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Tomtit [17]
3 years ago
13

What is 20-7n=8(n-2). Please show steps.

Mathematics
1 answer:
ipn [44]3 years ago
4 0

First, you need to distribute the right side of the equation : 8n - 2

Now the equation is : 20 - 7n = 8n - 2

Add 2 to both sides : 22 - 7n = 8n

Add 7n to both sides : 22 = 15n

Divide both sides by 15 : ( I had to round this one) 1.5 = n

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7 0
4 years ago
If f(x) = 2x² - 6x + 8, find f(a - 2).
yan [13]

Answer: f(a-2) = 2a² - 14a + 28

Step-by-step explanation:

f(x) = 2x² - 6x + 8

you can take a-2 and substitute it for each x, which would look like this:

f(a-2) = 2(a-2)² - 6(a-2) + 8

then distribute those in ( )

f(a-2) = 2a² - 8a + 8 - 6a + 12 + 8

combine like terms

f(a-2) = 2a² - 14a + 28

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2 years ago
Find f'(x) for the given function.<br> f(x)=1/8+x
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3 0
3 years ago
Can you guys see if you can solve B) for me plz
yanalaym [24]
In the b section on this piece of paper, we can see, that this would practically be a pie graph, or if you would want to call it a graph in general. As the question stated, we see how we would want to find the perimeter of the figure. So this, sense this would only be 1/4 of the figure, we would then do 4(in) x's 4 and from this, your perimeter would give you 16(in).
8 0
3 years ago
In a school with 700 students, a survey revealed that 80% of the students liked the new lunch menu. Based on this data, how many
choli [55]

Answer:

560 students

Step-by-step explanation:

700 x 0.8 = 560

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3 years ago
Read 2 more answers
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