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Sliva [168]
2 years ago
14

Select ALL the correct answers,

Mathematics
1 answer:
Alina [70]2 years ago
5 0

Answer:

7,y,6, and x are the correct answers

Step-by-step explanation:

You might be interested in
What is 12 less than 15 times x?
Hatshy [7]
15x - 12 Then you got X= 12/15
8 0
3 years ago
What is the value of x in the equation7x+2y=48 when y=3​
ad-work [718]
Substitute y with 3

7x + 2(3) = 48

7x + 6= 48
Minus 6 over
7x = 42
X= 6

Hope this helps!
8 0
2 years ago
Read 2 more answers
What values of X make this rational expression undefined?
aniked [119]

This rational expression is undefined when the denominator equals 0, as it would return an undefined answer due to the inability to divide by 0.


Set the denominator to equal 0:


x^2 + 2x - 24 = 0


Since this is a trinomial, we need to find the factors that multiply into this expression. The factors will represent the zeros that we can plug into the equation to get it to equal 0.


The trinomial uses the following formula:


ax^2 + bx + c


Our b value is 2, and our c value is -24.


To find the factors, we need to find two numbers that multiply to -24, and two numbers that add up to 2.


Factors of 24: {1,2,3,4,6,8,12,24}


List out the sets of two factors that will multiply into 24:


{1,24}

{2,12}

{3,8}

{4,6}


Since b is 2, we will choose the set of two factors that have a difference of 2 between them. This means that we will use {4,6}, as there is a difference of 2 between these two numbers.


c is a negative value, and b is a positive value, so the bigger number will be the negative factor in this expression.


We now have our x-values: 4 and -6. These two values will make the expression equal 0.


To check that this is correct, plug these values into the equation:


(4)^2 + 2(4) - 24 = 16 + 8 - 24 = 0

(-6)^2 + 2(-6) - 24 = 36 - 12 - 24 = 0


x-values of -6 and 4 will make this rational expression undefined.

5 0
3 years ago
In a survey one-forth like cake only and 20 didn't like cake at all. Also 50% children like ice cream but 12 like none of them.H
Rudiy27

Answer:

2

Step-by-step explanation:

Let x represent the total number of people. Let C represent those that like cake and let I represent those that like ice cream. Given:

C = (1/4)x = 0.25x, I = 0.5x, (C ∪ I)' = 12, C' = 20

Therefore:

C ∩ I' = C' - (C ∪ I)' = 20 - 12 = 8

C ∩ I = C - C ∩ I' = 0.25x - 8

C' ∩ I = I - C ∩ I = 0.5x - (0.25x - 8) = 0.25x + 8

The total students = (C ∩ I) + (C' ∩ I) + (C ∩ I') + (C ∪ I)'

x = 0.25x - 8 + 0.25x + 8 + 8 + 12

x = 0.5x + 8 + 12

x = 0.5x + 20

0.5x = 20

x = 40

Students that liked both = C ∩ I = 0.25(40) - 8 = 2

4 0
2 years ago
Name the property the equation illustrates 2(-3/9)=(-3/9)2
Alika [10]
Competitive property is the one you need

6 0
3 years ago
Read 2 more answers
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