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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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12345 [234]

Answer:

1/216

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The sum of two consecutive integers is -95. Find the integers. State the unknov-
kvasek [131]

Let the unknown consecutive integers be x, x+1

x+x+1=-95

2x+1=-95

2x=-95-1

2x=-96

x=-96/2

x=-48

x=-48

x=-48x+1=-48+1=-47

-48 and -47 are the two consecutive integers

Please mark as Brainliest

8 0
3 years ago
PLEASE HELP! PLEASE!!!!!!!
Sloan [31]

Using the equation of the proportional relationship:

Average rate of speed = 60

Time taken to go 300 miles = 5 hrs

Distance travelled in 2.5 hrs = 150 miles

<h3>What is a Equation of a Proportional Relationship?</h3>

A equation of a proportional relationship models the relationship between two variables, x and y, that has a constant of k. It is expressed as y = kx.

Given the following:

Equation: d = 60t

d = distance in miles

t = time in hours

Average rate of speed for the bus = k = 60

Time (t) it would take to go 300 miles (d):

300 = 60(t)

300/60 = t

t = 5 hours

Distance (d) it would travel in 2.5 hours (t):

d = 60(2.5)

d = 150 miles

Learn more about the equation of a proportional relationship on:

brainly.com/question/6869319

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8 0
2 years ago
Please I need like an explanation of how it was done.
a_sh-v [17]

Answer:

  the point is (3, 3) . . . . . . y = 3

Step-by-step explanation:

Write the point-slope equation of the line through the point you know. Then evaluate that equation for x=3 to see what the value of y is.

Point-slope form:

  y = m(x -h) +k . . . . slope m through point (h, k)

  y = -1/2(x -9) +0 . . . . line with slope -1/2 through point (9, 0)

For x=3, the value of y is ...

  y = -1/2(3 -9) + 0 = -1/2(-6) = 3

The value of y is 3.

4 0
3 years ago
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Susan has a rectangular fence around her swimming pool. The fence she built was 15 ft long, 10 ft wide and 6ft tall. How many sq
Dmitriy789 [7]

Answer:

300 Square feet

Step-by-step explanation:

Susan built a rectangular fence around her swimming pool.

Length=15ft

Width(or Breadth)=10ft

Height=6ft

To solve this, picture a cuboid with the top and bottom open, that is the key to finding the Surface Area of the Fence.

Surface Area of a Cuboid= 2(LW+LH+WH)

However since the top and bottom are open, the Surface Area becomes

Surface Area of the fence= 2(LW+WH)

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                                       =2(90+60)=2 X 150 =300

Susan uses 300 Square feet to build her fence.

8 0
3 years ago
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