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irina1246 [14]
3 years ago
11

Given: f(n) = 3n-5 and g(n) = 2n-1Find: (fog)(5​

Mathematics
1 answer:
laiz [17]3 years ago
4 0

Answer:

22

Step-by-step explanation:

So we have the two functions:

f(n)=3n-5\text{ and } g(n)=2n-1

And we want to find (fog)(5). This is the same as:

(f\circ g)(5)=f(g(5))

So, find g(5) first:

g(5)=2(5)-1\\

Multiply and subtract:

g(5)=10-1=9

So, we can substitute:

f(g(5))=f(9)

Find the value:

f(9)=3(9)-5

Multiply and subtract:

f(9)=27-5=22

So:

(f\circ g)(5)=22

And we're done!

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3 years ago
A new field has a perimeter of 220 m and a width of 62 m. A bag of canola seed will cover 185 m2 of ground. How many bags of can
siniylev [52]

Answer:

17

Step-by-step explanation:

Assuming the field is a rectangle, the perimeter is found through the equation:

P = 2l + 2w

Since we know the perimeter and width, we can substitute and solve for the length.

(220) = 2l + 2(62)\\220 = 2l + 124\\96 = 2l\\l = 48\\

Using the length and width, we can find the area.

A = lw\\A = (48)(62)\\A = 2976

The area is 2976 squared meters. We divide by the area a bag of canola seed can cover and round up if necessary to find the total number of bags.

n = 2976 / 185\\n = 16.09

Because we need a whole bag in order to cover for the decimal area, we round up to 17 bags.

7 0
2 years ago
What is the value of 9x÷y³?
scoundrel [369]
I think the answer is:
Y=0
8 0
3 years ago
A family went to a restaurant for dinner. The bill before tax and tip was $52.78. The sales tax is
Sergeeva-Olga [200]

Answer:

B

Step-by-step explanation:

52.78×6.5%=3.43

52.78×18%=9.50

52.78+3.43+9.50=65.71

4 0
2 years ago
Find the value of 7×+2y when x=2and y=-9
jeka94
The answer should be -4,
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3 years ago
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