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nika2105 [10]
3 years ago
13

What is -1/9 + -5/7​

Mathematics
2 answers:
Lerok [7]3 years ago
8 0

Answer: 52/65

Make the denominator the same fraction and do for both numerator and denominator

Zepler [3.9K]3 years ago
5 0

Answer:

- 52/63

Step-by-step explanation:

- 7/63 + - 45/63 = - 52/63

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Set up a system of linear equations, and then solve for the indicated quantities.
hichkok12 [17]

9514 1404 393

Answer:

  • smaller: -4
  • larger: -1

Step-by-step explanation:

Substituting the given variables into the word problem, we have two equations:

  3x +3y = -15

  6x -3y = -21

Adding these equations eliminates y:

  9x = -36

  x = -4 . . . . divide by 9

Using this in the first equation, we have ...

  3(-4) +3y = -15

  -4 +y = -5 . . . . . divide by 3

  y = -1 . . . . . . . . . add 4

The smaller number is -4; the larger is -1.

7 0
3 years ago
Solve x – 7 > –8.
IgorC [24]
Question 1.

x - 7 > - 8

Adding 7 to both sides, we get:

x - 7 + 7 > - 8 + 7

x > -1

Thus the answer to the inequality is option Fourth.

Question 2.

A number exceeds 66. Let that number be x. The number exceeds 66 means that the number is larger than 66. So in form of an expression we can write the inequality as:

x is greater than 66

x > 66

So, option 1st gives the correct answer.


Question 3.

The tiles are square shaped and area of a square can be calculated as the square of its Length.

Area of square = (Length)²

If we are given the Area, we can find the length as:

Length = \sqrt{Area}

For Tile A, the length will be:

Length= \sqrt{9}=3  
So length is a Rational number

For Tile B, the length will be:

Length= \sqrt{25}=5  
So length is a Rational number

For Tile C, the length will be:

Length= \sqrt{34}  
So, Length is not Rational.

For Tile D, the length will be:

Length= \sqrt{76}  
Length is not Rational

Thus, the lengths of Tile A and Tile B are rational only.

Therefore, the correct answer is 1st option  
8 0
3 years ago
What does the letter p in the symbol 4p3 indicates?
GuDViN [60]
Probability is what the letter p indicates
3 0
3 years ago
Converting Mixed Numbers to Improper Fractions.
andrew11 [14]
Just multiply the denominator and the whole number then add the numerator

23/9
7/2
37/5
16/5
23/4
33/5

The answers are in order you put it in like 1-6

Can I have brainiest please
6 0
3 years ago
Which fraction has a terminating decimal as its decimal expansion?
alex41 [277]
'One third' as a decimal is 1 ÷ 3 = 0.333333..... ⇒ The decimal is recurring

'One fifth' as decimal is 1 ÷ 5 = 0.2 ⇒ The decimal terminates at the tenth value

'One seventh'  as decimal 1 ÷ 7 = 0.142857142857.... ⇒ The decimal is recurring for every digit between 1 and 7

'One ninth' as decimal 1 ÷ 9 = 0.111111.... ⇒ The decimal is recurring 

Answer: one fifth
5 0
3 years ago
Read 2 more answers
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