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3 years ago

Can you help prove this identity?

Mathematics

1 answer:

mario62 [17]3 years ago

3 0

Its six idk really ask your teacher for more help

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Solve the equation and enter the value of x below. x-12 = 8 X =

san4es73 [151]

The answer would be X = 20

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3 years ago

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Suppose ABCD is a rhombus with AB = 12 inches. The midpoints of its sides are joined to form a quadrilateral. What type of quadr

MrRissso [65]

Answer:

A rectangle

Step-by-step explanation:

The given parameters are;

The quadrilateral ABCD is a rhombus;

The length of the sides of the rhombus = 12 inches

The lengths of the sides of a rhombus are equal

The opposite interior angles of the rhombus are equal

The length of each midpoint from the vertex = 12 in./2 = 6 in.

Therefore, we have;

The line joining the midpoints form a quadrilateral with the length of the opposite sides equal

The sum of the interior angles of the rhombus = 180°

From the diagram created with Microsoft Visio, we have;

4·a + 4·b + 360 = 4 × 180 = 360 + 360

4·a + 4·b = 360

a + b = 90°

We have;

The interior angles of the quadrilateral formed = x

a + b + x = 180° Sum of angles on a straight line

∴ x = 180° - (a + b) = 180° - 90° = 90°

x = 90°

Therefore, the interior angles of the quadrilateral formed = 90°

The quadrilateral formed having equal opposite sides, and all interior angle of 90° each is a rectangle

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3 years ago

Multiply (3x - 2)(4x - 7).

Verizon [17]

Answer:

Step-by-step explanation:

...............

....

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3 years ago

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isabel thinks she has space for a 45 inch wide book case it turns out she only has space for a 40 inch wide book case what is th

Minchanka [31]

Answer:

The percent error in Isabel's measurement is 12.5%.

Step-by-step explanation:

Given:

Isabel thinks she has space for a 45 inch wide bookcase it turns out she only has space for a 40 inch wide bookcase.

Now, to find the percent error in Isabel's measurement.

Measurement she thinks = 45 inch.

The actual measurement = 40 inch.

So, the error in measurement = $45-40=5\ inch.$

Now, to get the percent error of the measurement:

$\frac{5}{40} \times 100$

$=\frac{500}{40}$

$=12.5\%.$

Therefore, the percent error in Isabel's measurement is 12.5%.

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4 years ago

Emma already has read 6 of 20 books on her summer reading list. What percent of the books on her list has she read already.

ad-work [718]

The answer is 30% because 6 divided by 20 is .3 and .3 x 100% = 30%

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3 years ago

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