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3 years ago

How much is 3/4 of $2.99

Mathematics

2 answers:

denpristay [2]3 years ago

7 0

Answer: $2.24

Step-by-step explanation:

<h3 /><h3>CONCEPT TO KNOW</h3>

When you come across statements such as [a of b] is basically a×b

If you are still confusing, I can provide some numerical examples.

1/2 of 4=2 (1/2 × 4)
4/5 of 5=4 (4/5 × 5)

This also applies to your question.

-----------------------------------------------------------

<h3> SOLVE</h3>

a of b

=3/4 of 2.99

=3/4 × 2.99

=$2.24 (rounded)

vesna_86 [32]3 years ago

5 0

Answer:

2.24

Step-by-step explanation:

you multiply 3/4 by 2.99

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3 years ago

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Step-by-step explanation:

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3 years ago

Which number from the set {5, 10, 15, 18} makes the equation true?

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3 0

3 years ago

Read 2 more answers

Describe and correct the error in finding the tenth term of the arithmetic sequence 4, 12, 20, 28.

ycow [4]

Answer: The tenth term is 76

=======================================================

Explanation:

We use this arithmetic sequence formula to get the nth term

$a_n = a_1 + d(n-1)$

Plug in $a_1 = 4, \ d = 8, \ n = 10$ and you should get the following:

$a_n = a_1 + d(n-1)\\\\a_{10} = 4 + 8(10-1)\\\\a_{10} = 4 + 8(9)\\\\a_{10} = \textbf{76}\\\\$

The tenth term is <u>76</u>

---------

We can verify this by listing out the terms one by one. Start at 4, add on 8 each time, until you generate the 10th term. A table like the one shown below is a good way to keep track of all the terms.

$\begin{array}{c|c}\boldsymbol{n} & \boldsymbol{a_n}\\1 & 4\\2 & 12\\3 & 20\\4 & 28\\5 & 36\\6 & 44\\7 & 52\\8 & 60\\9 & 68\\10 & \textbf{76}\\\end{array}$

---------

In short, the error is with the "10" in the expression 4+10(8). The student should have used 9 instead. This is because of the n-1 term in $a_n = a_1 + d(n-1)$ which shifts everything one spot to the left.

7 0

2 years ago