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maria [59]
3 years ago
13

WILL SOMEONE PLZ HELP ME!! I'VE ASKED LIKE 5 TIMES NOW!!! Approximately how long will it take you to double your savings of $500

if you open a CD that earns 4% interest, according to the rule of 72?
Mathematics
1 answer:
USPshnik [31]3 years ago
4 0

Answer:

18 years

Step-by-step explanation:

Rule of 72

(72)/(interest)=years to double

72/4=18

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Deepak is choosing a password for his phone using letters from the alphabet, A-Z. The password must be four letters long, and he
storchak [24]

Answer: 26 × 4

Step-by-step explanation: There are 26 letters in the alphabet lettered A through Z.

Deepak is given the choice of picking a four letter password of his liking, using any four letters. Since the letters he uses can be repeated, it is 26 * 4 possibilities, since there are 26 different possibilities of letters from the alphabet he could choose, for 4 times. Also, since letters can be repeated, 26 stays the same. If letters could not be repeated, it would be 26 * 25 * 24 * 23.

4 0
2 years ago
Read 2 more answers
If you could please help
FinnZ [79.3K]

Answer:

SA =588 m^2

Step-by-step explanation:

SA = 4 pi r^2

R = 7 and pi =3

SA = 4*3 * 7^2

SA =588 m^2

6 0
3 years ago
A website charges $3 for each movie you download. They also charge a one-time sign-up fee of $14.99.
Igoryamba
I am sorry, but nobody can help until you put the question. Assuming it is Algebra, I can write this as function which would be y = 3x + 14.99 . Also, x has to be greather than zero because you cannot undownload a movie. y can also be something like f (m). m means the movies you downloaded. So it could also be f = 3m + 14.99 . If you want to graph it, I could do it for you.
3 0
4 years ago
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Evaluate 15x^2 − 13x − 17 if x = 3.
kykrilka [37]

Answer: 79 i think

Step-by-step explanation:

3 0
4 years ago
A ball is thrown in the air that is 48 feet above the ground with an initial vertical velocity of 32 feet per second. The height
anastassius [24]

Answer:

h(t) = -16(t - 1)² + 64

Step-by-step explanation:

The function that would best to use to identify the maximum height of the ball is the vertex form of the parabola.

The standard form of a quadratic function is  

y = ax² + bx + c

The vertex form is

y = a(x - h)² + k

where (h, k) is the vertex of the parabola.

h = -b/(2a) and k = f(h)

In your equation, h(t) = -16t^2 + 32t + 48

a = -16; b = 32; c = 48

Calculate h

h = -32/[2(-16)]

h = (-32)/(-32)

h = 1

Calculate k

k = -16(1)² + 32×1 + 48

k = -16      + 32    + 48

k =  64

So, h = 1, k = 64, a = -16

The vertex form of the equation is  h(t) = -16(t - 1)² + 64.

The graph below shows h(t) with the ball at its maximum height of 64 ft one second after being thrown.

7 0
3 years ago
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