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Anvisha [2.4K]
1 year ago
11

4x - 7 = 8 What is the value of x? Show your working.

Mathematics
2 answers:
skad [1K]1 year ago
7 0

Answer:

15/4 (or) 3.75

Step-by-step explanation:

Let's find the required value of x,

→ 4x - 7 = 8

→ 4x = 8 + 7

→ 4x = 15

→ x = 15/4

→ [ x = 3.75 ]

Therefore, the value of x is 3.75.

erica [24]1 year ago
4 0

Answer:

<h2><u><em>x =</em></u><u><em> </em></u><u><em>3.75</em></u></h2><h2><u><em>or</em></u></h2><h2><u><em>x = 3 3/4</em></u></h2>

Step-by-step explanation:

4x - 7 = 8

What is the value of x? Show your working.

4x - 7 = 8

4x = 8 + 7

4x = 15

x = 15 : 4

x = 3.75

or

x = 3 3/4

--------------------

check

4 * 3.75 - 7 = 8

15 - 7 = 8

8 = 8

the answer is good

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a.                                   The Ford TriVan   The Honda CityVan

Total life-cycle costs          $94,368                $90,936

Based on life cycle cost, the Honda CityVan is the best choice.

b. Blue Star needs to put on the Ford TriVan 9,032 miles more for the cost to be equal with the Honda CityVan's.

c. The crossover point in years = 5 months

Step-by-step explanation:

a) Data and Calculations:

                                        The Ford TriVan   The Honda CityVan

Purchase costs                  $28,000                 $32,000

Fuel efficiency per gallon   24 miles                 37 miles

Operating cost per mile     $0.20                     $0.22

Total operating costs         $4,400                   $4,840

Estimated annual distance 22,000 miles        22,000 miles

Gallons of fuel consumed  916.7 (22,000/24) 594.6 (22,000/37)

Total cost of fuel                 $3,896                  $2,527

Fuel cost per mile              $0.18                      $0.115

Total cost per mile             $0.38                     $0.335

Expected life of truck         8 years                   8 years

Average gas price = $4.25 per gallon

Total costs:

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Annual costs:

Total operating costs         $4,400                   $4,840

Total cost of fuel                $3,896                   $2,527

Annual costs                      $8,296                   $7,367

Life cycle costs:

Annual costs for 8 years   $66,368                $58,936

Purchase costs                  $28,000                $32,000

Total life-cycle costs          $94,368                $90,936

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The wrong statement in Viktor's summary is When a round solid ball is placed in a box, the ball takes the shape of the box

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According to the above, the error in Viktor's summary is in the first phase, and the correct statement is A. because solids does not take the shape of its container.

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