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2 years ago

Mr. Li has 16 pencils. He gives 9 pencils top some students. How many pencils does Mr. Li have now?

Mathematics

2 answers:

PIT_PIT [208]2 years ago

5 0

16 - 9 = 7
7 pencils.

Whitepunk [10]2 years ago

5 0

7 pencils

16 - 9 = 7

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Answer:

There are 6 coins in nickels and 9 coins in quarters.

Step-by-step explanation:

Now, to find the solution.

According to question:

The number of nickels = $x$ .

The number of quarters = $y.$

So, the total number of coins:

$x+y=15.$

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Thus,

$y=x+3$ .....(1)

Now, to get the solution:

$x+y=15$

Substituting the equation (1):

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Subtracting both sides by 3 we get:

$2x=12$

Dividing both sides by 2 we get:

$x=6.$

The number of nickels = 6.

Now, substituting the value of $x$ in equation (1):

$y=x+3\\\\y=6+3\\\\y=9.$

The number of quarters = 9.

Thus, there are 6 coins in nickels and 9 coins in quarters.

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2 years ago

1=10^0 into logarithmic form

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Answer:

$0 = log_{10} 1$

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Part B:

The price of the tv when purchased at the superstore is given by:

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