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Math and Arithmetic

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Isabel Wiegand

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Cards in this guide (26)
What is negation

Negation is the opposite of something actual or positive. The negation of a true statement will be false. The negation of a false statement will be true.

Who wrote Rip Van Winkle and The Legend of Sleepy Hollow

Washington Irving .
Washington Irving wrote the Legend of Sleepy Hollow.

How do you knit a 8x8 square

Knit a sample first. Cast on and knit with twenty stitches to start, and knit until it's a few inches long. Measure your knitting. Let's say it's four inches wide. Divide twenty stitches by four inches, and that means that for every five stitches you knit, you've got one inch. Multiply that by eight and cast on. Knit until it's eight inches long. You could do the same for centimeters, just measure and calculate in cm.

Show that the diagonals of parallelogram divide it into four triangles of equal area

We know that diagonals of parallelogram bisect each other.

Therefore, O is the mid-point of AC and BD.

BO is the median in ΔABC. Therefore, it will divide it into two triangles of equal areas.

Area (ΔAOB) = Area (ΔBOC) ... (1)

In ΔBCD, CO is the median.

Area (ΔBOC) = Area (ΔCOD) ... (2)

Similarly, Area (ΔCOD) = Area (ΔAOD) ... (3)

From equations (1), (2), and (3), we obtain

Area (ΔAOB) = Area (ΔBOC) = Area (ΔCOD) = Area (ΔAOD)

Therefore, it is evident that the diagonals of a parallelogram divide it into four triangles of equal area.

A triangular plot of land has sides that measure 5 meters 7 meters and 10 meters What is the area of this plot of land to the nearest tenth of a square meter

Area = 16.2 sq metres.

The perimeter of a rectangular garden is 84 feet the length of the garden is twice the width

If the perimeter is 84 feet and the length is twice the width, then the length will be 28 feet and the width will be 14 feet.

V-cube 7 or megaminx

megaminx

How do you Round 222.6 to the nearest tenth

asshoe u put 24 near the hundreds

How many square feet are 51 inches wide x 30 inches long

51 inches wide x 30 inches long = 10.625 square feet.

A diagonal will divide a quadrilateral into two of what figure

Two triangles

Find the equation of the line through the point -3-2 and Parallel to the line 3x plus y equals 4

3x + y = 4

y = -3x + 4 (the slope is -3)

The line that passes through the point (-3, -2) has a slope of -3, since it is parallel to the line with equation 3x + y = 4 (parallel lines have equal slopes).

Using the slpoe -3 and the point (-3, -2) we find the equation of the required line such as

(y - -2) = -3(x - -3)

y + 2 = -3x - 9

y = -3x -11

3x + y = -11

How do you find the value of ''X'' for each pair of similar figures

by multipling

What is the total size of a picture if it is 80 centimeters by 50 centimeters

The picture is 4000 cm2

The SAS Similarity Theorem states that if an angle of one triangle is to an angle of another triangle and if the lengths of the sides including these angles are proportional then the

proportional /congruent

Is All isosceles triangles are similar true or false

false

What describes an indirect proof

Assume a statement true and then show it must be false

What length of the third side of a triangle with sides measuring 3 cm and 5 cm

There are an infinite number of different triangles that all have two sides

measuring 3cm and 5 cm.

The third side can be any length between 2cm and 8 cm.

What is the Exterior Angle Theorem for a Triangle

An exterior angle of a triangle is equal in measure to the sum of the other two interior angles.

Which term best describes a proof in which you assume the opposite of what you what to prove

Proof in which one assumes the opposite of what you have to prove is indirect proof. In indirect proof a person can draw a conclusion from assuming the opposite is true and then find a conclusion.

Two figure have have a similarity ratio of3 7 the area of the larger figure is 98cm what is the are of the smaller figure

42 cm

How many distinct equilateral triangles with a perimeter of 60 units have integer side lengths

There is only one equilateral triangle with a perimeter of 60 units. Its side lengths are integers.

A triangle has sides measuring 2 inches and 7 inches. If x represents the length in inches of the third side which inequality gives the range of possible values for x

5 < x < 9

Is this statement true or false corresponding sides of similar triangles have the same measure

False because although the angles are the same the sides are proportional by ratio to each other.

Where can I find good paving stones

You can get paving stones at Home Depot or most other home stores. They're often used to make a walkway or to decorate a small area in a garden between plants. You can also use them around a patio.

Why

Why should the fine adjustment knob be used only with the HPO

what- A triangle has side lengths 0.87 m and 0.23 m.What is the range of possible side lengths for the third side, x

0.64

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