A bag contains an equal number of blue, green, pink, and red balls. If a ball is chosen at random 200 times, with replacement,

If a is a negative number, then a(1/a) is equal to -1. If a is a negative number and b is a negative number, then product ab is

Firdavs [7]

Both claims are false. In fact, $a$ and $\frac{1}{a}$ are one the multiplicative inverse of the other. This means, by definition of multiplicative inverse, that

$a \cdot \dfrac{1}{a} = 1 \quad\forall a \in \mathbb{R}$

So, it doesn't matter if $a$ is positive or negative: the multiplication of one number and its inverse will always be 1: for example,

$(-2) \cdot \dfrac{1}{-2} = \dfrac{-2}{-2} = 1$

Similarly, when you multiply two number, the sign of the product depends on the sign of the factors as follows:

$(+) \cdot (+) = (+)$
$(+) \cdot (-) = (-)$
$(-) \cdot (+) = (-)$
$(-) \cdot (-) = (+)$

So, the multiplication of two negative numbers is a positive number.

8 0

3 years ago

4-5 of the money collected from a fundraiser was dived equally among 8 grades.What fraction of money did each grade receive

allsm [11]

If you are just dividing percent's, then each grade would have 12.5 percent.

4 0

3 years ago

Diego’s dog weighs more than 10 kilograms and less than 15 kilograms. Select the set of inequalities that must be true if w is t

hichkok12 [17]

Answer:

Step-by-step explanation:

Correct

w > 10

Incorrect

w < 10

Incorrect

w > 11

Incorrect

w < 11

Correct

w < 15

w < 15Correct

w > 10

Incorrect

w < 10

Incorrect

w > 11

Incorrect

w < 11

Correct

w < 15

w < 15Correct

w > 10

Incorrect

w < 10

Incorrect

w > 11

Incorrect

w < 11

Correct

w < 15

w < 15Correct

w > 10

Incorrect

w < 10

Incorrect

w > 11

Incorrect

w < 11

Correct

w < 15

w < 15Correct

w > 10

Incorrect

w < 10

Incorrect

w > 11

Incorrect

w < 11

Correct

w < 15

w < 15Correct

w > 10

Incorrect

w < 10

Incorrect

w > 11

7 0

3 years ago

Put the following fractions in order from greatest to least:

kifflom [539]

C,B,D,A

8/4= 2
4/3= 1 1/3
7/5 = 1 2/5
7/10 cant be simplfied at all

5 0

3 years ago

-3 + x = 7.2; x =<br> -4w=-10;w=

inna [77]

Answer:

X=10.2

w= 10/4 or w= 5/2

Step-by-step explanation:

4 0

2 years ago