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alexandr1967 [171]
3 years ago
5

Is y = 3x² + 2 a function or not?

Mathematics
2 answers:
podryga [215]3 years ago
8 0
A function would have one Y value for every X value.
 If you replace X with any number and solve the equation there would be a different Y value every time, so this equation is a function.
Mama L [17]3 years ago
8 0
Yes, it's a quadratic function.
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An excavating company charges $300 an hour for the use of a backhoe and $500 an hour for the use of a bulldozer. (part of an hou
Fed [463]

We have that

Cost use of a backhoe----------------------$300 an hour

<span> Estimate for equipment rental each week---------------------$18,400</span>

Total hours operator per week--------------------------------------40

<span> 40*300</span>=$12000---------------------it is the cost per week to use a backhoe

 $12000<$18400  is ok 

<span> The maximum of hours that I can rent </span>a backhoe <span> are 40 hours, since it is the limit of the operator and it do not overcome the total budget </span>

4 0
3 years ago
Question 1 of 12, Step 1 of 1
stellarik [79]

Answer:

325 and 375 mph

Step-by-step explanation:

Given :

Distance between plane A and B = 2800

Recall :

Distance = speed * time

Let speed of A = v1

Speed of B = v2

v1 = v2 + 50

Time taken = 4 hours

Distance = speed * time

Total distance = 2800

2800 = v1 * 4 + v2 * 4

2800 = (4v1) + (4v2)

2800 = 4(v2+50) + 4v2

2800 = 4v2 + 200 + 4v2

2800 = 8v2 + 200

2800 - 200 = 8v2

2600 = 8v2

v2 = 2600/8

v2 = 325 mph

v1 = v2 + 50

v1 = 325 + 50

v1 = 375 mph

8 0
2 years ago
write an equation in general form of the line passing through (3, -5) whose slope is the negative reciprocal of -1/4
IceJOKER [234]
Negative reciprocal means
-1/4 times x=-1 solve for x
multiply both sides by -4/1
x=-4
so slope=-4
y=mx+b
m=slope, b=y intercpet
y=-4x+b
input 3 for x and -5 for y
-5=-4(3)+b
-5=-12+b
add 12 to both sides
7=b
the equation in slope intercept form is y=-4x+7
that is my standard form
another standard form is
y+4x=7
4 0
2 years ago
Use the Quadratic formula to find the solution of the following equation<br>2x^2+3x=2​
Leviafan [203]

Answer:

x=--2 and x=1/2

Step-by-step explanation:

this is the answer in simple form

8 0
3 years ago
Read 2 more answers
HELP ME PLEASE
Darina [25.2K]
X equals 90 because 360 /2=
7 0
3 years ago
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