Answer: 45
Step-by-step explanation:
60 minus 15 equals 45( there is 45 girls)
Answer:
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
The arc length of the semicircle is
- a+(a+1)+(a+2)+(a+3)+(a+4)=5a+10
As x = 42, this means a+4 is 42/180 of the arc length of the circle, 5a+10.
So,
- (42/180)(5a+10)=a+4
- 42(5a+10)=180(a+4) [multiply both sides by 180]
- 210a+420=180a+720 [distributive property]
- 30a+420=720 [subtract 180a from both sides]
- 30a=300 [subtract 420 from both sides]
- a=10 [divide both sides by 30]
Answer:
x=6
Step-by-step explanation:
4x-15=2x-3
+15 +15
4x=2x=12
/2 /2 +12
2x=12
/2 /2
x=6
You can get yourself a tutor or watch videos on the parts you dont understand! Sometimes it's just about how your learning it. It may not be being taught in a way you understand. That's how videos really help, since they are teaching it in a different style.
