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lisov135 [29]
4 years ago
13

What is the value of x in the equation x – y = 30, when y = 15

Mathematics
2 answers:
olga55 [171]4 years ago
8 0
  x - y = 30
x - 15 = 30
  + 15  + 15
      x = 45
Mekhanik [1.2K]4 years ago
6 0
The answer is 45 because 45-15=30, therefore x=45.
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Which equation can be used to find the value of x?
Dafna11 [192]

Answer:

C

Step-by-step explanation:

We know every triangle equals 180 so were just going to take 180 - 42 = 138 then were going to do 138 - 67 = 71  we can check our work by doing

42 + 67+ 71 = 180. We also know 67 + 42 = 109.

Lets look at our answers;

A. 109 = 180 + x  When solved it gave me; x = -71. We got a positive 71 so this is incorrect.

B. x + 42 = 67   When solved it gave me;  x = 25, which is incorrect.

C. x = 180 - 109 When solved it gave me; x = 71

D. 42 + 67 - x = 180 When solved it gave me; x =  - 71

Therefore the answer is C.

6 0
3 years ago
The points (-1.6, 2.7) and (3.2, 7.98) are on the graph of a linear relationship between two variables, r and y.
Aleksandr [31]

Answer:

  y = 1.1x +4.46

  y = 129.86 for x = 114

Step-by-step explanation:

The two-point form of the the equation for a line is useful for this.

  y = (y2 -y1)/(x2 -x1)(x -x1) +y1

  y = (7.98 -2.7)/(3.2 -(-1.6))(x -(-1.6)) + 2.7

  y = 5.28/4.8(x +1.6) + 2.7

  y = 1.1x +1.76 +2.7

  y = 1.1x +4.46

__

When x=114, the value of y is ...

  y = 1.1(114) +4.46

  y = 129.86

6 0
3 years ago
Which is the graph of f(c)=3(2/3)
Assoli18 [71]

This should be the correct answer. I recommend Desmos.

4 0
4 years ago
What is (528^5 x 2419^9)^6 - 328?
damaskus [11]

Answer:

Exact Form:

(41036433850368 ^6  x  2419 ^54 )− 328

Decimal Form:

2.48516121  x  10 ^264

6 0
3 years ago
Bryan cut two peaches. he cut one into sixths and one into fourths.bryan ate 5sixths of the first peach and his brother ate 3fou
Oduvanchick [21]
Bryan : 5/6 = 20/24
Brother : 3/4 = 18/24
Answer Bryan ate more
4 0
3 years ago
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