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Gekata [30.6K]
3 years ago
9

Find the range of the data set: 7, 12, 15, 4, 23, 15, 25, 9

Mathematics
1 answer:
iVinArrow [24]3 years ago
4 0

Answer: Range = 21

Step-by-step explanation: you subtract the highest number by the lowest number in the set to find your range

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You are saving money for a new phone. You must have at least $800 saved up in
NeX [460]

Let number of hours needed to work = x

Multiply number of hours by rate: 15x

Add what you already have saved:

15x + 215

This needs to equal at least 800:

The equation becomes:

15x + 215 >= 800

Solve for x:

15x + 215 >= 800

Subtract 215 from both sides

15x >= 585

Divide both sides by 15

X >= 39

They have to work at least 39 hours.

6 0
3 years ago
Given the function f(x) = 3x + 1, what is the value of f(-2/3)? <br><br>show work <br>​
Marta_Voda [28]

Answer:

f(-2/3) = -1

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>Algebra I</u>

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = 3x + 1

f(-2/3) is x = -2/3

<u>Step 2: Evaluate</u>

  1. Substitute:                    f(-2/3) = 3(-2/3) + 1
  2. Multiply:                        f(-2/3) = -2 + 1
  3. Add:                              f(-2/3) = -1
7 0
3 years ago
Find the surface area of the pyramid shown to the nearest whole number.<br> 6ft 5ft 5ft
Tom [10]

Answer:75,

Step-by-step explanation:

1/2 bh= A for one T 5*5=25 25*6= 150

150/2=75

OR

5*5/2=12.5

12.5*6=75

4 0
2 years ago
What is the atomic number of the element represented by the diagrams
ratelena [41]

Answer:where is the diagram so i could help you

Step-by-step explanation:

4 0
3 years ago
What is an equivalent expression to 48x - 30?
mars1129 [50]
An equivalent expression would be 6(8x - 5)
3 0
3 years ago
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