You can model geometry for making buildings and sky scrapers, also stores.
(x,y) to (x,-y). As the triangle is reflected across the x axis, the x value stays the same. Being reflected, the y value is reversed (from negative to positive because the shape is going from below to above)
Hope that made sense
Boys : Girls = 2:7
let the no. of boys be x
so no of girls = 250+x
so, x:(250+x) = 2:7
x/(250+x) = 2/7
7x = 500+2x
7x-2x = 500
x = 500/5 =100
Answer: The difference between the given expressions would be
Step-by-step explanation:Step-by-step explanation:
Given phrase,
Difference between x+5 and 2x+3,
( By distributive property )
( By combining like terms )
Hence, the required difference would be
Answer:
c) 95% of all random samples of customers will show that 82% to 94% oders arrive on time
Step-by-step explanation:
From problem statement we take 88 as a mean of a normal distribution, in that case we know, about relation between mean and standard deviation
μ ± σ ⇒ [ μ - σ ; μ + σ ] ⇒ [ 88 - 6 ; 88 + 6 ] ⇒ [ 82 ; 94 ]
The above mentioned interval get 95.7 % of all values for a normal distribution, so we must be sure that a 95 % of all random samples of customers will show that 82% to 94% of orders arrive on time
