it follows the same structure on the x-axis as cosine, but the curve is stretched up an down to reach values between -5 and +5 instead of between -1 and +1

7 0

2 years ago

Betsy is saying for a bird cage. She saves $1 the first week, $3 the second week, $9 the third week, and so on. All together how

Zigmanuir [339]

Answer:

Betsy will save $121 in 5 weeks.

Step-by-step explanation:

We can see that Betsy's savings are 3 times the saving of her last week. We can see that this is an geometric sequence as 1,3,9,..

To find the sum of our geometric sequence we will use $S_{n}=a\cdot \frac{1-r^{n}}{1-r}$ , where n is number of terms we are taking sum of, a is first term of sequence and r is common ratio of the sequence.

$S_{5}=1\cdot \frac{1-3^{5}}{1-3}$

$S_{5}=\frac{1-243}{-2}$

$S_{n}=\frac{-242}{-2}=121$

Therefore, Betsy will save $121 in 5 weeks.

8 0

3 years ago

I need help the problem does not make sense

denis23 [38]

The answer is D. The temperature coefficient should be -1,5 as the temperature is dropping by the hour. Furthermore the starting temperature is 72 degrees so that should be added to the final answer. Therefore you get t = -1.5h + 72

6 0

4 years ago

Given that f(x) = 2x + 1 and g(x) = the quantity of 3x minus 1, divided by 2 , solve for g(f(3)). (5 points)

BARSIC [14]

The answer to the question

3 0

4 years ago