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Inga [223]
4 years ago
7

Veronica wants to check her work after evaluating Negative 108 divided by (negative 6). What steps can she follow to verify her

answer?
Mathematics
2 answers:
GalinKa [24]4 years ago
5 0

Answer:

The answer to your question is 18

Step-by-step explanation:

Process

1.- Write the fraction given

              \frac{-108}{-6}

2.- Divide the numbers as usual

               18

         6  108

               48

                 0

3.- Divide the signs

      negative / negative = positive

4.- Write the answer

        \frac{-108}{-6}= 18

5.- Check the result

Multiply 18 by -6 and the result must be -108

       -6 x 18 = 108

guajiro [1.7K]4 years ago
4 0

We know a negative times a negative is equal to a positive.

- 108 / - 6      is the same as 108 / 6     because the larger number is on top.

Therefore she can drop the negative signs and solve 108/6 to verify her answer.

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A collection of quarters and dimes is worth $12.40. There are 67 coins in all.
padilas [110]
Let:
x= quarters
y= dimes


x+y=67
and
.25x+.10y=12.40

x=67-y

.25(67-y)+.10y=12.40
16.75-.25y+10y=12.40
16.75-.15y=12.40
Lets rearrange this:
-.15y+16.75=12.40
        -16.75    -16.75
-.15y=-4.35
the negatives cancel out
.<u>15y</u>=<u>4.35
</u>.15<em /><em>     <u /></em>.15
y=29

Back to the original x=67-y
x=67-29
x=38

So,
x=38
y=29
<em />
5 0
4 years ago
-x -7y = 14<br> -4x -14y =28
koban [17]

Given:

\to \bold{-x -7y = 14}\\\\\to \bold{-4x -14y =28}\\\\

To find:

\bold{x \ and \ y}=?

Solution:

\to \bold{-x -7y = 14}..................... (i) \\\\\to \bold{-4x -14y =28} .................(ii)\\\\

Solving the equation (i):

\to \bold{-x -7y = 14} \\\\  \to \bold{-x=  14+7y} \\\\    \to \bold{x= - (14+7y)} \\\\

Putting the value of x into the equation (ii):

\to \bold{-4(-(14+7y)) -14y =28} \\\\\to \bold{4(14+7y) -14y =28} \\\\\to \bold{56+28y -14y =28} \\\\\to \bold{56+14y =28} \\\\\to \bold{28+14y =0} \\\\\to \bold{14y =-28} \\\\\to \bold{y =\frac{-28}{14}} \\\\\to \bold{y =-2} \\\\

Putting the value of y into the equation (i):

\to \bold{-x -7(-2) = 14}\\\\\to \bold{-x +14 = 14}\\\\\to \bold{-x  = 14-14}\\\\\to \bold{x  = 0}\\\\

So, the value of \bold{x=0 \ and\  y= -2}\\\\

Learn more:

brainly.com/question/10151402

7 0
3 years ago
A project is graded on a scale of 1 to 5. If the random variable, X, is the project grade, what is the mean of the probability
kirza4 [7]

Complete question:

A project is graded on a scale of 1 to 5. If the random variable, X, is the project grade, what is the mean of the probability

distribution below?

Grade(X)_____ 1_____2_____3_____4_____5

Frequency____3 _____5____ 9 ____ 5 ____ 3

P(X) : _______ 0.1 ___0.2 ___0.4 ___ 0.2 __0.1

Answer:

3

Step-by-step explanation:

Given the probability distribution :

Grade(X)_____ 1_____2_____3_____4_____5

Frequency____3 _____5____ 9 ____ 5 ____ 3

P(X) : _______ 0.1 ___0.2 ___0.4 ___ 0.2 __0.1

The mean of the distribution :

Σ(X * P(X)) :

(1*0. 1) + (2 * 0.2) + (3 * 0.4) + (4 * 0.2) + (5 * 0.1)

0.1 + 0.4 + 1.2 + 0.8 + 0.5

= 3

7 0
3 years ago
20 POINTS!!!!!
inn [45]

Answer:

D'accord. Ainsi, la flèche ou le pointeur doit pointer dessus. Si ne pointe pas, que. Découvrez-le

7 0
3 years ago
How can i ask questions ?​
xxMikexx [17]
Lol Ngolo Kante
I can see u re a Chelsea fan
5 0
3 years ago
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