Okay this one is pretty easy.
Here are the steps:
1. we know that 70 - 79 = 5 students 80 - 89 = 7 students 90 - 99 = 2 students.
2. ADD
3. 5 + 7 + 2= 14
4. ANSWER
A: D there are 14 students scored 70 and above!
Hope this helped! (tell me if i'm wrong or right please!!!)
Answer:
13.5
Step-by-step explanation:
30% of 45= 13.5
brainlest please?
Answer: 60,10
Step-by-step explanation: hope this helps
Answer:
440
Step-by-step explanation:
Her we have two objects: 2 square.
1st has dimension 5x5x8
2nd has dimension 10x10x2
But we also have invisible prarts, the bottom of 1st is on the top od the 2nd. So we will remove something.
The formula for the surface of the square is
S=2B+M
Surface area of the first is
S1=2x5x5+4x8x5=50+160=210
Surface are of the 2nd is
S2=2x10x10+4x10x2=200+80=280
S=s1+s2-50=210+280-50=440
This -50 is are od one base from first square 5x5=25 whic we added in s1, but in real it is invisible.
The same area we added in s2. The top is 10x10-5x5 (invisible prat).
So we added two times 25, it is 50.
