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Elena L [17]
3 years ago
10

I need help. trying to solve this.

Mathematics
1 answer:
kkurt [141]3 years ago
8 0
You can use this formula
{x}^{2}  + (a + b)x + ab
a and b are the solutions to the equation

{x}^{2}  + ( -  \frac{2}{5}  +  \frac{1}{3} )x + ( -  \frac{2}{5}  \times  \frac{1}{3} ) = 0 \\  {x}^{2}    -  \frac{1}{15}x  -  \frac{2}{15}  = 0
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Graph y= –3x+4 <br> please help me
Inessa [10]
<span>This tells us two things. Our slope is 3 and our y intercept is -4. 
This tells us that we need to start at (0,-4). 
Plot that point. 
Since our slope is 3 (3/1), move up 3 and right 1. 

This you will end up at point (1,-1). 
Connect these two points in a straight line, and you have graphed your line.
It will look like this</span>

6 0
3 years ago
Read 2 more answers
I will give you brainliest, 5 stars, and a thanks! Plus ten points please answer quickly!!
svlad2 [7]

Pre-Image:

(-4, 2), (4, 2), (-3, -1), (3, -1)

Image:

(-8, 4), (8, 4), (-6, -2), (6, -2)

6 0
2 years ago
A line of best fit is f(x) ≈ −0.86x + 13.5 for the set of points in the table
Maurinko [17]

Answer: -2

Step-by-step explanation:

Because it is

7 0
2 years ago
From a group of 13 women and ​12 men, a researcher wants to randomly select 8 women and 8 men for a study. In how many ways can
Fantom [35]

The total number of ways the study can be selected is: 637065

Given,

Total number of women in a group= 13

Total number of men in a group = 12

Number of women chosen = 8

Number of men chosen = 8

∴ the total number of ways the study group can be selected = 13C₈ and 12C₈.

This in the form of combination factor = nCr

                                                     ∴ nCr = n!/(n₋r)! r!

13C₈ = 13!/(13 ₋ 8)! 8!

        = 13!/5!.8!

        = 1287

12C₈ = 12!/(12₋8)! 8!

        = 12!/5! 8!

        = 495

Now multiply both the combinations of men and women

= 1287 × 495

= 637065

Hence the total number of ways the study group is selected is 637065

Learn more about "Permutations and Combinations" here-

brainly.com/question/11732255

#SPJ10

4 0
2 years ago
Please any help is necessary
Ugo [173]

Answer:

Option D. 50 ft

Step-by-step explanation:

we know that

The area of the figure is equal to the area of three rectangles

so

A=18x+(48-36)(32-11)+(18)(32)

A=18x+(12)(21)+(18)(32)\\A=18x+828

Remember that the area is given

A= 1,728\ ft^2

so

18x+828=1,728

solve for x

18x=1,728-828\\18x=900\\x=50\ ft

3 0
3 years ago
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