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IRISSAK [1]
3 years ago
10

If f(1) = 7 and f(n) = 5(n-1) + 2, then f(4) =

Mathematics
1 answer:
Igoryamba3 years ago
4 0

Answer:

17

Step-by-step explanation:

f(n)=5(n-1)+2

f(4)=5(4-1)+2

=5×3+2

=17

hope it helps

plz. mark as brainliest

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2. There are 18 girls and 21 boys in a classroom. Write the ratio of girls to boys<br><br><br>help​
grigory [225]

Answer:

6:7

Step-by-step explanation:

both values can be divided by 3

8 0
3 years ago
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A triangle has a perimeter of 39 feet. If the three sides of the triangle are n, 4n-2, and 5n-9, what is the length of each side
lyudmila [28]

Answer:

The sides are 5,18,16

Step-by-step explanation:

To find the perimeter of a triangle, we add up all the sides

n +4n-2 + 5n-9 = 39

Combine like terms

10n -11 = 39

Add 11 to each side

10n-11+11 = 39+11

10n = 50

Divide by 10

10n/10 =50/10

n = 5

Now we need to find each side

n = 5

4n-2 = 4(5)-2 = 20-2 =18

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5 0
4 years ago
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True or false conceptually the circumference is the perimeter of a circle?
kvasek [131]

Answer:

True

Reasoning:

The circumference of a circle means the same thing as the perimeter of a circle.

3 0
3 years ago
Solve the right triangle shown in the figure.<br> B = 16.9°, b = 30.5
Aloiza [94]

Answer:

A=73.1

a=100.387

c=√ 11007.799769

Step-by-step explanation:

A=180-90+16.9=73.1

Tan(16.9)=30.5/a

=100.387

a^2+b^2=c^2

100.387^2+ 30.5^2=c^2

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7 0
4 years ago
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Aleksandr [31]
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5 0
3 years ago
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