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3 years ago

Let f(x) = 2x - 7 and g(x) = -6x - 3. Find f(x) + g(x) and state its domain.

Mathematics

1 answer:

Klio2033 [76]3 years ago

7 0

2x-7+-6x-3 2x+-6x=-4x
-4x-10=0
-5/2 is the answer

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HELP ME NOW PLEASE, IM BEGGING.

svlad2 [7]

1. $1.23 per pair
A dozen is 12 so you do 12x7=84

Then you do 103.32 divided by 84 which gives you 1.23

2. His error was doing 103.32 divided by 7 because he thought it was only 7 pairs but it’s 7 dozen.

3 0

2 years ago

Read 2 more answers

Nine less than the product of 2 and number is equal to 7

user100 [1]

Answer:

x = 8

Step-by-step explanation:

Step 1: Write an equation

2x - 9 = 7

Step 2: Use the Addition Property of Equality

2x = 16

Step 3: Use the Division Property of Equality

x = 8

5 0

2 years ago

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Use geometric series to find the fraction of 0.8967898989

Sliva [168]

I'm guessing the repeating part is 89 at the end, so that

$x=0.8967\overline89\implies10^4x=8967.\overline{89}$

Then

$10^4x=8967+\displaystyle89\sum_{i=1}^\infty\frac1{100^i}$

$10^4x=8967+89\left(\dfrac1{1-\frac1{100}}-1\right)$

$10^4x=8967+\dfrac{89}{99}$

$x=\dfrac{8967}{10^4}+\dfrac{89}{99\cdot10^4}$

$x=\dfrac{443911}{495000}$

###

An arguably quicker way without using geometric series:

$10^4x=8967.\overline{89}$

$10^6x=896789.\overline{89}$

$10^6x-10^4x=887822$

$x=\dfrac{887822}{10^6-10^4}=\dfrac{443911}{495000}$

8 0

3 years ago

The fence is 106 meters long. Each section of fence is 3 meters long. How many sections were needed to complete the fence?

denis23 [38]

Answer: approximately 35
explanation:
divide 106 by 3 = 35.33

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2 years ago

Kiera pays $1.95 per song<br> she downloads.

Step2247 [10]

Answer:

1 song = $1.95

2 songs = $3.90

3 songs= $5.85

4 songs= $7.80

Explanation:

it's simple multiplying

6 0

2 years ago