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3 years ago

13

Write the recursive formula for the geometric sequence: a1 = -2, a2 = 8, a3 = -32

1 answer:

Veronika [31]3 years ago

6 0

In the sequence, we are given with -2, 8, -32...This is a geometric type of sequence with a geometric ratio of 4. a1 is equal to -2 and r is equal to 4The expression is
a n = a1 * r ^ (n-1) where n is an integer ora n = a1 * (-4) ^ (n-1)we can check or verify this using the given

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An arrow is shot vertically upward at a rate of 240 feet per second from ground level. Use the projectile formula to determine w

Juli2301 [7.4K]

Answer:

After 14.92 seconds, the arrow hits the ground.

Step-by-step explanation:

Given:

Initial velocity of the arrow is, $u=240\ ft/s or 73.152\ m/s$

The arrow goes up and come back to the same starting position. So, initial position is same as that of final position.

Therefore, displacement of the arrow is 0 m.

The displacement of the arrow is given as:

$s=ut-\frac{1}{2}gt^{2}$ (equation 1)

Plug all value in equation 1 and solve for $t$

$0=73.152\timests t-\frac{1}{2} \times9.8 \times t^{2}$

$0=73.152\timests t-4.9 \times t^{2}$

$0=t(73.152-4.9 \times t)$

$73.152-4.9\times t=0$ where $t\neq 0$

$4.9\times t=73.152$

$t=\frac{73.152}{4.9}= 14.92\ s$

∴ After 14.92 seconds, the arrow hits the ground.

5 0

3 years ago

Fill in the blanks to complete the equation: 1 3/5= blank+3/5

Galina-37 [17]

The answer is..

1 3/5=1+3/5

5 0

3 years ago

Help<br> Please thanks!!!!

expeople1 [14]

6 i believe but im not sure

5 0

3 years ago

What is equal to 1.468 x 10 5

Vesnalui [34]

Answer: If u mean 1.468 multiplied by 105, then the answer is 154.14

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Casandra is calculating how much interest she will earn in investments that are eating simple interests. She knows that simple i

Zinaida [17]

Answer:

Principal = $500

Interest = $37.50

Rate = 0.025 = 2.5%

Time = 3 years

Step-by-step explanation:

The formula for simple interest is I = PRT ÷ 100

Casandra's equation = I= 500(0.025)(3)=$37.50

Principal = $500

Interest = $37.50

Rate = 0.025 = 2.5%

Time = 3 years

3 0

3 years ago