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Vinil7 [7]
3 years ago
5

What is the value of x in 0.8x = 7.2

Mathematics
2 answers:
Gelneren [198K]3 years ago
5 0

Answer:

9

Step-by-step explanation:

7.2 ÷ 0.8 = 9

x = 9

Ann [662]3 years ago
4 0

Answer:

x = 9

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

Step-by-step explanation:

<u>Step 1: Define equation</u>

0.8x = 7.2

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Divide both sides by 0.8:                    x = 9

<u>Step 3: Check</u>

<em>Plug in x to verify it's a solution.</em>

  1. Substitute:                    0.8(9) = 7.2
  2. Multiply:                        7.2 = 7.2

7.2 does indeed equal 7.2. ∴ x = 9 is a solution.

And we have our final answer!

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x=6.2

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What is the dimension of a rectangle if the perimeter is 198
AfilCa [17]

Answer:

Length = 49.5 unit and width = 49.5 unit

Step-by-step explanation:

Given as , Perimeter of rectangle = 198 unit

so ,as Perimeter of rectangle = 2× ( Length + width)

Or,                                   198 = 2 ×  (Length + width)

Or,                                   \frac{198}{2} = length + width

So, length + width = 99 unit

Now to make area maximum

Length × width = maximum

Or, (99 - width ) × width = maximum

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Now differentiate both side with respect to W

D(99W - W²)\frac{D(99w - w^2)}{Dw} = 0         as, constant diff is 0

So, 99 - 2w = 0

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3 0
3 years ago
Please help with this question
barxatty [35]

slope=<u>y</u><u>2</u><u> </u><u>-</u><u> </u><u>y</u><u>1</u>

x2 - x1

= <u>-</u><u>1</u><u> </u><u>-</u><u> </u><u>-</u><u>3</u>

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= <u>-</u><u>2</u>

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Use the drawing tool(s) to form the correct answer on the provided coordinate plane.
vlada-n [284]

Answer:

Step-by-step explanation:

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3 years ago
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