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4 years ago

13

Explain why it is not possible to draw a square that is not a parallelogram

1 answer:

AlexFokin [52]4 years ago

5 0

<span>A square will always be a parallelogram due to the definition of a square.
A parallelogram is a quadrilateral with two pairs of parallel lines. Each two opposite sides are equal and none of the angles is right.
A square is a quadrilateral with 2 pairs of parallel sides, all right angles and all congruent sides.
Since it is part of the definition, it is impossible to have a square that is not a parallelogram.</span>

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How many whole numbers are there, whose squares and cubes have the same number of digits?

Naddik [55]

Answer:

there are only 4 whole numbers whose squares and cubes have the same number of digits.

Explanations:

let 0, 1, 2 and 4∈W (where W is a whole number), then

$0^2=0$ , $0^3=0$ ,

$1^2=1$ , $1^3=1$ ,

$2^2=4$ , $2^3=8$ ,

$4^2=16$ , $4^3=64$ .

You can see from the above that only four whole numbers are there whose squares and cubes have the same number of digits

7 0

3 years ago

Solve 4 - x= -8.<br> A. x= 4<br> B. x= 12<br> C. x= -12<br> D. x= -4

Anna11 [10]

Use math away it’s a really good source

3 0

3 years ago

Read 2 more answers

it's a week before the maths festival a maths exhibition costa £75.40 and so far 12 have been bought. what's the total income so

motikmotik

£75.40*12= £904.80

A quick multiplication

6 0

4 years ago

Find the equation for the circle with center (4,3) and passing through (2,-4)

notsponge [240]

Answer:

$(x - 4)^{2} + (y - 3)^{2} = 53$

Step-by-step explanation:

The general equation of a circle is as follows:

$(x - x_{c})^{2} + (y - y_{c})^{2} = r^{2}$

In which the center is $(x_{c}, y_{c})$ , and r is the radius.

In this problem, we have that:

$x_{c} = 4, y_{c} = 3$

So

$(x - 4)^{2} + (y - 3)^{2} = r^{2}$

Passing through (2,-4)

We replace into the equation to find the radius.

$(2 - 4)^{2} + (-4 - 3)^{2} = r^{2}$

$4 + 49 = r^{2}$

$r^{2} = 53$

The equation of the circle is:

$(x - 4)^{2} + (y - 3)^{2} = 53$

7 0

3 years ago

The diagram shows a sketch of a survey done by a civil engineering student .Find the value of x,giving your answer correct to 1

Hatshy [7]

You can do this by drawing one line through parallel to PQS to meet RQ at T

Now calculate length of RT:-

cos 70 = RT / 70 giving RT = 23.94m

sin 70 = ST/70 giving ST = 65.78 m

draw a line from S perpendicular to PQ to meet PQ at U.

PU = 110 - 65.78 = 44.22 m

tan 50 = SU / 44.22 giving SU = 52.70 m

TQ = SU = 52.70 m

So x = TQ + RT = 52.70 + 23.94 = 76.6 m to 1 dec place.

7 0

3 years ago