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Paladinen [302]
3 years ago
11

F(x) = 2x2 – 3x 7 for the input value 2.what is the value of the function when x = 2?

Mathematics
1 answer:
Ad libitum [116K]3 years ago
8 0
I hope this helps you




1)




f (2)=2.2^2-3.2-7



f (2)=8-6-7


f (2)= -5



2)



f (2)=2.2^2-3.2+7



f (2)=8-6+7


f (2)=9
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Gabby and Sydney bought some pens and pencils. Gabby bought 4 pens and 5 pencils for $6.71. Sydney bought 5 pens and 3 pencils f
denpristay [2]

Answer:

The cost of each pens is $1.19

The cost of each pencils is $0.39

Step-by-step explanation:

Given as :

The number of pens bought by Gabby = 4

The number of pencils bought by Gabby = 5

The number of pens bought by Sydney = 5

The number of pencils bought by Sydney = 3

The total cost of Gabby items = $6.71

The total cost of Sydney items =$7.12

Let The cost of each pens = x

And The cost of each pencils = y

Now, According to question

For Gabby

4 x + 5 y = $6.71           .............1

For Sydney

5 x + 3 y = $7.12           .............2

Now, Solving both equations

5 × (4 x + 5 y) - 4 × (5 x + 3 y) = 5 × 6.71 - 4 × 7.12

Or, 20 x + 25 y - 20 x - 12 y = 33.55 - 28.48

Or, (20 x - 20 x) + (25 y - 12 y) = 5.07

or, 0 + 13 y = 5.07

∴ y = \frac{5.07}{13}

I.e y = $0.39

So, The cost of each pencils = y = $0.39

Again , put The value of y in eq 1

I,e 4 x + 5 y = $6.71    

Or, 4 x + 5 × 0.39 = 6.71

or, 4 x + 1.95 = 6.71

or, 4 x = 6.71 - 1.95

or , 4 x = 4.76

∴  x = \frac{4.76}{4}

I.e x = $1.19

The cost of each pens = x = $1.19

Hence The cost of each pens is $1.19

And The cost of each pencils is $0.39   Answer

6 0
3 years ago
I need help for this
Leona [35]
Got you
S' = 4,-3
Y'= 7,-2
U' = 8,--5
V' = 2,-6

3 0
3 years ago
Can you just give me answers
sammy [17]

Answer:

to what

Step-by-step explanation:

5 0
3 years ago
300% of what number 90?
GenaCL600 [577]

The answer is 90 is 300% of 30



6 0
3 years ago
if the farm needs to pack 12,70,224 litchis in boxes that hold 144 litchis ,how many boxes would be required .​
uysha [10]

For this, we will divide 1,270,224 by 144.

1,270,224 ÷ 144 = 8,821.

For this result, we can conclude that the number of boxes required to pack 1,270,224 litchis is 8,821 boxes.

7 0
3 years ago
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