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swat32
2 years ago
9

Can anyone help me solve this?​

Mathematics
2 answers:
erma4kov [3.2K]2 years ago
8 0

\\ \rm{:}\rightarrowtail sin^245°-tan^260°+cos^290°

  • sin45=1/√2
  • tan60=√3
  • cos90=1

\\ \rm{:}\rightarrowtail (\dfrac{1}{\sqrt{2}})^2-(\sqrt{3})^2+(0)^2

\\ \rm{:}\rightarrowtail \dfrac{1}{2}-3+0

\\ \rm{:}\rightarrowtail 1/2-3

\\ \rm{:}\rightarrowtail -5/2

Likurg_2 [28]2 years ago
3 0

Answer:

  • - 2.5

Step-by-step explanation:

  • sin²45° - tan²60° + cos²90° =
  • (√2/2)² - (√3)² + 0² =
  • 1/2 - 3 + 0 =
  • 0.5 - 3 =
  • - 2.5
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The question is incomplete! Complete question along with answer and step by step explanation is provided below.

Question:

Lydia is at a coffee shop and knows  she can spend no more than $65

before tax. She sees this price list in  the coffee shop.

Dark Roast Coffee    $7.50

Pumpkin Spice Coffee   $10.50

Breakfast Tea   $23.50

if Lydia buys 1/2 pound of the Breakfast Tea and 2 pounds of the Dark Roast coffee, how many 1- pound bags of Pumpkin Spice coffee can she buy?

Given Information:

Shopping Budge = $65

Price of   Dark Roast Coffee = $7.50

Price of Pumpkin Spice Coffee  = $10.50

Price of  Breakfast Tea  = $23.50

Amount of Breakfast Tea required = 1/2 pound

Amount of Dark Roast coffee required = 2 pounds

Required Information:

How many 1-pound  Pumpkin Spice Coffee can she buy = ?

Answer:

n = 3 bags of 1-pound Pumpkin Spice Coffee

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Cost of Dark Roast coffee = 2*7.50

Cost of Dark Roast coffee = $15

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Since bags cannot be in fraction so

n = 3 bags

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