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Jace wants to ride his bicycle 21.4 miles this week. He has already ridden 7 miles. If he rides for 4 more days, write and solve an equation which can be used to determine xx, the average number of miles he would have to ride each day to meet his goal.

Sagot :

Answer:

3.6 miles

Step-by-step explanation:

Set up an equation. Start with the total goal of 21.4 on one side, then think about what goes on the other. He's already ridden 7 miles, and this is going to be the same as the 21.4, so start with a 7. Then, in addition to those 7, he'll need to ride some amount on average for 4 more days, so that would be + 4x. This equation its 21.4 = 7 + 4x, and now just solve for x.

21.4 = 7 + 4x

14.4 = 4x

3.6 = x

Don't forget your units! (: Also, let me know if any part of this needs a more in-depth explanation.