Consider U = {x|x is a negative real number}.

Which is an empty set?

{x|XE U and x has a negative cube root}

{x\X E U and x has a negative square root}

{x\x € U and x is equal to the product of a positive number and -1}

{XIX E U and x is equal to the sum of one negative and one positive number}

{x | x ∈ U and x has a negative square root} is an empty set.

Where U = {x | x is a negative real number}.

Step-by-step explanation:

Given U = {x | x is a negative real number}.

This set can be written as

U = {-1, -2, -3, ..., -1000, ...}

Let us consider the options to see which one is an empty set.

(1) x has a negative cube root.

This is correct, as the cube root of any number in the set gives a negative value.

(-1)³ = -1 × -1 × -1 = -1

(-2)³ = -2 × -2 × -2 = -8

(-10)³ = -10 × -10 × -10 = -1000

and so on.

So, x ∈ {-1, -2, ..., -10, ...}

This is not an empty set, it is not the correct option.

(2) x has a negative square root.

This is incorrect, as the square root of any number in that set gives a positive value.

(-1)² = -1 × -1 = 1

(-2)² = -2 × -2 = 4

(-9)² = -9 × -9 = 81

and so on. This is the correct option as {x | x ∈ U and x has a negative square root} is an empty set.

(3) x is the product of one positive number and -1.

This is correct.

-1 = 1 × -1

-5 = 5 × -1

-15 = 15 × -1

and so on.

So, x ∈ {-1, -2, ..., -15, ...}This is not an empty set, it is not the correct option.

(4) x is the sum of one negative number and a positive number.

This is correct as

-1 = -2 + 1

-4 = -13 + 9

-50 = -55 + 5

and so on.

So, x ∈ {-1, -2, ..., -50, ...}This is not an empty set, it is not the correct option.

I think it’s B. On edge.

part a

in a city ice cream is mostly only bought when the temperature is very high as ice cream cools down our

so we can derive the conclusion that as the temperature increases the number of ice creams sold also increases

part b

y intercept is 5

slope is 2

happy to

pls mark as brainliest

2(2x + 3) = -4 + 2(2x + 5)

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 6

4x - 6 + 6 = 4x - 6 + 6

4x = 4x

x = x

unlimited solutions.