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Slav-nsk [51]
2 years ago
14

HELP ME PLS IT IS TIMED

Mathematics
1 answer:
Genrish500 [490]2 years ago
6 0
I’m pretty sure it’s B
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A student solved a quadratic equation as shown here:
djverab [1.8K]

Answer:

x = 3/2 or x = -4

Step-by-step explanation:

The identifiable error the students have is that before the left hand side of the equation is factorized, the right hand side value of 12 ought to be brought to the left hand side, leaving a net value of zero on the right hand side. Then whatever is factored  on the left hand side is then equated to zero and then we can find the two values of x after setting each of the individual factors to zero

We proceed as follows;

2x^{2} + 5x = 12\\2x^{2} + 5x - 12 = 0\\2x^{2} + 8x -3x -12 = 0\\2x(x+4) -3(x+4) = 0\\(2x-3)(x+4) = 0\\2x-3 = 0 or x+4 =0\\2x=3 or x=-4\\x = 3/2 or x= -4\\x = 1.5 or- 4

6 0
3 years ago
The Kansas City Chiefs are trying to figure out if there is a relationship between the number of passes thrown by Quarterback Pa
stich3 [128]

The linear regression equation that represents this data is given as follows: y = 22x - 518.

Using this equation, when 38 passes are thrown, the expected yardage is of 318 yards.

<h3>How to find the equation of linear regression?</h3>

To find the regression equation, also called line of best fit or least squares regression equation, we need to insert the points (x,y) in the calculator. These points are given on a table or in a scatter plot in the problem.

In the context of this problem, the input and output are given as follows:

  • Input: number of passes thrown by Patrick Mahomes.
  • Output: number of passing yards obtaining by Mahomes/KC.

The points to be inserted in the calculator are given as follows:

(39, 360), (35, 235), (35, 262), (37, 249), (40, 338).

Hence the equation is given by:

y = 22x - 518.

With 38 passes, the expected yardage is calculated as follows:

y = 22(38) - 518 = 318 yards.

More can be learned about linear regression at brainly.com/question/22992800

#SPJ1

8 0
1 year ago
Chad stop and fill the car with 11 gallons of gas he had driven 308 miles is in the previous 11 gallons of gas how many miles pe
Mrrafil [7]
308 miles per 11 gallons.

You need to find the amount of miles per 1 gallon.

dived the number of miles over gallons.

will look like:

miles
----------
gallons

it will look like for this problem

308
-------
11



308
-------- =28
11



28 miles per 1 gallon
4 0
3 years ago
Lee has a jar of 100 pennies. She adds groups of 10 pennies to the jar. She adds 5 groups. What numbers does she say?
Alenkinab [10]
150 pennies in the jar .
4 0
3 years ago
Nineteen students were invited to michelle's party. Three more boys than girls were invited. How many boys were invited?
bekas [8.4K]
11 boys and 8 girls because you divide it in half the add 2 and subtract 1. That isn't the wy you are supposed to do it but it works and makes since in my head.
7 0
3 years ago
Read 2 more answers
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