4 years ago

What is the shape of a cross section formed when a triangular prism is sliced by a plane vertical to its base?

Mathematics

1 answer:

Masteriza [31]4 years ago

5 0

maybe it is supposed to be a trapezoid

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How do I solve this equation and check the solutions?

IgorLugansk [536]

<h3>SOLUTION :-</h3>

<u>By squaring on both sides :</u>

$: \implies \sf {\big( \sqrt{20 - 8x} \:\big)}^{2} = x^2 \\ \\$

$:\implies \sf {20 - 8x} = {x}^{2} \\ \\$

<u>Solving quadratic equation :</u>

$: \implies\sf{ {x}^{2} + 8x - 20 = 0 } \\ \\$

$: \implies\sf{ {x}^{2} + (10 - 2)x - 20 = 0 } \\ \\$

$: \implies\sf{ {x}^{2} + 10x - 2x - 20 = 0 } \\ \\$

$: \implies\sf{ x(x + 10) - 2(x + 10 )= 0 } \\ \\$

$:\implies\sf{( x + 10 )(x - 2)= 0 } \\ \\$

$: \implies\sf x + 10 = 0 \: or \: x - 2 = 0 \\ \\$

$: \implies\sf x = 0 - 10\: or \: x = 0 + 2\\ \\$

$: \implies \underline{\boxed{ \bf{x = - 10 \: or \: x = 2}}}$

$\huge {\therefore}$ The roots of this equation are -10 and 2.

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3 years ago

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The diameter of a circle measures 32 yd. What is the circumference of the circle?

Alexxandr [17]

Answer:

100.48yds

Step-by-step explanation:

C= Circumference

π=3.14

R=radius

C=2πr

C=2(3.14)*16

C=6.28*16

C=100.48yds

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3 years ago

a ladder leans against the sufe of a house. the angle of elevation of the ladder is 70 degrees when the bottom of the ladder is

crimeas [40]

Answer:

Step-by-step explanation:

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17 kids have other kinds of pets

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4 years ago

Find the negative square root of twenty

nataly862011 [7]

I'm sorry but the answer to your question is NaN.Check your calculator and u will see

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