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White raven [17]
3 years ago
12

9 + (-3) = please explain to me how you got your answer too thanks

Mathematics
2 answers:
saw5 [17]3 years ago
8 0

Answer:

6

Step-by-step explanation:

Simply go three back (or to the left) in the number line.

Marta_Voda [28]3 years ago
4 0
6 because when you add a positive number by a negative number it subtracts the negative from the positive like in this question since your subtracting a positive from a negative you subtract 9 from 3 which is 6
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To the nearest​ millimeter, a cell phone is 72 mm long and 46 mm wide. What is the ratio of the width to the​ length
earnstyle [38]

Answer:

Length = 72 mm

Width = 46 mm

Ratio = 72:46 = 36:23

Step-by-step explanation:

72 and 36 both are divisible by 2. so when we divide them by two we get 36 and 23. we can divide both the sides only with the same number, but 36 and 23 have no common factors. so we leave it here and this is the answer.

5 0
3 years ago
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3 0
3 years ago
If a² + b² = z and ab = y, which of the following is equivalent to 4z + 8y? Show all the steps.
Ivenika [448]

Answer:

The answer to your question is:       (2a + 2b)²

Step-by-step explanation:

a² + b² = z

ab = y

Which is equivalent to 4z + 8y ?

Substitution

                                     4(a² + b²) + 8(ab)

Simplify                        4a² + 4b² + 8ab

Order                            4a² + 8ab + 4b²       It's a perfect square trynomial

Factorize                     (2a + 2b)²

7 0
3 years ago
Read 2 more answers
22x – 54 + 5.736x^4 - 2x^2<br> Standard form
Yuri [45]

Answer:

5.736x^4 - 2x^2 +22x - 54

Step-by-step explanation:

4 0
3 years ago
Is x = 12 a solution to the equation 6 + x = 19
gladu [14]

Answer:

Incorrect.

Step-by-step explanation:

6 + x = 19

Plug in when x = 12

6 + 12 = 19

18 = 19

It is incorrect, so 12 is not a solution.

7 0
3 years ago
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