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Ray Of Light [21]
3 years ago
7

If 16x-2=30 what is the value of 8x-4?

Mathematics
2 answers:
s2008m [1.1K]3 years ago
5 0
12 is the value of 8x-4 when 16x-2=30
16x - 2 = 30
+ 2 +2
16x = 32 , x=2
Substitute :
8x - 4 = 8(2) - 4 = 16-4 = 12!
Dvinal [7]3 years ago
4 0

Answer:

12

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

Step-by-step explanation:

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

16x - 2 = 30

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

  1. Add 2 on both sides:                    16x = 32
  2. Divide 16 on both sides:               x = 2

<u>Step 3: Solve equation</u>

  1. Define:                    8x - 4
  2. Substitute:              8(2) - 4
  3. Multiply:                  16 - 4
  4. Subtract:                 12

And we have our final answer!

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7x^2 +2× when x = 3?
borishaifa [10]

Answer:

7(3^2) + 2(3).

That equals to 7(9) + 2(3).

That equals to 63 + 6.

That finally equals to 69.

Step-by-step explanation:


4 0
3 years ago
Read 2 more answers
17 please help me......................
Vaselesa [24]
I think its (6.5+3.25)÷0.2=48.75

dont quote me on that, I tried and I'm not the best at math lol.
(6.5 + 3.25) \div 0.2
8 0
3 years ago
would a boxplot of the data 113, 116, 116, 116, 118, 118, 119, 119, 122, 124, 124, 124 allow you to find the mean and the median
Allisa [31]
The answer is yes it would
6 0
4 years ago
Which are not the dimensions
Paul [167]
It would be B. 5cm 12cm and 13cm
4 0
2 years ago
bill is replacing his 15ft long by 12 ft wide deck. his new deck will add 5 feet to the length and 4 feet to the width. if a dra
Ira Lisetskai [31]

The dimensions i.e. length and width of the deck in the drawing is 8 and 6.4 inches respectively.

Given that the length of the previous deck = 15 feet

The width of the previous deck = 12 feet

Since the new deck will add 5 feet to the length and 4 feet to the width,

The length of the new deck = 15 + 5 = 20 feet

The width of the new deck = 12 + 4 = 16 feet

Also given that a drawing of the new deck uses a scale of 1 inch = 2.5 feet.

So, The length of the deck in the drawing = 20/2.5 inches = 8 inches

The width of the deck in the drawing = 16/2.5 inches = 6.4 inches

Therefore, the dimensions i.e. length and width of the deck in the drawing is 8 and 6.4 inches respectively.

Learn more about length here -

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