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pochemuha
3 years ago
9

A student concluded that the solution to the

Mathematics
1 answer:
Nesterboy [21]3 years ago
5 0
<h3>Answer:</h3>

isr=-2. No, i dont agree the student forgot the negative and forgot to dicide the 2 so that the x is by its self.

<h3>Steps:</h3>

first you have to get the 2x by its self.

2x+1+3=0

-1. -1

-3. -3

2×=-4

÷2 ÷2

<h2 />
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A.Calculate the mean,median and mode.(3 points each) 1.)1,2,3,4,5 2.)2,3,4,5,6,6 3.)6,7,5,4,5,6,2,5
zlopas [31]

Answer:

Step-by-step explanation:

1.)1,2,3,4,5

mean=sum of all values/number of values

         =1+2+3+4+5/5

         =15/5

mean=3

Mode :

In the given data, no observation occurs more than once.

Hence the mode of the observations does not exist, means mode=0.

Median

1,2,3,4,5

Middle value is 3 so the median is 3.

2.)2,3,4,5,6,6

mean=sum of all values/number of values

         =2+3+4+5+6+6/6

         =26/6

mean =4.33

Mode

      is that value of the observation which occurs maximum number of times so here mode is 6.

Median

2,3,4,5,6,6

 4+5/2

9/2

median=4.5

3.)6,7,5,4,5,6,2,5

mean=sum of all values/number of values

         =6+7+5+4+5+6+2+5/8

        =40/8

mean =5

Mode

is that value of the observation which occurs maximum number of times so here mode is 5

Median

2,4,5,5,5,6,6,7

5+5/2

10/2

median=5

 

5 0
3 years ago
In an Animal shelter, the ratio of dogs to cats is 5 to 3. There are 25 dogs, how many cats are there?
LekaFEV [45]

Answer: 25:15

Step-by-step explanation: in the ratio 5:3 the 5 is dogs and the 3 is cats you multiply the 5 (aka the dogs) by 5 to get 25 (the amount of dogs in the shelter) when you multiply 3 by 5 you get the amount of cats which is 15, a good way to remember is what you do to one side you have to do to the other. I hope this helps.

7 0
3 years ago
WILL GIVE A BRAINLIEST IF UR 100% CORRECT PLEASE HELP!!
AleksandrR [38]
Plug in the values of the ordered pairs into the equations.

41 = 5(8) + 1
41 = 40 + 1
41 = 41

So, A y = 5x + 1 is the answer.
6 0
3 years ago
Which will be the effect on the vertex of the parabola y = 4x2 + 1, if the equation is changed to y = -4x2 + 1?
Vlad1618 [11]
The Gradient would be negative therefore making it start by going down then up, making a sad mouth. the x intercepts will be the same. Frankly it just flipped upside down. I remember it like if the gradient is positive then happy smile, if its negative then sad smile. Hope I helped.
3 0
3 years ago
Carlos is helping his grandmother make a rug.They have 5 yards of fabric,which is equal to 180 inches.They need an additional of
lesya692 [45]

Answer:

162 inches.

Step-by-step explanation:

Please consider the complete question.

Carlos is helping his grandmother make a rug. They have 5 yards of fabric, which is equal to 180 inches. They need an additional of 4 1/2 yards of fabric to finish the trim. How many inches are in 4\frac{1}{2} yards?

Let us convert 4\frac{1}{2} into improper fraction as:

4\frac{1}{2}=\frac{4\cdot 2+1}{2}=\frac{8+1}{2}=\frac{9}{2}

Now, we will use proportions to solve our given problem as:

\frac{\text{Inches}}{\text{Yard}}=\frac{180}{5}

\frac{\text{Inches}}{\text{Yard}}=36

1\text{ Yard}=36\text{ Inches}

To find number of inches in 9/2 yards, we will multiply 9/2 by 36 as:

\frac{9}{2}\text{ Yards}=\frac{9}{2}\times 36\text{ Inches}

\frac{9}{2}\text{ Yards}=9\times 18\text{ Inches}

\frac{9}{2}\text{ Yards}=162\text{ Inches}

Therefore, there are 162 inches in 4\frac{1}{2} yards.

5 0
3 years ago
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