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uranmaximum [27]
4 years ago
9

Please help Solve 2x^2 + x - 4 = 0​

Mathematics
1 answer:
Effectus [21]4 years ago
4 0

Answer:

x = (-1+√33)/4 or x = (-1-√33)/4

Step-by-step explanation:

Use Quadratic formula with a=2, b=1, c=-4

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The blue shape is a dilation of the black shape. What is the scale factor of the dilation?
antiseptic1488 [7]

Answer:

x and y values are doubled; scale factor is 2

Step-by-step explanation:

(4,5) becomes (8,10)

(2,5) becomes (4,10)

(1,4) becomes (2,8)

8 0
3 years ago
Please i need this done
ohaa [14]

Answer:

<em>if Petra uses a scale of 1 in = 50 miles, the distance of 400 miles would fit in the page.</em>

Step-by-step explanation:

<u>Scaling</u>

Objects can be represented in a reduced or augmented size by using scaling.

Scaling is essentially multiplying or dividing by a constant factor. We use scaling when representing geographic locations on a map.

Petra has a piece of paper that is 8.5 inches wide and 11 inches long and she wants to represent a distance of 400 miles by using the scale factor of 1 inch= 20 miles.

a)

Dividing the real distance by the scale factor we get 400/20 = 20 inches. Petra would need 20 inches of paper to represent the scaled distance. That distance won't fit in any direction of the paper, so she actually cannot make the scale drawing.

b)

To make the drawing, the distance of 20 inches should fit into the page in any orientation, let's assume it's done across the paper's width of 8.5 inches.

Dividing 400 / 8,5 = 47

This gives us an idea of the appropriate scale factor. We can use a round number like 50. Thus, if Petra uses a scale of 1 in = 50 miles, the distance of 400 miles would fit in the page.

7 0
3 years ago
Why does a difference exist between the mean and the median
vazorg [7]
The mean is like the average and median is the middle numbers
8 0
3 years ago
Read 2 more answers
One algebra question please!
jeyben [28]

Hello from MrBillDoesMath!

Answer:   3x^3    + 6 x^2  - 12 x   (the third choice)

Discussion:

(x^2 + 2x -4) * (3x) =


x^2 (3x) + 2x (3x) -4 (3x)  =


3x^3     + 6 x^2  - 12 x


which is the third choice

Thank you,

MrB

3 0
3 years ago
I need help with the last part
Lyrx [107]

Answer:

ok gimmie a min i will put answr

Step-by-step explanation:

4 0
3 years ago
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