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3 years ago

Find the total surface area of the prism pictured.

Mathematics

1 answer:

marysya [2.9K]3 years ago

5 0

Answer:

choice 2) area = 319.2 in²

Step-by-step explanation:

triangular ends = 6.9 x 8 = 55.2

sides = 3 x 8 x 11 = 264

264 + 55.2 = 319.2 in²

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12. Use a trigonometric ratio to find the measure of O in the triangle below. Give your answer to the nearest degree.

larisa [96]

Given :-

A right angled triangle with two sides 10cm and 9cm .

To Find :-

The value of theta .

Solution :-

At angle theta , 9cm side will be considered as the perpendicular and 10cm side will be hypotenuse . So , as we know that ;

$\longrightarrow sin\theta =\dfrac{perpendicular}{hypotenuse}$

Substituting the respective values,

$\longrightarrow sin\theta =\dfrac{9cm}{10cm}$

Simplify,

$\longrightarrow sin\theta= 0.9$

Take arcsin both sides ,

$\longrightarrow \theta =sin^{-1}(0.9)$

$\\\longrightarrow\underline{\underline{\theta = 64.15^o }}$

Hence the required answer is 64.15° . 

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2 years ago

Represent 5x>-3 on a number line

BaLLatris [955]

GIVE BRANLIEST LOOK AT IMAGE THE ANSWER IS ON THAT IMAGE TRUST ME

Step-by-step explanation:

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3 years ago

What are the rules for adding and subtracting negative numbers?

Alexeev081 [22]

A negative sign and a negative sign next to each other is a positive sign ex..

-14 - -3
= -14 + 3
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a negative sign and a positive sign next to each other is a positive sign ex..

-14 + -3
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= -17

the bigger a negative number the smaller it is
the bigger a positive number the larger it is
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3 years ago

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Reptile [31]

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2 years ago

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pav-90 [236]

Answer:

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Step-by-step explanation:

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