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2 years ago

I'm confused please help meeee!! only with #8 ;((((

Mathematics

1 answer:

attashe74 [19]2 years ago

6 0

Order of operations; PEMDAS

Exponents first since there is no parenthesis.

10^2 = 100

100-8+4•3

then multiplication

100-8+12

then addition

100-20=
so your answer is 80

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Two lines intersecting at a right angle

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Answer:

Two lines that intersect and form right angles are called perpendicular lines. The symbol ⊥ is used to denote perpendicular lines.

Step-by-step explanation:

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3 years ago

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Bianca and yoko work together to mow the lawn. suppose yoko mow 5/15 of the lawn and bianca m ows 2/5 of the lawn. how much lawn

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1+secA/sec A = sin^2 A / 1-cos A

Fofino [41]

Answer: see proof below

<u>Step-by-step explanation:</u>

$\dfrac{1+\sec A}{\sec A}=\dfrac{\sin^2 A}{1-\cos A}$

Use the following Identities:

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$\text{LHS:}\qquad \qquad \dfrac{1+\sec A}{\sec A}$

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3 years ago

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Answer:

A. EG = √3 × FG

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Step-by-step explanation:

∵ tan 60 = √3

∵ tan60 = EG/GF

∴ EG/GF = √3

∴ EG = √3 × GF ⇒ A

∵ m∠F = 60°

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∵ sin 60 = EG/EF

∴ √3/2 = EG/EF

∴ EG = √3/2 × EF ⇒ D

∵ cos60 = 1/2

∵ cos60 = GF/EF

∴ GF/EF = 1/2

∴ EF = 2 × GF ⇒ E

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