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Ivan
3 years ago
14

Evaluate 4 - 2f when f = 1

Mathematics
1 answer:
kati45 [8]3 years ago
8 0

Answer:

\boxed 2

Step-by-step explanation:

Solve the equation when f = 1:

4 - 2f

-Plug in the value of f onto the equation and solve:

4 - 2f

4 - 2(1)

4 - 2

\boxed 2

So, the answer is 2.

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Determine the vertex of the function f(x) = 3x2 – 6x + 13.
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Answer:

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6 0
3 years ago
13. A contractor buys 8.2 square feet of sheet metal.
Veseljchak [2.6K]

Answer:

x = \frac{183}{6.7}  is the required equation.

The  Per sq ft of sheet costs $ 27.31.

Step-by-step explanation:

The total amount of sheet purchased =  8.8 sq. ft

The amount of sheet used = 2. 1 sq ft.

The worth of remaining sheet = $183

Let us assume the  cost per sq ft of sheet = $x

Now, the remaining sheet =

Amount of total sheet purchased- Amount of sheet used

= 8.8 sq. ft - 2. 1 sq ft. = 6. 7 sq. ft

So, the worth of the remaining sheet 6.7 sq ft is $183.

⇒ Worth of 1 sq ft of sheet = $183 /6.7 sq ft

or, x = \frac{183}{6.7}  = 27.31

or  x = $27.31

Hence, the  Per sq ft of sheet costs $ 27.31.

6 0
3 years ago
Using the formula C=2×n×r find the circumference of a circle of radius 5cm (n=3.14)
GalinKa [24]
The answer is 31.4 just do 3.14 times 5 times 2
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3 years ago
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Factorising quadratics <br><br> All questions please to be completed. I’m stuck.
Alex777 [14]

Answer:

1. (x +1)(x - 1)

2. (x+5)(x-5)

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Step-by-step explanation:

The first 4 expressions can be factored with the difference of squares type of factoring.

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ivanzaharov [21]
Nine hundred and fifty
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3 years ago
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