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GuDViN [60]
3 years ago
6

Using Order of Operations (PEMDAS), solve the following two expressions. Show all steps.

Mathematics
2 answers:
aksik [14]3 years ago
8 0

Answer:

A:

Multiple: 3 * 5 = 15

Add: 7 + the result of step No. 1 = 7 + 15 = 22

Divide: 4 / 2 = 2

Subtract: the result of step No. 2 - the result of step No. 3 = 22 - 2 = 20

Add: the result of step No. 4 + 3 = 20 + 3 = 23

B:

Add: 7 + 3 = 10

Multiple: the result of step No. 1 * 5 = 10 * 5 = 50

Divide: 4 / 2 = 2

Subtract: the result of step No. 2 - the result of step No. 3 = 50 - 2 = 48

Add: the result of step No. 4 + 3 = 48 + 3 = 51

mart [117]3 years ago
4 0

9514 1404 393

Answer:

  a) 23

  b) 26

Step-by-step explanation:

a) Perform the multiplication and division first, then the addition.

  7 + 3·5 -4÷2 +3

  = 7 +15 -2 +3

  = 23

__

b) Evaluate parentheses first, then the rest of it. The multiplication and division are done before the addition at the same level.

  ((7 +3)·5 -4)÷2 +3

  = (10·5 -4)÷2 +3

  = (50 -4)÷2 +3

  = 46÷2 +3

  = 23 +3

  = 26

_____

<em>Additional comment</em>

An appropriate calculator can evaluate these for you. The Go.ogle calculator reliably follows the order of operations. You can use an asterisk (*) for multiplication with that calculator.

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tankabanditka [31]

Answer:

C

Step-by-step explanation:

Given

x³ + 3x² + 3x + 9 ( factor first/second and third/fourth terms )

= x²(x + 3) + 3(x + 3) ← factor out (x + 3) from each term

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5 0
4 years ago
The weight distribution of a vehicle specifies that the front wheels carry 55% of the weight. If a certain vehicle weighs 3890 l
mario62 [17]

Answer:

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Step-by-step explanation:

A certain vehicle weighs 3,890 lbs.

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Then,

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\dfrac{3,890}{x}=\dfrac{100}{55}

Cross multiply:

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3 years ago
You can peel 4 potatoes in 10 minutes. How long will it take you to peel 14 potatoes?
Grace [21]

It would take you 35 minutes.

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I hope this helps!

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Answer:

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