The distance traveled by the balloon in every minute makes an arithmetic sequence with a first term equal to 40 ft and common difference equal to 20. The nth term of an arithmetic sequence is calculated by,
an = a1 + (n - 1) x d
Substituting,
an = 40 + (15 - 1) x 20 = 320
Thus, the answer is letter B. 320 feet.

7 0

3 years ago

Analyze the scatterplot below, what prediction can you make about the group of students used in the study from the graph below?

SCORPION-xisa [38]

Answer:

i do not understand

Step-by-step explanation:

8 0

3 years ago

For a line that goes through points (2,-2) and (1.-6), what is the equation

sesenic [268]

Answer:

$y + 6 = 4[x - 1]\:or\:y + 2 = 4[x - 2]$

Step-by-step explanation:

First find the rate of change [slope]:

$\frac{-y_1 + y_2}{-x_1 + x_2} = m$

$\frac{2 - 6}{-2 + 1} = \frac{-4}{-1} = 4$

Then plug each of these coordinates into the Point-Slope Formula, $y - y_1 = m[x - x_1].$ Now remember, in this formula, all the negative symbols give the OPPOSITE terms of what they really are, so be EXTREMELY CAREFUL inserting the coordinates into the formula with their CORRECT SIGNS:

$y + 6 = 4[x - 1]\:or\:y + 2 = 4[x - 2]$

I am joyous to assist you anytime.

4 0

3 years ago