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Lostsunrise [7]
3 years ago
9

A railroad inspects 360 railcars. if 95% passed, how many cars passed the inspection?​

Mathematics
1 answer:
Cloud [144]3 years ago
5 0
The answer is 342cara
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Which equation could generate the curve in the graph below
Setler79 [48]
The curve has been attached and the answer choices are:

y = 3x² – 2x + 1

y = 3x² – 6x + 3

y = 3x²<span> – 7x + 1
</span>
The attached graph has a vertex in the first quadrant. Therefore, the coordinates of the vertex would be both positive.

Let's start with first equation:

                                               y = 3x² – 2x + 1

using the equation of axis:
                                            x = -b/2a
                                            x = 2/6
                                            x = 1/3
SUbstituting the value of x in the main equation to get the y-coordinate of the vertex.
                                               y = 3(1/3)² – 2(1/3) + 1
                                               y = 3/9 – 2/3 + 1
                                               y = 1/3 – 2/3 + 1
                                               y = (1 - 2 + 3)/3
                                               y = 2/3

Hence, the vertex would be:
                                             (h,k) = (1/3 , 2/3)

Also, the leading coefficient is positive, so the parabola would be concave up.

Thus the final answer choice will be:

                                             y = 3x² – 2x + 1

3 0
3 years ago
Which shows all the names that apply to the figure?
saul85 [17]
The answer is A


A Parallelogram is a shape with 4 sides that has two pairs of parallel sides. The opposite sides must have equal length.  This is accurate for this shape.

A Rectangle is a shape with 4 sides that has four right angles.  This is accurate for this shape.

A rhombus is a shape with 4 sides of equal length.  This is not accurate for this shape.

A square is a shape with 4 sides of equal length and four right angles.  This is not accurate for this shape.
4 0
3 years ago
Alex drives at an average speed that is
densk [106]

Answer:

The answer is 162.5

Step-by-step explanation:

you divide 2 by 3 and then figure out how many examples where given to find the average and multiply by that much and you get the answer.

5 0
2 years ago
HELP ME PLEASE <br> PLEASE PLEASE PLEASE PLEASE PLEASE
Nimfa-mama [501]

Answer:

19y+5

Step-by-step explanation:

Combine like terms look for all the numbers that have y attached and combine them

7y +12y=19y

Look for terms where nothing is attached it's just the number combine them

6-1=5

Put all together again and you get:

19y+5

8 0
3 years ago
A sphere of radius 3 is inscribed in a cylinder. What is the volume inside the cylinder but not inside the sphere?
Fed [463]

Answer:

18pi units³ or 56.5 units³ (3 sf)

Step-by-step explanation:

pi×r²×h - (4/3)(pi×r³)

r = 3 h = 2r = 6

pi(3²×6 - (4/3)(3³))

18pi units³

8 0
3 years ago
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