3 years ago

Write a formula for the nth term of these geometric sequences. a4 = 6, a5 = 12

Mathematics

1 answer:

nikdorinn [45]3 years ago

3 0

(1.5)4 = 6, (2.4)5 = 12

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aiden weighs 39 pounds less than his brother Jacob. Jacob weighs more than 100 pounds. what could be the weights of the two brot

faltersainse [42]

Aiden - 62
brother - 138

3 0

3 years ago

TWO TRUTHS ONE LIE

Ivenika [448]

Answer:

(3) A"B"C" can be mapped onto A'B'C' by rotating it 180 degrees

Step-by-step explanation:

well, the other two are true, so that only leaves one option, sorry if this is wrong

5 0

2 years ago

In an arithmetic sequence {an}, if a1 = 5 and d = 3, find a72. A) 216 B) 218 C) 221 D) 223

Phoenix [80]

The arithmetic sequence with the given condition is determined recursively by

$\begin{cases}a_1=5\\a_n=a_{n-1}+3&\text{for }n>1\end{cases}$

So we have

$a_2=a_1+3$

$a_3=a_2+3=a_1+3(2)$

$a_4=a_3+3=a_1+3(3)$

and so on with the general pattern

$a_n=a_1+3(n-1)$

This means the 72nd term in the sequence is

$a_{72}=a_1+3(72-1)=5+3(71)=218$

so the answer is B.

6 0

3 years ago

The perimeter of a rectangular pool is 314 m.

ycow [4]

Answer:

The length is 91 meters

Step-by-step explanation:

The perimeter formula is 2W · 2L = 314

We know the width is 66 m, so we can then say:

132 · 2L = 314

-132 -132

2L = 182

L = 91

Hope this helped!

7 0

3 years ago

Find the area of the triangle

makkiz [27]

Answer:

84mm

Step-by-step explanation:

Formula of a triangle:

A =bh/2

A=14(12)/2

A=168/2

A=84mm

5 0

3 years ago