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adoni [48]
3 years ago
13

How to subtractat a positive and negative rational number

Mathematics
1 answer:
Anna71 [15]3 years ago
5 0

Answer:

<em>75</em>

Step-by-step explanation:

Subtracting a number means adding the opposite.

The opposite of a number is the number you obtain by just changing the sign.

The opposite of 5 is -5. The opposite of 100 is -100. The opposite of -4.5 is 4.5. The opposite of 0 is 0. Zero is the only number that is equal to its opposite.

You need to subtract -45, so add the opposite of -45 which is 45.

30 - (-45) = 30 + 45 = 75

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I WILL GIVE YOU BRAINLIEST!!
ollegr [7]

Answer:

32 goldfish

Step-by-step explanation:

Given:

  • Number of fish tanks = 8
  • Volume of water per fish tank = 5,544 in³
  • Water required by 1 goldfish = min 1,386 in³

Number of fish per tank = water per tank ÷ water per goldfish

                                        = 5544 ÷ 1386

                                        = 4

Therefore, each tank can hold a maximum of 4 goldfish.

Greatest number of goldfish = number of tanks × fish per tank

                                               = 8 × 4

                                               = 32

3 0
2 years ago
Anyone know whats 9 + 10 ??
Zarrin [17]

Answer: 21

Step-by-step explanation:

ahaha but for real it is 19

6 0
3 years ago
Which equation is true for the value b = 2?
Doss [256]
C is the correct answer
6 0
3 years ago
Read 2 more answers
Solve the equation with the problem set {-28,-8,8,28} |10-x|=18
Elden [556K]

Answer:

{-8,28}

Step-by-step explanation:

|10-x|=18

The absolute value has two solutions, one positive and one negative.

10-x = 18   and 10-x = -18

Subtract 10 from each side

10-10-x = 18-10     10-10-x=-18-10

-x = 8                     -x = -28

Multiply each side by -1

x = -8                      x = 28

8 0
3 years ago
Show the work of 6.2 +3.4
Musya8 [376]

Answer:

9.6

Step-by-step explanation:

When we are adding decimals we try 2 add them like normal integers, but in the end we add the decimal in the same place as it was in the beginning

so 62+34=96 and there's a decimal in the tenths place so its 9.6

8 0
3 years ago
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