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natita [175]
2 years ago
11

Please answer quick!!​

Mathematics
2 answers:
vesna_86 [32]2 years ago
6 0
Are those X’s or K’s
Debora [2.8K]2 years ago
3 0

Answer:

x = 33 + 11y

Step-by-step explanation:

12x + 13y = 36

13x + 2y = 69

One of the needs to change so that an x or y is the subject of the equation.

36 - 12x = 13y

13x + 2y + 36 - 12x = 69 + 13y

x + 2y + 36 = 69 + 13y

x + 2y + 36 - 36 = 69 + 13y - 36

x + 2y = 13y + 33

x + 2y - 13y = 13y - 13y + 33

x - 11y = 33

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Converting a fraction to decimal
r-ruslan [8.4K]

Answer:

All of them? Pls reply if so!

Step-by-step explanation:

To convert a fraction to a decimal just the divide the bottom into the top.

To convert a decimal into a fraction just put the decimal over 1 or divide the decimal by preference of tenths, hundredths, or thousandth place.



7 0
3 years ago
Will mark barinly______
Lady_Fox [76]

Answer:

x = 13

y = 15

Step-by-step explanation:

ST = DT ( Reason : from given )

5x = 65

x = 65 / 5

x = 13

TY = TU ( Reason : from given )

3y + 5 = 50

3y = 50 - 5

3y = 45

y = 45 / 3

y = 15

8 0
3 years ago
How do i solve this? Please give me step by step explanation.
Viktor [21]

Answer:1.5

Step-by-step explanation:

12.6j + 8 = 10.2j +4.4

2.4j=3.6

j=3.6/2.4= 1.5

3 0
2 years ago
Read 2 more answers
What’s the product (5r+2)(3r-4)
Marrrta [24]
(5r+2)(3r-4) =15r^2-20r+6r-8=15r^2-14r-8
3 0
3 years ago
Read 2 more answers
Eighth grade
Ymorist [56]

Answer:

b = 1

Step-by-step explanation:

Given the equation is:

- 5b + 2b - (-b) + 7 = 5

We separate the terms of b and the constants. To do that we subtract 7 from both the sides. We get:

- 5b + 2b - (-b) + 7 - 7 = 5 - 7

⇒ - 5b + 2b - (-b) = - 2

Now, simplifying the terms with 'b'.

⇒ -5b + 2b + b = - 2

⇒ (-5 + 2 + 1)b = - 2

⇒ -2b  = -2

Dividing both the sides by -2, we get:

b = 1 which is the required answer.

7 0
3 years ago
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