I need help with this question. Question in image.
Show working out to answer
2 answers:
Answer:
Step-by-step explanation:
38
20 (boys) the mean was 62% so times that by 20 it will give me 1240 marks.
After that do 30x70 so number of students times the 70% mean which gives 2100.
Now take the 2100 - 1240 = 860.
After that 860/10 = 86%
20 boys get 62 and 10 girls get 86 this all will equal to 2100.....2100/30 = 70
So the final answer is 86%
You might be interested in
It’s always gonna be 60 Units this is just an known fact
Answer:
Infinite solution
Step-by-step explanation:
if you use distribute property on 3(x-5), it will equal to 3x-15.
2 1/3 does not involve radicals. Did you perhaps mean 2^(1/3)? If so,
2^(1/3) = ∛2
Me don’t understand it i need more info
Answer:
19. y=5x+-1
20. y=-2.5x+4
Step-by-step explanation:
19: 9-4=5
-1+5=4 so m=5
b=-1
so y=5x+-1
20: -1-1.5=-2.5
4+-2.5=1.5
so m=-2.5
b=4
so y= -2.5x+4
Please mark me brainliest