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ankoles [38]
3 years ago
9

What is the third term of the sequence defined by the recursive rule f(1)=3 f(n)=f(n-1)+4

Mathematics
1 answer:
snow_tiger [21]3 years ago
5 0
What is the third term of the sequence defined by the recursive rule f(1)=3 f(n)=f(n-1)+4

Need f(2):

f(2)=f(2-1)+4
f(2)=f(1)+4
f(2)=(3)+4=7

FIND f(3):
f(3)=f(3-1)+4
f(3)=f(2)+4
f(3)=(7)+4
f(3)=11
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The length of a rectangular room is 8 feet more than twice the width. If takes perimeter of the room is 124 feet, what are its d
Vlad1618 [11]

Hey there! I'm happy to help!

Let's call the length and width L and W respectively.

L=2W+8

2W+2L=124

We plug our value of L into the second equation and solve for W.

2W+2(2W+8)=124

We undo the parentheses with the distributive property.

2W+4W+16=124

Combine like terms.

6W+16=124

Subtract 16 from both sides.

6W=108

Divide both sides by 6.

W=18

We plug this W value into the first equation to solve for L.

L=2(18)+8

L=36+8

L=44

So, the length is 44 feet and the width is 18 feet.

Have a wonderful day! :D

8 0
2 years ago
Please help thank you!
Lena [83]
1 is D, an angle bisector only cuts the original angle in half.

2 is 
9x - 18 = 3x
6x - 18 = 0
6x = 18
x = 3

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6 0
3 years ago
11r + 7s written form plz i need help
charle [14.2K]

Answer:

eleven r plus seven s

Step-by-step explanation:

thats the written form

8 0
3 years ago
Which expression is equivalent to (3x)?<br> А 3х3<br> в 6х3<br> C9x3<br> D27х3
sergey [27]

Answer:

A-3x3 bc the parentheses are multiplying

7 0
3 years ago
Read 2 more answers
Evaluate f(-3) for f(x) = 2^x<br> a. 1/8<br> b. -8<br> c. 8<br> d. -6
pickupchik [31]

Answer:

A

Step-by-step explanation:

f(-3) = 2^-3

to get rid of a negative in an exponent, move the whole thing to the denominator.

1/(2^3)

2^3 = 2×2×2

1/(2×2×2)

1/8

6 0
2 years ago
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