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a_sh-v [17]
4 years ago
8

Two math classes took the same quiz. The scores of 10 randomly selected students from each class are listed below.

Mathematics
2 answers:
sergeinik [125]4 years ago
7 0

Class B did better than Class A

Because Class B was: 95,90,85,90,100,75,90,85,90,85

Mekhanik [1.2K]4 years ago
5 0
The kids in Class A are smarter than the kids in Class B
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2x+3y=12 x-y=6 solve the following system equations
IgorC [24]

Answer:

(6, 0)

Step-by-step explanation:

There are a few different methods to solve system of equations.  For this problem, you can use substitution by solving one of the equations for a variable and then substituting this expression into the other equation to solve for the remaining variable:

x - y = 6, add 'y' to both sides to solve for 'x':  x - y + y = 6 + y or x = 6 + y

Using the expression '6 + y' for the value of 'x' in the second equation:

2x + 3y = 12 or 2(6+y) + 3y = 12 or 12 + 2y + 3y = 12 or 12 + 5y = 12

Subtract 12 from both sides: 12 + 5y - 12 = 12 - 12 or 5y = 0 so y = 0

Now that you know the value of 'y', you can solve for 'x':

x = 6 + 0 or x = 6

Put the values of 'x' and 'y' into an ordered pair: (6,0).

5 0
4 years ago
Use the quadratic formula to solve the equation
dalvyx [7]
Use photo math because you want calculator help not a human may be bad just use a calculator
8 0
3 years ago
A is the midpoint of line segment PT if PA is 5/3x-2 and TA is 4x-37. What is PT
Afina-wow [57]
The answer is 46
Since A is the midpoint of PA and TA you set both equations to equal each other to find x .
5/3x-2=4x-37
x=15
Then plug in 15 for x
4(15)-37=23
Since PT in both segment added together
23+23 =46
6 0
3 years ago
Wssp here are some pointss
Harlamova29_29 [7]
So kind man so kinda dude
6 0
2 years ago
Solve the equation by completing the square. Round to the nearest hundredth if necessary? X^2+3x=24
Genrish500 [490]
X^2+3x=24, halve the linear coefficient, square it, and add it to both sides

In this case (3/2)^2=2.25

x^2+3x+2.25=26.25 now the left side is a perfect square...

(x+1.5)^2=26.25  take the square root of both sides

x+1.5=±√26.25  subtract 1.5 from both sides

x=-1.5±√26.25

x=-1.5-√26.25 and -1.5+√26.25

x≈ -6.62 and 3.62
6 0
3 years ago
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