-1 = z/3 - 7
Emily's Work:
-1 = z/3 - 7
-1(3)=z/3(3)-7
-3 = z - 7
-3 -7 = z - 7
z = -10
Right away without having to start at the beginning, I see that she has made a mistake at the 4th-5th line of work.
Instead of adding 7 to both sides, she subtracts it and still leaves it in and doesn't fully finish the equation, as it would really be z-7 = -10
In order to solve it, follow these steps:
Rewrite the initial equation as follows:
x/3 - 7 = -1
Multiply both sides by 3
x/3(3)-7(3)=-1(3)
x - 21 = -3
Add 21 to both sides
x = 18
Answer: 33.5
Step-by-step explanation:
Well the 10,000 digit will be 1 and the thousand digit = 7 + 1 = 8
so the first 2 digits are 18
6 fewer than 8 = 2 so we get 182
1 fewer 10 than 1000's is 8-1 = 7 so we have 1827
and 5 fewer ones than 1000.s = 8 - 5 = 3
So our number is 18,273
Ratio of the sides of the similar triangles are equal ,
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HOPE IT HELPS
PLEASE MARK ME BRAINLIEST ☺️
Step-by-step explanation:
z = (specific score - mean) / standard deviation
in our case
z = (105 - 101)/4.2 = 4/4.2 = 0.952380952... ≈ 0.95
as z-tables usually round the z-scores to hundredths.
