Answer:
Answer is 5
Step-by-step explanation:
x+2x+3x=30
6x=30
x=5
Answer:
x = 6/3y+1
Step-by-step explanation:
x+3xy=6
Step 1: Factor out variable x.
x(3y+1)=6
Step 2: Divide both sides by 3y+1.
x(3y+1) / 3y+1
so x = 6/3y+1
Answer: $135
Explanation: To find how much 15 pizzas will cost, first we have to find out how much just one pizza will cost. To do this, you have to divide both the number of pizzas (8) and also the price for those 8 pizzas ($72) by the number of pizzas (8 again). When you do this you get the price of one pizza. Then you multiply the price of one pizza by the amount of pizzas you actually need to find the value for (15). This is a lot to explain but don't lose hope! Let me show you step by step and it'll make more sense.
Step 1) Divide both the amount of pizzas and the cost of that many pizzas
8 ÷ 8 = 1
72 ÷ 8 = 9
This means that one pizza costs 9 dollars.
Step 2) Multiply the cost of one pizza by 15 (the amt of pizzas you need to find the cost for)
15 × 9 = 135
135 is the cost for 15 pizzas. I hope this helps you!
Okay so this is how I would do it but you can do it a different way
160/2 = 80 (2 b/c I want a whole # and 2 is a factor of 6 & 20)
so 80 degree in 2 seconds
so then 80 *10=800 (10 b/c 20/2=10)
but since there's only 360 degrees in a full circle
800/360=2.22
so we go back to 80 *2.22=177.6 degrees
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v.s. 160 n
---- * --- (20 *160=3200/6=533.33
6 20
You can go w/ whatever answer you think is right b/c frankly I don't know but if I were you I would go with the second one because it seems more right and there's actually a method to the madness.
