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3 years ago

What is the first operation to use to simplify the expression 3,500/ (34+8x2) -4

Mathematics

1 answer:

Orlov [11]3 years ago

6 0

An:
Parentheses- multiply 8 and 2 then add 34.

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What number is 24% of 80

never [62]

19.2 is 24% of 80

Change the percentage to a decimal by dividing over 100:
$\frac{24}{100} = 0.24$

Multiply 0.24 by 80:
$0.24 \times 80 = 19.2$

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4 years ago

Find the mean of 65, 67, 69, 67, 63, 60,60

DIA [1.3K]

Answer:

64.428

Step-by-step explanation:

well to find the mean we add all of the numbers up and then divide it by the amount of numbers in the sequence

so if we add all of the numbers up it will give us

451

then if we divide that by the number of numbers in the sequence which is 7 then that will leave us with

around 65 or exactly it would be

64.428

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3 years ago

X-1 / x-1 = 1<br> What is x?

lions [1.4K]

Answer:

$\large\boxed{x\in\mathbb{R}-\{1\}}\to\text{any real number except 1}$

Step-by-step explanation:

$\dfrac{x-1}{x-1}=1\\\\\text{Domain:}\ x-1\neq0\qquad\text{add 1 to both sides}\\\\x\neq1\\\\\text{We know:}\ \dfrac{a}{a}=1\ \text{for any real number except 0}.\\\\\text{Therefore}\ x\ \text{is any real number except 1}.$

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3 years ago

Justin's planning to purchase 1 book for $20 each month for 1 year .How much money will he spend on books in that year?

andre [41]

12 months in a year.
$20 a month.

20*12=240

He'd spend 240 dollars.

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4 years ago

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