12 purple pens = 4 parts
1 part = 12/4 = 3
4 parts purple + 1 part blue = 5 parts
3 x 5 = 15
Answer:Step-by-step explanation:
All. They all add up to 40.
Answer:
Let n and n+4 be the numbers. Then:
n² + 3(n+4)=66
n²+3n-54=0
(n+9)(n-6)=0
n=6 or -9
n+4=10
Assuming positive integers only, the numbers are 6 and 10…..
Step-by-step explanation:
100% right
-8y is the answer.
-9y+y=-8y
2-1+6-7=0
<span>_award brainliest if helped!!
</span>Difference in speed = 47+35 = 82km/h
(They are going in opposite directions)
So they are drifting apart at rate of 82km/h
Time taken to be 50km apart = 50/82 = 0.6<span> h</span>
