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mash [69]
3 years ago
12

Plz explain.

Mathematics
1 answer:
slega [8]3 years ago
8 0
Idk, why does the world need problems like this, not like everyone is going to grow up to be a math teacher.
You might be interested in
23 2/5−11 4/5 Enter your answer as a mixed number in simplest form.
oksian1 [2.3K]

Answer:

11 3/5

Step-by-step explanation:

23 2/5-11 4/5

22 7/5-11 4/5

11 3/5

7 0
3 years ago
The coordinates below represent two linear equations. How many solutions does this system of equations have?
AlexFokin [52]
<span>find the equations of the lines in slope-intercept form which is y=mx+b where m=slope b=y intercept
the choices:
0 solutions: means the lines don't intercect at all, meaning same slope but different y intercept or they ar paralell
1 solution: lines intercect in 1 point
2 solutions: curvy line with a straight line thorugh middle
infinetly solutions: same line
 



to find slope you do
slope=(y1-y2)/(x1-x2)
first line is
(-4,8)
(4,6)
(x,y)
x1=-4
y1=8
x2=4
y2=6
subsitute
(8-6)/(-4-4)=2/-8=-1/4
slope=-1/4
subsitute
y=-1/4x+b
subsitute one of the points
(4,6)
x=4
y=6
6=-1/4(4)+b
6=-1+b
add 1 to both sides
7=b
y=-1/4+7

now solve for the other equation


(-1,1)
(3,5)
x1=-1
y1=1
x2=3
y2=5
subsitute
(1-5)/(-1-3)=(-4)/(-4)=4/4=1
y=1x+b
subsitute
(-1,1)
x=-1
y=1
1=1(-1)+b
1=-1+b
add 1
2=b
y=x+2

we have the lines
y=-1/4x+7 and
y=x+2
solve for a common solution
y=x+2 and y=-1/4x+7 therefor
x+2=-1/4x+7
subtract 7 from both sides
x-5=-1/4x
mulitply both sides by -4
-4x+20=x
add 4x to both sides
20=5x
divide both sides by 5
4=x
subsitute
y=x+2
y=4+2
y=6
the soluiton is (4,6)
there is only one solution
the answer is B</span>
8 0
3 years ago
What is the turning point of this function?
ELEN [110]
Absolute value functions are v-shaped. I hthink the turning point you're referring to is the vertex. This is where the inside of the absolute value is zero.

f(x) = |x+2|
0 = x+2
-2 = x

vertex (-2,0)
7 0
3 years ago
15 POINTS HELP!! Identify the y-intercept for the line of the equation below. Show your work
Inessa05 [86]
8x-2y=12
-2y=-8x+12
y=4x-6
y=4(0)-6
y=-6

(0,-6)
4 0
3 years ago
Can anyone help i don’t know how to do it and it’s GEMDAS not PEMDAS?
Maurinko [17]
ItS PEMDAS not GEMDAS bro
4 0
3 years ago
Read 2 more answers
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