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adelina 88 [10]
3 years ago
10

Ivanna received a $70 gift card for a coffee store. She used it in buying some coffee that cost $7.31 per pound. After buying th

e coffee, she had $26.14 left on her card. How many pounds of coffee did she buy?
Mathematics
1 answer:
zzz [600]3 years ago
3 0

the first time in my class or must i forget abt u cos i always indoors and i know ukuthi im not strong so

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Please someone help with that
Maurinko [17]

Answer:

  a) -tan(π/4) = -1

  b) -1/sin(π/3) = -(2/3)√3

Step-by-step explanation:

The given functions are reciprocals of the primary trig functions:

  cot(x) = 1/tan(x)

  csc(x) = 1/sin(x)

The tangent function has a period of π, and is equal to the cotangent of the complementary angle.

__

<h3>a)</h3>

The given angle is an alias of -π/4, so we can write ...

  cot(7π/4) = cot(-π/4) = -cot(π/4) = -tan(π/2 -π/4) = -tan(π/4)

  -tan(π/4) = -1

__

<h3>b)</h3>

  csc(-π/3) = 1/sin(-π/3) = -1/sin(π/3) = -1/(√3/2) = -2/√3

  -1/sin(π/3) = -2√3/3

6 0
2 years ago
Can you help please?!
IrinaK [193]
For the first one, its 86 square in, and the second one is 45 square cm.
6 0
4 years ago
Read 2 more answers
Solve the equation 12x + 6y = 24 for x.
Ulleksa [173]

Answer:

The answer is x=2-(y/2)

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
HELP PLZZZZ !!!!!!!!!!!!
jeyben [28]
The answer to your question is B
4 0
3 years ago
Identify the two prime numbers that are greater than 25 and less than 35
I am Lyosha [343]
Two prime numbers greater than 25 and less than 35.

Let p be a prime that satisfies

25 ≤ p ≤ 35.


The set of prime numbers:

P = {2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, ... }


There are only two prime numbers greater than 25 and less than 35:

Answer: {29, 31}.


Any doubts? Please comment below.


Best wishes! :-)

6 0
3 years ago
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