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earnstyle [38]
3 years ago
11

If f(x) = 6x - 4, what is f(x) when x = 8?

Mathematics
2 answers:
Rufina [12.5K]3 years ago
8 0

Answer:

44

Step-by-step explanation:

Step 1:

f ( x ) = 6x - 4         Function

Step 2:

f ( x ) = 6 ( 8 ) - 4       Substitute

Step 3:

f ( x ) = 48 - 4       Multiply

Answer:

f ( x ) = 44     Subtract

Hope This Helps :)

torisob [31]3 years ago
5 0

Answer:

When x = 8, f(x) = 44

f(8) = 44

Step-by-step explanation:

So we are given that f(x) = 6x - 4 and we are asked to find what f(x) is if x = 8. To find this, we have to plug in 8 for x into the given equation and solve.

f(x) = 6(8) - 4 = 48 - 4 = 44

So when x = 8, f(x) = 44. We can shorten this to be f(8) = 44, as it shows that we are setting x = 8 in the equation.

I hope you find my answer and explanation to be helpful. Happy studying.

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2 years ago
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8 0
1 year ago
A party mix is made by adding nuts that sell for $2.50 per kg to a cereal mixture that sells for $1 per kg. How much of each sho
Sergio039 [100]

Answer:

44kg of cereal, 16kg of nuts

Step-by-step explanation:

Step 1. We work out how much the party mix would cost if all of it was nuts.

$2.50 x 60kg = $150

Step 2. We work out how much we want the party mix to cost if it had the correct ratio of nuts and cereal.

$1.40 x 60kg = $84

Step 3. We work out the difference between the two above numbers.

$150 - $84 =$66

Step 4. We work out the difference between the nut mix and the cereal mix.

$2.50 - $1 = $1.50

Step 5. We divide the answer to step 3 ($66) by the difference between the nut mix and cereal mix.

$66 ÷ $1.50 = 44

Step 6. The answer to step 5 is the mass of the cereal mix. We then minus 44kg from the total mix mass of 60kg to get the mass of the nut mix.

60kg - 44kg = 16kg

Step 7. We double check.

44kg of cereal = $44          16kg of nuts = $40           $44 + $40 = $84    

$84 ÷ 60kg = $1.4 per kg

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