So 3/5 of boys had rockets
2/9 of (boys that had rockets) had streamers
3/5=boys that had rockets
subsitue
2/9 of 3/5
'of' means multiply
2/9 times 3/5
remember that a/b times c/d=(ac)/(bd) so
2/9 times 3/5=(2 times 3)/(9 times 5)=6/45=2/15
so 2/15 of the boys had streamers
Answer:
15
Step-by-step explanation:
(-2,3)-x1,y1
6,r -x2,y2
slope(m)=3/2
m= y2-y1/x2-x1
3/2= r-3/8
r=15
Answer:
Every week, the radioactivity decreases by a factor of 5
After 1 week, it goes from 5,000 to 1,000
2 weeks 1,000 / 5 =200
3 weeks 200 / 5 = 40
4 weeks 40 / 5 = 8
5 weeks 8 / 5 = 1.6
6 weeks 1.6 / 5 = 0.064
7 weeks 0.064 / 5 = 0.0128
8 weeks .0128 / 5 = 0.00256
9 weeks 0.00256 / 5 = 0.000512
10 weeks 0.000512 / 5 = 0.0001024
Step-by-step explanation:
X+7=28
x=28-7
x=21 is the answer
Answer:
x<-9
Step-by-step explanation:
x−1<−10
Add 1 to both sides.
x<−10+1
Add −10 and 1 to get −9.
x<−9
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Hoped this helped :)