Answer:
y=6
Step-by-step explanation:
y=3x x=2
y=3(2)
y=6
(1)
given = ( cross- multiply )
10j = 54 ( divide both sides by 10 )
j = = ← in simplest form
(9)
let h be the hours worked daily , then
3h = 20 = ( divide both sides by 3 )
h = ÷ 3
= × = = 6
She worked 6 hours each day
6x - 2 = x + 13
Subtract x
5x - 2 = 13
Add 2
5x = 15, x = 3
Solution: the number is 3
Answer:
17000 batteries
Step-by-step explanation:
Three years and one month is equivalent to the mean minus one standard deviation.
Three years and seven months is equivalent to the mean plus one standard deviation.
For a normal distribution, we know that 68% of population is between mean ± 1 sd, then can be expected that 25000*68% = 17000 of batteries last between three years and one month and three years and seven months
Answer: 1) If we talk about whole numbers then we should choose only square numbers that could be the area of square so that if we want to find its side so we a can find its square root i.e. side.
2) We can find the square root of the area of the given square to find the side length of the square.
3) No , it is not possible to find a side length that would be perfect for a square with an area of 45 square units because if we find its side we need to find its square root i.e.
................>which is irrational and √5=2.236
∴side=3×2.236=6.708 unit ......> which is not accurate we need to take approx value of it to get the side length of the square.