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Sophie [7]
3 years ago
12

How do you find the answer to this?

Mathematics
1 answer:
Stels [109]3 years ago
3 0

Answer:

  D)  {-1}

Step-by-step explanation:

A rational expression is "not defined" when its denominator is zero. Hence to find values of x that make the expression "not defined," you solve the equation ...

  denominator = 0

  2x +2 = 0 . . . . . . put the actual denominator into the equation

  x + 1 = 0 . . . . . divide by 2

  x = -1 . . . . . . . . subtract 1

The expression is "not defined" for x in the set {-1}.

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The sum of two numbers is 148. The larger number is two less than three times the smaller. What are the two numbers?
Lyrx [107]
Let
x--------->  the larger number
y---------> the smaller number

we know that
x+y=148------> equation 1
x=3y-2------> equation 2

substitute 2 in 1
[3y-2]+y=148--------> 4y=150---------> y=150/4------> y=37.5
x=3y-2----> x=3*37.5-2-----> x=110.5

the answer is
the larger number is 110.5
the smaller number is 37.5
4 0
3 years ago
Read 2 more answers
- (3 x 100) + (7 x 10) + (4 x D) + (2 x 100)​
Vlad1618 [11]

Answer:

70 + 4D

Step-by-step explanation:

- (2 x 100) + (7 x 10) + (4 x D) + (2 x 100)

   - (200) + (70) + 4D + 200

       -200 + 70 +4D + 200

             -130 + 4D + 200

                   70 + 4D

5 0
3 years ago
What is the slope of the line on the graph?<br><br> Enter your answer in the box.
Olenka [21]

Look at points (0, -1) and (1, 5).

m = (y2 - y1)/(x2 - x1) = (5 - (-1))/(1 - 0) = 6/1 = 6

Slope = 6

Answer: 6

6 0
3 years ago
A number is 5 more than 3 times another number. The sum of the two numbers is 33. As an equation, this is written x + 3x + 5 = 3
Cloud [144]

Answer:

x=7, so the smaller number is 7 and the larger number is 21.

Step-by-step explanation:

x=3x+5=33

Let x=3:

(3)+3(3)+5=3+9+5=17, not 33, so x is not 3

Let x=5:

(5)+3(5)+5=5+15+5=25, not 33, so x is not 5

Let x=7:

(7)+3(7)+5=7+21+5=33, so x=7

Let x=9:

(9)+3(9)+5=9+27+5=41, not 33, so x is not 9

Therefore x=7. Because x represents the smaller number, and the larger number is 3 times the smaller number, the smaller number is 7 and the larger number is 3(7)=21.

6 0
3 years ago
Read 2 more answers
Evaluate the expression when x=5 and y=9 <br> X2 + 5y+ 16
7nadin3 [17]
10+45+16
The answer would be 71

8 0
3 years ago
Read 2 more answers
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