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Darina [25.2K]
3 years ago
6

How do you solve 5n + 3 + 4n = 30

Mathematics
2 answers:
Thepotemich [5.8K]3 years ago
8 0
First you combine like terms. Adding 5n and 4n together to get 9n+3=30. Then you subtract 3 from 30 and end up with 9n=27.
Then you divide 27 by 9 and end up with n=3.
So the answer is 3.
maksim [4K]3 years ago
3 0
N=3
5n+3+4n=30 (add 5n and 4n)
9n+3=30 (Subtract 3 from both sides)
9n=27 (divide both sides by 9)
n=3
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I need help with this thank you!!
LenaWriter [7]

Answer:

Hi there!

The correct answer is: Based on parent function, the graph vertically stretched by a factor of 2, shifting to the left by 1 unit and moving vertically down by 5.

3 0
3 years ago
The slope of the line passes through the points (3,-6) and (7,y) is -2/3. Find y.
kirza4 [7]
-6-y / 3-7 = -2/3

-6-y / -4 = -2/3

Multiply through by  -12:-
3(-6-y) = 8

-18 - 3y = 8
3y =  - 26

y = -8 2/3


5 0
3 years ago
Suppose a Hispanic Heritage festival is held in an area measuring 2,494 square yards. If the length of the festival is 58 yards,
Kaylis [27]

Answer: 43 yards.

Step-by-step explanation:

Let the shape of the area occupied for festival be rectangle.

and area of rectangle = length x width

Given: Area of the festival= 2,494 square yards.

Length of the festival=  58 yards

Then width = (Area )÷ (length)

=  (2494)÷58  yards

= 43 yards

hence, the  width of the festival = 43 yards.

4 0
2 years ago
A shop owner can buy two televisions and three DVD players for $1750 or four televisions and one DVD players for $1250. Find the
Alenkasestr [34]

Answer:

Television = $200 and DVD player = $450

Step-by-step explanation:

→ Make 2 equations

Televisions = t and DVD players = d

2t + 3d = 1750

4t + d = 1250

→ Multiply the bottom equation by 3 to make the same variable of d

2t + 3d = 1750

12t + 3d = 3750

→ Minus the two equations to isolate the d variable

-10t = -2000

→ Divide both sides by -10 to find the cost of one television

t = 200

→ Substitute t = 200 back into 4t + d = 1250

800 + d = 1250

→ Minus 800 from both sides to isolate d

d = 450

7 0
2 years ago
It takes a printer 10 hours to print the class schedules for all of the students in a college. A faster printer can do the job i
kolbaska11 [484]
If for the slower printer it takes 10 hours for the whole thing, how much has it done in  1 hour?  well, since it takes 10 hours total, in 1 hour it has only done 1/10 th of the whole work.

the faster printer however, can do it in 6 total, how much has it done in 1 hour?  well, 1/6 of the whole work.

now, let's say, they both work together, and it takes "t" hours to finish the whole thing with both rolling.

let's add both rates to see how much that is,

\bf \stackrel{slower~printer}{\cfrac{1}{10}}~~+~~\stackrel{faster~printer}{\cfrac{1}{6}}~~=~~\stackrel{1hr~work}{\cfrac{1}{t}}\\\\
-------------------------------\\\\
\textit{LCD is 30}\implies \cfrac{3+5}{30}=\cfrac{1}{t}\implies \cfrac{8}{30}=\cfrac{1}{t}\implies t=\cfrac{30\cdot 1}{80}

which is 3 hours and 45 minutes.
4 0
3 years ago
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