Answer:
Step-by-step explanation:
Let
x ----> the length of Zach's car
y ----> the length of Ginny's car
we know that
The sum of the lengths of both cars is 30 inches
so
----> equation A
Ginny's car is 2 more than 3 times the length of Zach's car
so
----> equation B
substitute equation B in equation A
Answer:<em> 10 miles</em>
Step-by-step explanation:
<em>Mile 1: 3.00</em>
<em>Mile 2: 3.50</em>
<em>Mile 3: 4.00</em>
<em>Mile 4: 4.50</em>
<em>Mile 5: 5.00</em>
<em>Mile 6: 5.50</em>
<em>Mile 7: 6.00</em>
<em>Mile 8: 6.50</em>
<em>Mile 9: 7.00</em>
<em>Mile 10: 7.50</em>
3,5 is the answer i belive
Boys:girls = 4/5
boys = 4/(4+5) = 4/9 of the class
