3 years ago

A car travels 430 miles and uses 18 gallons. How many miles per gallon does the car need

Mathematics

1 answer:

Sidana [21]3 years ago

8 0

Answer:

23.88 miles/gallon.

Step-by-step explanation:

Given data:

Total distance covered by car = 430 miles

Total gallons used by car = 18 gallons

Miles per gallons = ?

Solution:

Miles per gallon car does = Total distance covered by car/Total gallons used by car

By putting values in above formula:

Miles per gallon car does = 430 miles/18 gallons

= 23.88888 miles/gallon

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How can we factorise the expression: 2x^6+17x^3+8?

LekaFEV [45]

Answer:

$(a + 2)( {a}^{2} - 2a + 4 )(2 {x}^{ 3} + 1)$

Step-by-step explanation:

$2x^6+17x^3+8 \\ = 2x^6+16x^3 + {x}^{3} +8 \\ = 2{x}^{3} ( {x}^{3} + 8) + 1( {x}^{3} + 8) \\ = ( {x}^{3} + 8)(2 {x}^{ 3} + 1) \\ = ( {x}^{3} + {2}^{3} )(2 {x}^{ 3} + 1) \\ = (a + 2)( {a}^{2} - 2a + {2}^{2} )(2 {x}^{ 3} + 1) \\ = (a + 2)( {a}^{2} - 2a + 4 )(2 {x}^{ 3} + 1) \\$