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astra-53 [7]
3 years ago
11

Given f as described below.

Mathematics
1 answer:
Illusion [34]3 years ago
6 0

Answer with Step-by-step explanation:

We are given that a function

f:W\rightarrow W

Assign each whole number to its largest place value digit.

f(4)=4

f(14)=4

f(194)=9

We have to find the value of x that makes the equation 7 a true statement.

When f(x)=7

Then, the possible values of x are 7,127,27,257,... .

Because f(7)=7

f(127)=7

f(27)=7

f(257)=7

Therefore, the value of x =7,127,257,27,..

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Among all pairs of numbers with a sum of 105 , find the pair whose product is maximum. Write your answers as fractions reduced t
Bond [772]

Answer: Hence Pair( x, y) = [ 105/2, 105/2]

Step-by-step explanation:

Given that;

Among all pairs of numbers with a sum of 105;

the pair whose product is maximum = ?

so let pairs of numbers with a sum of 105 be x and y respectively

x + y = 105

let y = 105 - x

now

product = xy =  x( 105 - x ) = 105x - x²

now

p(x) = 105x - x²

for maximum value of p

dp/dx =0

⇒ dp/dx = 105 - 2x = 0

2x = 105

x = 105/2

y + x = 105

y = 105 - x

y = 105 - 105/2 = 105/2

Hence Pair( x, y) = [ 105/2, 105/2]

8 0
3 years ago
Gabriela drew a net of a rectangular prism on
shtirl [24]

Answer:

412 squares

Step-by-step explanation:

16o

140

172

412

trust me on this

5 0
3 years ago
Evaluate 5 - t/3 when t = 12.
Nady [450]

5 - t/3

5 - 12 /3

-7/3

4 0
3 years ago
Read 2 more answers
Question attached below
tamaranim1 [39]

Answer:

B . f(x+h)=\frac{x+h}{1+x+h}

Step-by-step explanation:

Given function is:

f(x)=\frac{x}{1+x}

Sall h is used to denote minor change in function. The value of the new function f(x+h) will be calculated by putting x+h in place of x in the function.

So putting x+h in place of x

f(x+h)= \frac{x+h}{1+(x+h)}\\=\frac{x+h}{1+x+h}

So, option B is the correct answer ..

6 0
4 years ago
Evaluate -8x+5-2x-4+5x
juin [17]

Answer:

The value of the expression is - 9.

Evaluating the expression before simplifying is preferred because you only have to substitute once instead of substituting three times.

Step-by-step explanation:

x = 2

- 8x + 5 - 2x - 4 + 5x

= - 8x - 2x + 5x + 5 - 4

= - 10x + 5x + 1

= - 5x + 1

= - 5 ( 2 ) + 1

= - 10 + 1

= - 9

3 0
3 years ago
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