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rewona [7]
3 years ago
5

Someone please come fast

Mathematics
1 answer:
lorasvet [3.4K]3 years ago
3 0
The reciprocal of a number is the number you get when you divide -1 by the origonal number exg

basically the reciprocal of the number, when multiplied by the origonal number, the result is -1 so

fractions are really easy because what you do for fractions is you flip the fraction then multiply by -1

 2/9
flip
9/2
multiply -1
-9/2
the answer is A


-9/2
flip
-2/9
mulltply -1
2/9
the naswer is C


9/2
flip
2/9
multiply -1
-2/9
the answer is B

-2/9
fliip
-9/2
mltily -1
9/2
the answer is D

the order is ACBD
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Please help with 6 and 7
Ilya [14]

Answer:

6. The number is -5

7. The two numbers are 10 and 11

Step-by-step explanation:

Question six can be re-worded to create the following expression:

-2=\frac{4x+10}{5}

Solve for x to find the number:

-2=\frac{4x+10}{5}\\-10=4x+10\\-20=4x\\\frac{-20}{4} = x\\-5 = x

Question seven can be solved by first listing the constraints (assuming x is smaller than y):

  1. x and y are less than 20
  2. x + 1 = y
  3. 3x - 8 = 2y

To get the numbers, we can create a system of linear equations. First, solve for y in each expression:

y = x+1

2y = 3x-8\\y = \frac{3}{2}x - 4

Solve for x:

x+ 1 = \frac{3}{2}x - 4\\x + 5 = \frac{3}{2}x\\5 = \frac{3}{2}x - x\\5 = \frac{1}{2}x\\10 = x

Solve for y:

y = x + 1\\y = 10 + 1\\y= 11

4 0
2 years ago
Read 2 more answers
Helppppppp pleaseeee
pochemuha

Answer:

-5

Step-by-step explanation:

a= -4 than 2 times-4. than be 8.and 4 square is -16. So it be 3+8-16 = -5

5 0
2 years ago
Read 2 more answers
What is the slope and y-intercept of y = 4x
Sphinxa [80]

Answer: Slope: 4 Y-intercept: 0

Step-by-step explanation:

8 0
3 years ago
Order the set of numbers from least to greatest 64 8 1/7 8.14 15/2
Marianna [84]

Answer:

Step-by-step explanation:

1/7 15/2 8 8.14 64

4 0
3 years ago
Andrea has some money. Her brother gives her 7 coins worth 23 cents and now she has 73 cents. If she started with 5 coins, what
Nat2105 [25]

Andrea had 5 coins worth 50 cents ! And , thereafter her brother gave her 7 coins worth 23 cents .

<u>Step-by-step explanation:</u>

Here we have , Andrea has some money. Her brother gives her 7 coins worth 23 cents and now she has 73 cents. If she started with 5 coins, We need to find what coins did Andrea's brother give her and what coins did Andrea start with. Let's find out:

Andrea has some money  , and her brother gives her 7 coins ! worth 23 cents . So , 1 coin worth is :

⇒ \frac{23}{7}

⇒ 3.29cents

Now , she had a total of 73 cents i.e.

⇒ 73 = x+23

⇒ x=50

Initially Andrea had 5 coins worth 50 cents ! And , thereafter her brother gave her 7 coins worth 23 cents .

3 0
3 years ago
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