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2 years ago

To which set or sets does -20 belong?

Mathematics

2 answers:

il63 [147K]2 years ago

8 0

Answer:

B: integer and rational number

Step-by-step explanation:

whole numbers: 0, 1, 2, 3, 4, ...

integer: ..., -4, 3, -2, 1, 0, 1, 2, 3, 4, ...

rational number: any number that can be written as a fraction of integers

Answer: B: integer and rational number

Tema [17]2 years ago

5 0

Answer:

B and C.

Step-by-step explanation:

-20 is a negative integer.

It is also rational.

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Arrange the functions in ascending order, starting with the function that eventually has the least value and ending with the fun

IRINA_888 [86]

The functions have been arranged in ascending order from the least to the highest value below

3x
3x + 8
x^2
x^2 + 6
4^x
4^x + 3

<h3>What is meant by ascending order?</h3>

This is used in mathematics as well as other disciplines to explain the order by which values are arranged. This arrangement is usually done in such a way that the smallest value would come first and continue to climb till we get to the value that is the highest.

The values here have been arranged in this order in such a way that the smallest values came first while the bigger values are at the end.

Read more on ascending numbers here:

brainly.com/question/1462981

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8 0

1 year ago

I need so much help please somebody help me

marysya [2.9K]

Answer:

$448

Step-by-step explanation:

You need to find 2% of 400.00, so you would do this: 0.02 · 400 = 8

That means $8 is 2% of 400, so all you need to do is multiply 8 by 6 to get 48. Add that number to the original $400, and you get $448.

<em>Hope this answers your question!</em>

6 0

2 years ago

A candidate for mayor wants to know how strong her support is among voters, so she posts an online survey on her campaign websit

maks197457 [2]

1) A. Biased because the population could be uneven. Too many of one ethnicity, too many of one gender, etc.

2) I believe this one is C. because there are not enough people. You need to survey the majority of parents instead of a selected few.

3) There are 80 green marbles per 500, therefore calculate the percentage. $\frac{80}{500}=0.16$ or $16$ percent. Multiply $16$ percent or $0.16$ times 25. It gives you $4$ .

4) This one is a probability thing too. For every 500 batteries, there are 3 that are defective, therefore, $\frac{3}{500}= 0.006$ .

$0.006*12000 = 72$

5) Yet another one. Add up all the nuts and you get $48$ . The chance of getting a cashew from these $48$ is: $\frac{9}{48}=0.1875$ .

Therefore: $0.1875*32=6$

3 0

2 years ago

If the mean of 5 positive integers is 15, what is the maximum possible difference between the largest and the smallest of these

Vikki [24]

Answer:

if the 5 numbers are different, the maximum difference is 64

Step-by-step explanation:

We have 5 positive (different) integers, a, b, c, d and e (suppose that are ordered from least to largest, so a is the smallest and b is the largest.

The mean will be:

M = (a + b + c + d + e)/5 = 15.

Now, if we want to find the largest difference between a and e, then we must first select the first 4 numbers as the smallest numbers possible, this is:

a = 1, b = 2, c = 3 and d = 4

M = (1 + 2 + 3 + 4 + d)/5 = 15

M = (10 + d)/5 = 15

10 + d = 15*5 = 75

d = 75 - 10 = 65

then the difference between a and d is = 65 - 1 = 64.

Now, if we take any of the first 4 numbers a little bit bigger, then we will see that the value of d must be smaller, and the difference between d and a will be smaller.

5 0

2 years ago

Each day 1/2 of the money that is in bank value is removed. No money is added to the value. Which of the following represent the

Alchen [17]

Answer:

Option C. exponential decay function

Step-by-step explanation:

In this problem we have a exponential function of the form

$y=a(b^x)$

where

y ---> is the money that is in the bank

x ----> number of days

a ---> is the initial value or y-intercept

b is the base of the exponential function

r ---> is the rate of change

b=(1+r)

In this problem we have that

Each day 1/2 of the money that is in bank value is removed

$r=-50\%=-50/100=-0.50$ ---> is negative because is a decreasing function

The value of b is equal to

$b=1-r=1-0.50=0.50$

$y=a(0.50^x)$

The value of b is less than 1

b<1

That means -----> Is a exponential decay function

3 0

2 years ago