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Ratling [72]
3 years ago
14

Todd has a new spook of wire like the one pictured. He needs 48 pieces of wire, each 22 feet long. He is estimates that he needs

50:20=1000 feet, and he concludes that 1 spool with 1000 feet will be enough
Mathematics
2 answers:
lilavasa [31]3 years ago
8 0

Answer:

true

Step-by-step explanation:

but where is pic

Degger [83]3 years ago
3 0

Answer: 1000 ft will not be enough.

Step-by-step explanation:

He needs 48 pieces of wire, and each piece of wire must be 22 feet long.

The math that he does is

50*20 instead of 48*22 because it may be easier to do:

But in the math of Todd, he adds two times the smallest number

50*20 = (48 + 2)(22 -2) = 48*22 + 2*22 - 2*48

where 48*22 is the exact number, and the other twos are the errors of the estimation, you can see that the amount that he underestimates (2*48) is bigger than the amount that he overestimates (2*22) so the result that he is obtaining in the multiplication 50*20 is smaller than the one that he actually needs, so 1000ft of cable will not be enough.

You also can do the multiplication: 48*22 = 1056 feet, wich is what he actually needs.

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Adding which of the following ordered pairs to the set [(0, 1), (2, 4), (3,5)) would make it not a function?
Kitty [74]

Answer:

(0,7)

Step-by-step explanation:

For a set of ordered pairs to be a function, there needs to be "ONE" value of y for each unique x value.

Thus, we see that the 3 ordered pairs given have x values of 0, 2, and 3.

Now, we look in the answer choices and find which ones are 0, 2, or 3 in x-coordinate.

That would be only (0,7). Now the original set has x = 0 corresponding to y = 1

Is that true for (0,7)?? NO!

x = 0 will now correspond to "TWO" values of y.

THis will make this NOT A FUNCTION.

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uranmaximum [27]
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8 0
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In hopes of encouraging healthier snacks at school, Zack brought in a tray of carrot sticks and apple slices to share. The tray
Alex787 [66]

Answer:

48% were carrot sticks.

52% were apple slices.

Step-by-step explanation:

Given that:

Total number of snacks in the tray = 25

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Hence,

48% were carrot sticks.

52% were apple slices.

6 0
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andrew-mc [135]

Answer: 7

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