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3 years ago

Use the model to show why 522 is divisible by 9.

Mathematics

1 answer:

noname [10]3 years ago

6 0

Answer:

If the sum of the digits is divisible by 9, then 522 is divisible by 9. If the sum of the digits is not divisible by 9, then 522 is not divisible by 9. 9 is divisible by 9, Therefore, 522 is divisible by 9 and the answer to the question, "Is 522 Divisible By 9?" is Yes.

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(5h-4)-(h-5) combining like terms

murzikaleks [220]

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4 years ago

One minute after take off, an airplane altitude was 4,000 feet. Three minutes later , it was 20,000 feet what was the planes ave

Temka [501]

Answer:

The average altitude change of plane with time is 8,000 feet per min .

Step-by-step explanation:

Given as :

The initial height of plane after 1 min take off = 4,000 feet

The final height of plane after 3 min later = 20,000 feet

Let The rate of change of altitude in feet per min = s feet per min

Now, According to question

The change in altitude = final altitude - initial altitude

Or, D = 20,000 feet - 4,000 feet

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I.e Time change = 2 min

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So, s = $\frac{16,000}{2}$ feet per min

∴ s = 8,000 feet per min

So, Rate of change of altitude with respect to time = s = 8,000 feet per min

Hence The average altitude change of plane with time is 8,000 feet per min . Answer

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3 years ago

Use the model to show why 522 is divisible by 9.​

Use the model to show why 522 is divisible by 9.