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denis23 [38]
2 years ago
11

12) -6n – 20 = -2n +4(1 – 3n) What’s the first step

Mathematics
1 answer:
EastWind [94]2 years ago
4 0

Answer:

n = 3

Step-by-step explanation:

-6n - 20 = -2n + 4 (1-3n)

First distribute the 4 (1-3n)

-6n - 20 = -2n + 4 - 12n

Combine like terms on the right side

-6n - 20 = -14n + 4

Get 'n' on one side by adding -6n to both sides

-20 = -8n + 4

Subtract 4 to both sides

-24 = -8n

Divide -8 to both sides

3 = n

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8 books cost \$19.60$19.60dollar sign, 19, point, 60.
snow_tiger [21]

Answer: C=[ (10) x (19.60)÷ (8)]

Step-by-step explanation:

Given , The cost of 8 books = $ 19.60

Then, By UNITARY method , the cost of one book = ( Cost of 8 books ) ÷ ( 8)

i.e. The cost of one book = ($19.60) ÷ ( 8) ...(i)

Now , cost of 10 books = (10) x (Cost of one book)

From (i) , we get

Cost of 10 books =$[ (10) x (19.60)÷ (8)]

Let C be the cost of 10 books ( in dollars) .

So , the equation would help determine the cost of 10 :

C=[ (10) x (19.60)÷ (8)]

7 0
2 years ago
Ruby signed up for a frequent-filer program. She receives 3400frequent-flier miles for the first round trip and 1200 miles for a
vovangra [49]

Answer: 8200 miles

Step-by-step explanation:

Based on the question, since she wants to go for five round trips, her first round trip is fixed at 3400 and she will have 4 more additional trips. This can them be calculated as:

= 3400 + 1200x

x = additional trips = 4

We then put the value of x into the equation

= 3400 + 1200x

= 3400 + 1200(4)

= 3400 + 4800

= 8200

She'll have 8200 mile after 5 round trips

3 0
2 years ago
If f(x) = (x - 1) / (x + 2), then the range of f is given by the interval
Veseljchak [2.6K]

Answer:

B and D

Step-by-step explanation:

Have a great day!

/(OvO)/ *.':☆ *': .✧

3 0
2 years ago
Read 2 more answers
Which of the following values represent a meaningful difference between two populations? Select all that apply.
Lina20 [59]

Answer: I got you if its not to late  the answer is 2,3

Step-by-step explanation

anything above 2 is meaningful so first you would subtract 21.9 28.1 to get  3.7 its above 2 so that's one do the same for the rest anything above 2 is your answer or right at two really hope this helps

6 0
3 years ago
Simplify -3(2x-4)+8x-8
ryzh [129]
-3(2x-4)+8x-8
-6x+12+8x-8
2x+4
x=2
3 0
3 years ago
Read 2 more answers
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