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earnstyle [38]
2 years ago
12

Please help me pleasse

Mathematics
2 answers:
snow_tiger [21]2 years ago
7 0
The correct answer is: 75mph
nirvana33 [79]2 years ago
6 0

Answer:

75 mph

Step-by-step explanation:

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Which description does NOT guarantee that a quadrilateral is a square?
Ivahew [28]
Let's go through the choices one by one

------------------------------------------
Choice A

If all sides are congruent, then this figure is a rhombus (by definition). If all angles are congruent, then we have a rectangle. Combine the properties of a rhombus with the properties of a rectangle and we have a square.

In terms of "algebra", you can think
rhombus+rectangle = square

Or you can draw out a venn diagram. One circle represents the set of all rhombuses; another circle represents the set of all rectangles. The overlapping region is the set of all squares. The overlapping region is inside both circles at the same time.

So we can rule out choice A. This guarantees we have a square when we want something that isn't a guarantee.

------------------------------------------
Choice B

If we had a parallelogram with perpendicular diagonals, then we can prove that we have a rhombus (all four sides congruent). However, we don't know anything about the four angles of this parallelogram. Are they congruent? We don't know. So we can't prove this figure is a rectangle. The best we can say is that it's a rhombus. It may or may not be a rectangle. There isn't enough info about the rectangle & square part.

This is why choice B is the answer. We have some info, but not enough to be guaranteed everytime.

------------------------------------------
Choice C

This is a repeat of choice A. Having "all right angles" is the same as saying "all angles congruent". This is because "right angle" is the same as saying "90 degrees". So we can rule out choice C for identical reasons as we did with choice A.

------------------------------------------
Choice D

As mentioned before in choice A, if we know that a quadrilateral is a rectangle and a rhombus at the same time, then the figure is also a square. This is always true, so we are guaranteed to have a square. We can cross choice D off the list.

------------------------------------------

Once again, the final answer is choice B


3 0
3 years ago
Solve 3√18a^2 please show your work
dezoksy [38]
Reduce the index of the artical and exponent with 2 and get 3x18a. Calculate the product and get 54a.
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When is the product of two nonzero integers less than or equal to both of the two factors
aleksley [76]
The answeris equall to because they are the same #
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3 years ago
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Minchanka [31]

Answer:

936

Step-by-step explanation:

3 0
2 years ago
Suppose f(x) = x2 and g(x)= (1/4x)2Which statement best compares the
kodGreya [7K]

Answer:

B.

Step-by-step explanation:

Since the variable <em>b</em> is manipulated in f(x) = a(bx - h)² + k, we are dealing with horizontal compression and stretching. Since b < 1, that means the graph is being horizontally compressed.

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2 years ago
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