanation:
4.12
+7
-----
11.12
7+4= 11
11 + .12 = 11.12
Answer:
The denominator of the simplified expression is 3 n - 2
Step-by-step explanation:
Given expression as :
(
) × (
)
or, 
Or, 
or, 
Or, 
Or, 
∴ 
Hence The denominator of the simplified expression is 3 n - 2 Answer
Answer:

Step-by-step explanation:
Rhombuses, parallelograms, rectangles, and squares cannot be classified as trapezoids as they have 2 pairs of parallel sides each. But quadrilaterals can be classified as trapezoids if they have a pair of parallel sides and a pair of non-parallel sides.