Ask question

Ask question

All categories

3 years ago

12

Can someone help me in this exercise, it is about functions. Thank you

1 answer:

Gnesinka [82]3 years ago

5 0

Answer:

a)

Since the radius of the balloon increases by 5 cm every second, the amount of time passed in seconds multiplied by 5 will give us the radius at any given point in time

So, f(t) = 5t

b)

Since the surface area of a sphere is 4 $\pi$ (r)^2

We already have the radius of the sphere at any given time from our first equation

SA(t) = 4 $\pi$ (5t)²

Kindly Mark Brainliest, Thanks!

You might be interested in

a free tailed bat can fly 232 feet in 4 seconds. A hummingbird can fly 343 feet in 7 seconds. Which can fly fast and by how much

Katarina [22]

Step-by-step explanation:

First, we need to find the unit rate of each animal (how many feet each animal can fly in a second). We do this by dividing the number of feet flown by the number of time.

Bat: 232/4 = 58 ft per second
Hummingbird: 343/7 = 49 ft per second

Based off of this information, we can conclude that the bat can fly faster than the hummingbird.

7 0

2 years ago

Read 2 more answers

a bag contains 5 red cards numbered 1-5 and 5 white cards numbered 1-5. You choose a card at random. Find the possible outcomes

9966 [12]

1 red
2 red
3 red
4 red
5 red
1 white
2 white
3 white
4 white
5 white

7 0

3 years ago

What is hte vertex of f(x) = 5x^+20x-16

hjlf

What is the exponent ?

6 0

4 years ago

Hurry plz help plz don't do this for the points i will mark brainliest if given correct answer. For this item, complete the choi

cricket20 [7]

Answer:

m<v' is 133 m<x' is 102 m<y' is 136

Step-by-step explanation:

when reflecting the shape doesn't change shape or size so the angle measure will stay the same

6 0

3 years ago

In Cecilia’s CD collection, 1/5 of her Jazz CDs represents 1/10 of all her CDs. What is the ratio of her Jazz CDs to her non-Jaz

KatRina [158]

Answer: The required ratio is 1:1.

Step-by-step explanation:

Let the total number of CDs be 100

$\frac{1}{10}$ of CDs is given by

$\frac{1}{10}\times 100\\\\=10$

According to question,

$\frac{1}{5}$ of her Jazz CDs represents $\frac{1}{10}$ of all her CDs.

Let the number of Jazz CDs be x

So, it becomes

$\frac{1}{5}\times x=10\\\\x=10\times 5\\\\x=50$

So, Number of Jazz's CDs is 50

Number of Jazz non CDs is given by

$100-50=50$

Ratio of her CDs to her non- CDs is given by

$50:50\\\\1:1$

Hence, the required ratio is 1:1.

6 0

3 years ago