Instantaneous rate of change = S'(r) = 8πr
S'(8) = 8π(8) = 64π

Therefore, the instantaneoud rate of change of the <span>surface area with respect to the radius r at r = 8</span> is 64π

7 0

3 years ago

John played a note on his tuba that vibrated the air 120 times per second. If you play the note for 4 seconds, how many times in

Zigmanuir [339]

480

This is this awnser because its 120 a second, for 4 seconds so 4 times 120 = 480.

4 0

3 years ago

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Find two numbers that have a sum of -2 and a product of -48 (please show work if possible)

andreev551 [17]

Answer: -8 and 6

Step-by-step explanation:

factors of 48: 1,2,4,6,8,12,24,48

1 x 48

2 x 24

4 x 12

6 x 8

for a negative product, one of the factors must be negative and the other positive.

for two number to have a sum of -2, the greater number must be the negative number, and both numbers should have be two values apart (ex. 6 and 8, 3 and 5, 12 and 14, etc.). In this case, 8 would have to be negative whereas 6 will be left positive.

and then we check:

-8 x 6 = 48

-8 + 6 = -2

5 0

3 years ago

Triangles ABC and DEF have the following characteristics B and Eare right angles A = D BC = EF which congruence theorem can be u

kvasek [131]

AAS Angles A and D are one pair of congruent angles, then angles B and E are congruent because they are both right angles, following that you have line BC as congruent to EF so that is an angle, an angle, and a side so AAS

Read more on Brainly.com - brainly.com/question/7297105#readmore

6 0

3 years ago