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zvonat [6]
3 years ago
14

Let f(-x) = 5x – 2 and g(x) = 2x + 3 and find f(x) –

Mathematics
1 answer:
n200080 [17]3 years ago
8 0

Answer:

3x - 5

Step-by-step explanation:

Given that f(x) = 5x - 2 and g(x) = 2x+3

f(x) - g(x) = 5x-2 - (2x+3)

Expand

f(x) - g(x)  = 5x - 2 - 2x - 3

Collect like terms

f(x) - g(x) = 5x - 2x -2-3

f(x) - g(x)  = 3x - 5

Hence the required answer is 3x - 5

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Naomi is reading a book that has 420 pages she reads 35 pages each day how many days will naomi need to finish this book
posledela

Answer:

12 days

Step-by-step explanation:

420/35 to find amount of days to finish book

420/35 = 12

8 0
3 years ago
Circles M and K are congruent, arc QR is congruent to arc LN and arc OP is congruent to arc VW. Find x.
SCORPION-xisa [38]

Given, arc QR is congruent to arc LN and arc OP is congruent to arc VW.

And the expressions for each arc in the diagram also given as:

Arc QR = 2x - y, arc LN = 11 , arc OP= 10 and arc VW=5x+y.

Hence, we will get the system of equations as following:

Arc QR = Arc LN

2x - y = 11 ...(1)

Arc OP = Arc VW

5x + y = 10 ...(2)

We need to find the value of x. So, we can add the equations to eliminate y so that we can solve the equations for x. Therefore,

2x+5x = 11 + 10

7x = 21

\frac{7x}{7} =\frac{21}{7} Divide each sides by 7.

So, x= 3

6 0
4 years ago
Tony’s club is selling oranges to raise money. For every box they sell, they get 1 1/8 dollars profit. They have sold 75 boxes a
dmitriy555 [2]

Tony’s club is selling oranges to raise money. For every box they sell, they get 1 1/8 dollars profit. They have sold 75 boxes already. How many more boxes must they sell to raise 180 dollars?

Answer: We are given:

The amount of money Tony's club get for every box they sell =1 \frac{1}{8} =1.125 dollar

They amount of money Tony's club has raised by selling 75 boxes is:

75 \times 1.125=84.375 dollars

The amount of money Tony's club is required to raise = 180 dollars

The remaining need to be raised is :

180-84.375=95.625 dollars

Therefore, the number of more boxes to be sold are:

\frac{95.625}{1.125}=85

Hence, 85 more boxes they must sell to raise 180 dollars

8 0
3 years ago
Find the value of b. B² = 256
Jlenok [28]

B^2=256

\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}

B=\sqrt{256},\:B=-\sqrt{256}

\sqrt{256}

\mathrm{Factor\:the\:number:\:}\:256=16^2

=\sqrt{16^2}

=16

-\sqrt{256} =-16

B=16,\:B=-16

<h3><em>Hope I helped you!</em></h3><h3><em>Success!</em></h3>

<em>by a random romanian guy</em>

7 0
3 years ago
Find the area of the following
Dmitriy789 [7]

Answer:

11.180339887498cm or 11.2cm

Step-by-step explanation:

Using pythagoras- a² + b² = c²

Therefore 5² + 10² = 125²

Root of 125 will be the answer

4 0
3 years ago
Read 2 more answers
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