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olya-2409 [2.1K]
3 years ago
6

What number is equal to 2.8 - 4 ÷ 4? 02 03 O 14 O 15​

Mathematics
1 answer:
VARVARA [1.3K]3 years ago
8 0

Answer:

1.8

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

2.8 - 4 ÷ 4

<u>Step 2: Evaluate</u>

  1. Division:                                                                                                             2.8 - 1
  2. Subtraction:                                                                                                      1.8
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8 0
3 years ago
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Solve the following inequality. 5x-3 &gt; 7
bekas [8.4K]

Answer:

x > 2

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8 0
3 years ago
Given the function () = $
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<h3>The inverse of the function?</h3>

The function is given as:

f(x) = 1/3x^2 - 3x + 5

Next, we rewrite the function as in vertex form

Using a graphing calculator, the vertex form of the function f(x) = 1/3x^2 - 3x + 5 is

f(x) = 1/3(x - 9/2)^2 - 7/4

Express f(x) as y

y = 1/3(x - 9/2)^2 - 7/4


Swap x and y

x = 1/3(y - 9/2)^2 - 7/4

Add 7/4 to both sides

1/3(y - 9/2)^2 = x + 7/4

Multiply through  by 3

(y - 9/2)^2 = 3(x + 7/4)

Take the square root of both sides

y - 9/2 = √[3(x + 7/4)]

Add 9/2 to both sides

y = 9/2 + √[3(x + 7/4)]

Rewrite as an inverse function

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Calculate the number of terms using:

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This gives

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Divide by 13

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Add 1

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The sum is then calculated as:

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This gives

Sn =13/2 * (5 + 161)

Evaluate

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The nth term of a geometric sequence is

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Divide by ar^5

r^5 = 32

Take the fifth root

r = 2

Hence, the common ratio of the sequence is 2


Read more about sequence at:

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6 0
2 years ago
What is the value of x to the nearest tenth
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