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kumpel [21]
3 years ago
6

Identify the rational numbers as positive or negative.

Mathematics
1 answer:
N76 [4]3 years ago
4 0

Answer:

Step-by-step explanation:

We have to follow these rules:

+/+ = +

-/- = +

+/- = -

-/+ = -

so

positive numbers:

+2/+3 ; -2/-3 ; -1/-3 ; +1/+3

negative numbers:

+2/-3 ; -2/+3 ; -1/+3 ; +1/-3

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The canadian $2 coin has a diameter of 28 mm. To the nearest 0.01 mm, what is the circumference of this coin? Use 3.14 for pi
Kisachek [45]

Answer:

87.92

Step-by-step explanation:

c = \pi \: \times d

c= Circumference

d= Diameter

3.14 \times 28 = 87.92

4 0
4 years ago
The distance between -18 and 15 is equal to a. 18-15 b. -18-15 c. 15-18 d. 15-(-18)
Feliz [49]

Answer:

d. 15-(-18)

Step-by-step explanation:

Take the second point and subtract the first point

15 - (-18)

15 + 18

33

6 0
3 years ago
I really need help on this 8th grade geometry
wariber [46]
The answer is 39 degrees <span />
5 0
3 years ago
Someone please help me with my homework!!
Gekata [30.6K]

Answer:

is it 8.75 ?

Step-by-step explanation:

-4 5

---- ---- = (7×5) ÷4

7 x

8 0
3 years ago
VERY IMPORTANT!! PLEASE ANSWER CORRECTLY!!
jolli1 [7]

Answer:

x^2-4x+8

x^2+4

x^2+2x+2

Step-by-step explanation:

(1) (x-2+2i) (x-2-2i)

Multiply each term inside second parenthesis

x^2-2x-2ix -2x+4+4i+2ix-4i-4i^2

Combine like terms. the value of i^2=-1

x^2-4x+4-4(-1)

x^2-4x+8

(2) (x+2i)(x-2i)

x^2- 2ix +2ix -4i^2

Replace i^2 by -1  

x^2+4

(3) (x+1+i)(x+1-i)

Multiply each term inside second parenthesis

x^2+x-ix+x+1-i+ix+i-i^2

Combine like terms. the value of i^2=-1

x^2-4x+4-4(-1)

x^2+2x+2




8 0
3 years ago
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