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rosijanka [135]
2 years ago
9

Simplify: |7 – 9| + (7 – 9)^2​

Mathematics
1 answer:
pogonyaev2 years ago
4 0

Answer:

6

Step-by-step explanation:

Following PEMDAS ( parentheses, exponents, multiplication, division, addition, subtraction)

| 7 - 9 | + ( 7 - 9 ) ^ 2

| 7 - 9 | + -2 ^ 2

| 7 - 9 | + ( -2 x -2 )

| 7 - 9 | + 4

| -2 | + 4

2 + 4

6

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You need to mutiply 6 by 20, then you need to devide what you got by 2.

looks like this. length times hight, devided by 2.

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a fishing boat accidentally spills 15 barrels of diesel oil into the ocean. each barrel contains 42 gallons. if the oil film on
bezimeni [28]

The square meters of the area the oil slick will cover is 9.6 × 10⁶ m².

<h3>What is meant by volume?</h3>

Volume is defined as the amount of three-dimensional space enclosed by a closed surface.

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Now, as per the given question;

First, we determine the entire volume of oil in gallons by multiplying the volume per barrel even by total number of barrels:

15×42 gal = 630 gal

This volume must be converted to square meters:

V = 630 gal × (0.00379 m³/ gal

V = 2.4 m³

The thickness (height) of a oil film in meters is required:

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h = 2.5 × 10⁻⁷m

The surface area of a oil film is calculated by dividing the oil volume by height of the oil film.

A  = V/h

A  = 2.4 m³/2.5 × 10⁻⁷m

A = 9.6 × 10⁶ m²

Therefore, the area of the oil slick cover is found to be 9.6 × 10⁶ m².

To know more about the volume, here

brainly.com/question/463363

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1 year ago
Casey has a job doing valet parking. Casey makes an hourly rate of $4.55 per hour plus tips. Last week Casey worked 26 hours and
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Answer:

D

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Answer:

91/4(w+21/2)=108 3/4

Step-by-step explanation:

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