3 years ago

Select the correct answer.

Mathematics

1 answer:

tamaranim1 [39]3 years ago

3 0

Answer:

f(x) = 3x+2

g(x) = 2x - 2

To find (f-g)(x)

(f-g)(x) = f(x) - g(x)

Substitute f(x) to 3x+2 and g(x) to 2x -2

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

Open the brackets

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

Rearrange

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

(f-g)(x) = x + 4

Answer is option A = x + 4

Step-by-step explanation:

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Question 1 What is the solution of n² - 49 = 0? 0 +7 07 -7 O no solution

Sphinxa [80]

Hey there!

This can be written as $n^{2}-(7)^{2}$

This is in form of $\fbox{a^{2}-b^{2}}$ , it can be expanded as $\fbox{(a-b)(a+b)}$

=> (n-7)(n+7)=0
=> n -7 = 0 or n + 7 = 0
=> n = 7 or n = -7

So option 7 , -7 are correct.

Hope this is clear :)
Have a good day:)

7 0

2 years ago

Read 2 more answers

10(a-2.5+0.56b) is this equivalent to 10a - 25+56b

kirill115 [55]

Hey there!

10(a - 2.5 + 0.56b)

= 10(a) + 10(-2.5) + 10(0.56b)

= 10a - 25 + 5.6b

= 10a + 5.6b - 25

Therefore, your answer is: 10a + 5.6b - 25

Good luck on your assignment and enjoy your day!