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Elza [17]
4 years ago
13

True or false If two planes cross one another, then their intersection is two lines

Mathematics
2 answers:
fredd [130]4 years ago
8 0
THE ANSWER IS TRUE IF THEY CROSS PATHS WITH EACH OTHER THAN YES



patriot [66]4 years ago
4 0

If two planes cross one another, then their intersection is two lines.


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Answer:

In x: 4-1=3

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Step-by-step explanation:

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f we move vertically we must consider only the y axis, if we move to north it is positive, and if we move to south it is negative.

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Marry Emma earned $45.00 babysitting her cousin. She saved $18.50 and spent the remainder. How much did Mary Emma spend?
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Answer:

She spent $26.50

Step-by-step explanation:

subtract $18.50 from $45.00

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3 years ago
What is the area of the triangle?
ArbitrLikvidat [17]

9514 1404 393

Answer:

  7 square units

Step-by-step explanation:

There are several ways the area of triangle EBD can be found.

  • find the lengths EB, BD, DE and use Heron's formula (messy due to roots of roots being involved).
  • define point G at the lower left corner and subtract the areas of ∆DEG and BCD from trapezoid BCGE.
  • figure the area from the coordinates of the vertices.
  • use Pick's theorem and count the dots.

We choose the latter.

__

Pick's theorem says the area of a polygon can be found as ...

  A = i + b/2 -1

where i is the number of grid intersection points interior to the polygon, b is the number of grid points intersected by the border.

The attached figure shows the lines EB, BD, and DE intersect one point in addition to the vertices. So, b=4. A count of the red dots reveals 6 interior points (i=6). So, the area is ...

  A = 6 + (4/2) -1 = 7

The area of ∆EBD is 7 square units.

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3 years ago
Find the inverse of f(x)=x/4-7
kirill [66]

Answer:

fx^{-1} (x)=4x+28

Step-by-step explanation:

6 0
3 years ago
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