Answer:
Why is it not necessary to line up the decimal point to multiply?
- In addition and subtraction, it is important to line up the place value columns because we can only add or subtract digits in the same place value columns.
Step-by-step explanation:
Answer:
50+x
Step-by-step explanation:
if you simplify, 25*2 is 50.
50+x
Answer: false
Step-by-step explanation:
Surface Area Formula Surface Area Meaning
SA=2B+Ph Find the area of each face. Add up all areas.
SA=B+12sP Find the area of each face. Add up all areas.
SA=2B+2πrh Find the area of the base, times 2, then add the areas to the areas of the rectangle, which is the circumference times the height.
The the mean score (rounded to 2 DP) in the maths test across both classes is 63.67
What is the mean of scores?
The mean of scores is the sum of the scores for all students divided by the number of students
Class A:
mean score=39
mean score=sum of scores/number of students
39=sum of scores/11
sum of scores=39*11
sum of scores=429
Class B:
mean score=76
mean score=sum of scores/number of students
76=sum of scores/22
sum of scores=76*22
sum of scores=1672
overall mean score=(429+1672)/(11+22)
overall mean score= 63.67
Find out more about mean on:brainly.com/question/20118982
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