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3 years ago

Is -27 divided by (-3) positive or negative & how

Mathematics

2 answers:

zloy xaker [14]3 years ago

7 0

Answer:

Step-by-step explanation:

-27/-3

27/3 is 9

each of them have a negative so it stays positive

pochemuha3 years ago

7 0

Answer:

It is positive (9)

Step-by-step explanation:

Negative ÷ negative = positive

Negative ÷ positive = negative

positive ÷ positive = positive

positive ÷ negative = negative

Negative × negative = positive

negative × positive = negative

positive × positive = positive

Positive × negative = negative

If both symbols are the same, it is positive. If one is positive and one is negative (different symbols), it is negative.

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4 years ago

If you have a negative slope how do you graph it?

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4 years ago

You have a jar of marbles with 7 red, 12 blue, 6 yellow, and 9 white. What is the probability of selecting a marble that is not

Schach [20]

Answer:

The probability of selecting a marble that is not red, replacing it and then one that is white is 0.2102

Step-by-step explanation:

Number of red marbles = 7

Number of blue marbles = 12

Number of yellow marbles = 6

Number of white marbles = 9

Total marbles = 7+12+6+9=34

Probability of selecting red marble = $\frac{7}{34}$

Probability of selecting no red marble = $1-\frac{7}{34}=\frac{27}{34}$

Now replacing it one marble is drawn again

So, Probability of getting white marble $=\frac{9}{34}$

So,the probability of selecting a marble that is not red, replacing it and then one that is white = $\frac{27}{34} \times \frac{9}{34}=0.2102$

Hence the probability of selecting a marble that is not red, replacing it and then one that is white is 0.2102

3 0

3 years ago

The front walkway from the street to Pam's house has an area of 250ft^2. Its length is two less than four times its width. Find

OleMash [197]

Answer: the length of the walkway is 30.64ft

The width of the walkway is 8.16ft

Step-by-step explanation:

Since the walkway has length and width, it is rectangular in shape. For a rectangle, the two lengths and two widths are equal. The area is expressed as length, L × Width,W.

The front walkway from the street to Pam's house has an area of 250ft^2. It means that

LW = 250

Its length is two less than four times its width. It means

L = 4W - 2

Substituting L = 4W - 2 into LW = 250, it becomes

W(4W - 2) = 250

4W^2 - 2W- 250 = 0

Using the general formula for quadratic equations,

W = [- b ± √b^2 - 4ac]/2a

a = 4

b = -2

c = - 250

W= [- - 2 ±√-2^2 -4(4 × -250)]/2×4

= (2 ± √4 + 4000)/8

= (2 ±63.277)/8

W= (2 + 63.277)/8 or W = (2 - 63.277)/8

W = 8.16 or W = - 7.91

Since the width cannot be negative, width = 8.16 ft

LW = 250

8.16L = 250

L = 250/8.16 = 30.64 ft

8 0

4 years ago

Read 2 more answers