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2 years ago

HELP HELP HELP explanation too??

Mathematics

2 answers:

sergeinik [125]2 years ago

7 0

Answer:

4) 96°

Step-by-step explanation:

Supplementary angles add up to 180.

So 180-84=96

scoray [572]2 years ago

4 0

Answer:

answer: 96

Step-by-step explanation:

A supplementary angle adds up to 180 degrees so 96 is the missing angle because

96 + 84 = 180 Hope that helps!

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A giraffe's height is 5 meters 40 centimeters. How tall is the giraffe in millimeters?

nika2105 [10]

Answer:

5400 mm

Step-by-step explanation:

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3 years ago

What is the length of BC , rounded to the nearest tenth?

Arte-miy333 [17]

Step $1$

In the right triangle ADB

Find the length of the segment AB

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we have

$AD=5\ units\\BD=12\ units$

substitute the values

$AB^{2}=5^{2}+12^{2}$

$AB^{2}=169$

$AB=13\ units$

Step $2$

In the right triangle ADB

Find the cosine of the angle BAD

we know that

$cos(BAD)=\frac{adjacent\ side }{hypotenuse}=\frac{AD}{AB}=\frac{5}{13}$

Step $3$

In the right triangle ABC

Find the length of the segment AC

we know that

$cos(BAC)=cos (BAD)=\frac{5}{13}$

$cos(BAC)=\frac{adjacent\ side }{hypotenuse}=\frac{AB}{AC}$

$\frac{5}{13}=\frac{AB}{AC}$

$\frac{5}{13}=\frac{13}{AC}$

solve for AC

$AC=(13*13)/5=33.8\ units$

Step $4$

Find the length of the segment DC

we know that

$DC=AC-AD$

we have

$AC=33.8\ units$

$AD=5\ units$

substitute the values

$DC=33.8\ units-5\ units$

$DC=28.8\ units$

Step $5$

Find the length of the segment BC

In the right triangle BDC

Applying the Pythagorean Theorem

$BC^{2} =BD^{2}+DC^{2}$

we have

$BD=12\ units\\DC=28.8\ units$

substitute the values

$BC^{2}=12^{2}+28.8^{2}$

$BC^{2}=973.44$

$BC=31.2\ units$

therefore

the answer is

$BC=31.2\ units$

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3 years ago

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dmitriy555 [2]

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3 years ago

Which table does not represent a proportional relationship?

bogdanovich [222]

Answer:

A does not have any proportional relationship.

Step-by-step explanation:

All of the other tables have obvious relationships, leaving A to be the answer.

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2 years ago

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