3 years ago

Please help me with this on the image

Mathematics

1 answer:

BabaBlast [244]3 years ago

4 0

Answer:

<h2>a) Obtuse angle </h2><h2>b) Reflex angle </h2>

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Kamila buys a notebook for $1.59 and pens for $0.29 each. She spends $5.07.

emmasim [6.3K]

Answer:

12 pens

Step-by-step explanation:

Let the variable that can be used to determine the number of pens that Kamila bought be represented by n.

Price of a notebook = $1.59

Price a pen = $0.29

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But,

1.59 + 0.29 n = 5.07

So that,

0.29 n = 5.07 - 1.59

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3 years ago

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3 years ago

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Marizza181 [45]

Answer:

f(x) = sec x. tan x

⇔ f(x) = 1/cosx . cosx/sinx

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+) f(x) is decreasing => x will decrease

+) f(x) is concave up => x ∈ (-pi/2; 0)

+) f(x) concave down => x ∈ (0; pi/2)

Step-by-step explanation:

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3 years ago