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samantha636
13.10.2019 •
Mathematics
1. who is correct?
what is the rate
of change shown in
the table below?
x y
3 13.5
6 27
8 36
11 49.5
• dylan says the rate of
change is 4.5.
• rachel says the rate of
change is 13.5.
who is correct, and why?
Solved
Show answers
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Ответ:
slope = (27 - 13.5) / (6 - 3) = 13.5 / 3 = 4.5
so Dylan is correct...Rachel forgot to divide by 3
Ответ:
Each pizza must be divided into 6 parts. TRUE
Mario can feed 12 friends with 4 pizzas. TRUE
Step-by-step explanation:
Total number of pizzas Mario has = 4
Now the fraction of pizza eaten by 1 friend = 2/6 = 1/3
⇒ 1 friend eats
of pizza.
So, the fraction if pizza eaten by his 3 friends = 3 x Fraction his 1 friend eats)
Hence, his 3 friends eats 1 complete pizza.
Now, he has a total of 4 pizzas.
So, the number of friends to finish 4 pizza
= 4 x ( Number of people to finish 1 pizza) = 4 x 2 = 12 friends
Hence, his 12 friends eat 4 complete pizza.
Now, the given statements are:
Each pizza must be divided into 4 parts.
False as 3 is NOT divisible by 4
Each pizza must be divided into 6 parts. TRUE
Mario can feed 12 friends with 4 pizzas. TRUE
Mario can feed 24 friends with 4 pizzas. FALSE