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3 years ago

Evaluate. 21 ÷ 7 + 20 • 102 • 2 – 3

Mathematics

1 answer:

Novay_Z [31]3 years ago

8 0

To avoid confusion, remember PEMDAS. This is the order of operation.

Parenthesis, Exponents, Multiply, Divide, Add, Subtract

21 ÷ 7 + 20 * 102 * 2 - 3

No parenthesis and no exponents, proceed to multiplication.

20 * 102 * 2 = 4,080

Then, perform division

21÷7 = 3

Then, do addition

3 + 4080 = 4083

Lastly, do subtraction

4,083 - 3 = 4,080

So, 21 ÷ 7 + 20 * 102 * 2 - 3 = 4,080

THEREFORE THE ANSWER IS 4,080

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aleksley [76]

Answer:

<u>The original price of the laptop was US$ 875</u>

Step-by-step explanation:

1. Let's review all the information given for solving this question:

Sale price of the laptop = US$ 525

Discount from the original price = 40%

2. Let's find the original price of the laptop

Original price of the laptop = x

Sale price of the laptop = US$ 525

Sale price of the laptop = x - 40%x

525 = x - 0.4x

525 = x - 4x/10 (0.4 = 4/10)

5,250 = 10x -4x (Multiplying by 10 at both sides)

5,250 = 6x

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<u>The original price of the laptop was US$ 875</u>

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3 years ago

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Shtirlitz [24]

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What is the midpoint coordinates of segment HX H(13,8) X(-6,-6)

Setler79 [48]

Midpoint of (x1,y1) and (x2,y2) is

$(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})$

so the midpoint of HX is the mdpoint of (13,8) and (-6,-6)
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4 years ago

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Paladinen [302]

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3 years ago

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Aleksandr [31]

Answer:

list no shows by three cube={1,1,1}

Step-by-step explanation:

three cubes rolled at same time

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list no shows by three cube={1,1,1} answer

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