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3 years ago

Help me with this pls

Mathematics

2 answers:

astra-53 [7]3 years ago

7 0

14 + 7 * 54 / 6 - 7

Use PEMDAS

There are no parenthesis nor exponents so move on to multiplying and dividing work left to right!

14 + 7 * 54 / 6 - 7
14 + 378 / 6 - 7
14 + 63 - 7
77 - 7
70 is your answer

Oxana [17]3 years ago

5 0

Okay, this looks scary, but it's actually pretty easy. To help, we will use an acronym called PEMDAS, which will tell you how to use the order of operations.

Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Now, when it comes to multiplication and division, you do them in the order you see them. But, they always come before addition and subtraction, which follow the same rule.

Let's take a look at the problem now:
14+7×54÷6-7

There are no parentheses or exponents, so we don't have to worry about that. I see multiplication and division, though.

7×54 is first, the product is 378.

14+378÷6-7
There is a division problem now:
378÷6, the quotient is 63.

14+63-7

It looks much easier to solve now, doesn't it?

Add 14 and 63, the sum is 77.

77-7= 70

That's how you solve order of operations, message me if you need any more help with HW! :)

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The price of an item with a 15% discount would be 85% of the original price, so if the original price was x, the discounted price would be: $\frac{85x}{100}$

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3 years ago

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Answer:

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3 years ago

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3 years ago

Read 2 more answers

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3 0

3 years ago

Linda throws a dart that hits the square shown below: A square is drawn. A circle of radius 9 units touches the sides of the squ

nataly862011 [7]

Probability helps us to know the chances of an event occurring. The probability of Linda's dart hitting the circle is 0.7857.

<h3>What is Probability?</h3>

The probability helps us to know the chances of an event occurring.

$\rm{Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}$

As it is given that the circle touches the sides of the square. therefore, the length of the side of the square is the diameter of the circle.

Now, in order to calculate the probability that the dart hits a point in the circle we need to calculate the area of the circle and the area of the square.

Area of the circle with a given radius of 9 units,

$\text{Area of the circle} = \pi r^2$

$\rm = \pi \times (9^2)\\\\= 81\pi\ units^2$

Area of the square with sides equal to the diameter of the circle,

$\rm \text{Area of square} = side^2$

$\rm = Diameter ^2\\\\= (2 \times radius)^2\\\\= (2 \times 9)^2\\\\= 18^2\\\\= 324\ units^2$

Now, the probability that the dart hits a point in the circle can be written as,

$\rm Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}\\\\\\Probability=\dfrac{\text{Area of the circle}}{\text{Area of square}}\\\\\\Probability=\dfrac{81 \pi}{324} = 0.7857$

Hence, the probability of Linda's dart hitting the circle is 0.7857.

Learn more about Probability:

brainly.com/question/795909

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2 years ago