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3 years ago

Simplify 8- 2 (6 - 4 : (9 —7)]

Mathematics

2 answers:

Phantasy [73]3 years ago

4 0

8-2(6-4:2)
8-2(6-2)
8-2*4
8-8=0

Reil [10]3 years ago

3 0

For this case we have that according to the method of algebraic resolution PEMDAS the following order is fulfilled:

P: Parenthesis

E: Exponents

MD: Multiplication and division (From right to left)

AS: Addition and subtraction (From right to left)

So, if we have the following expression:

$8-2 [6-4: (9-7)] =\\8-2 [6-4: 2] =\\8-2 [6-2] =\\8-2 [4] =\\8-8 =\\0$

Answer:

$8-2 [6-4: (9-7)] = 0$

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Explain what the equation 110d = 100d + 40 represents<br>in the context of the example problem.

Tanya [424]

<em>This means that at some specific number of days the cost for Oceanview and Beachside will be the same.</em>

<h2 /><h2>Explanation:</h2>

See the complete question in the attached file. In this exercise, we know that Oceanview charges $100 per day plus a one-time fee of $40. This can be represented by the following equation:

Total cost for Oceanview:

$c=100d+40$

Total cost for Beachside:

$c=110d$

Where:

$c:Represents \ the \ cost \\ \\ d:Represents \ the \ number \ of \ day$

So we have to explain what the equation:

$110d=100d+40$

represents in the context of the problem. We have used substitution in order to get that equation, so <em>this means that at some specific number of days the cost for Oceanview and Beachside will be the same.</em>

This value was calculated and we get that<em> the cost at the hotels will be the same after 4 days and it will be $440.</em>

<h2>Learn more:</h2>

Linear equations: brainly.com/question/12412678

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2 years ago

1400 dollars is placed in an account with an annual interest rate of 5.5%. to the nearest year, how long will it take for the ac

olga_2 [115]

It will take 19 years and 6 months for the account value to reach 2900 dollars

Step-by-step explanation:

Given

Principal amount = 1400 dollars

Rate = 5.5 %

Final value = A = 2900

We have to find t

So,

The formula for simple interest is:

$A = P(1+rt)$

Putting values

$2900 = 1400(1+0.055.t)\\\frac{2900}[1400} = 1+0.055t\\2.071 = 1+0.055t\\2.071-1=0.055t\\1.071 =0.055t$

Dividing both sides by 0.055

$\frac{0.055t}{0.055} = \frac{1.071}{0.055}\\t = 19.47\ years$

Rounding off to nearest tenth

19.5 years

Hence,

It will take 19 years and 6 months for the account value to reach 2900 dollars

Keywords: Interest, simple interest

Learn more about interest at:

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3 years ago

Nine and one-half less than four and one-half times a number is greater than 62.5. Which of the following represents the solutio

kolbaska11 [484]

4.5x - 9.5 > 62.5
4.5x > 62.5 + 9.5
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x > 72/4.5
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3 years ago

Read 2 more answers

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3 years ago

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3 years ago