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olga2289 [7]
1 year ago
7

Sinª A cosec² A+ cos4 A sec² A = 1

Mathematics
1 answer:
12345 [234]1 year ago
4 0

Step-by-step explanation:

sin4Acosec2A+cos4Asec2A=sin2Asin4A+cos2Acos4A=sin2A+cos2A=1

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Charlie wants to order lunch for his friends hell order 6 sandwiches and a $2 kids meal for his little brother Charlie has $32 h
padilas [110]

Answer:

Charlie spent 5$ per sandwich

Step-by-step explanation:

He ordered 6 sandwiches

6x5 =30

He spent 2$ on kids meal

30+2 = 32$

Hope this helped, if you want please mark branliest it would be appreciated

3 0
3 years ago
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What percentage of 2300 is 411
valina [46]
2300÷100=23

411÷23= 17.87

final answer is 17.87℅
7 0
3 years ago
If f(x) = 3x^2 – 2x + 4 and g(x) = 5x^2 + 6x – 8, find (f - g)(x).
meriva

Answer:

-2x^2-8x+12

Step-by-step explanation:

f-g=(3x^2-2x+4)-(5x^2+6x-8)=3x^2-2x+4-5x^2-6x+8=\\ =-2x^2-8x+12

5 0
3 years ago
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Write the expanded form of the expression. 7(2x + y)
MAVERICK [17]

Answer:

14x+7y

Step-by-step explanation:

7 0
3 years ago
Step by step<br> Please urgent
kotegsom [21]

Answer:

Below in bold.

Step-by-step explanation:

1) ( a^2 + b^2 = (a + b)^2 - 2ab

= 29 - 2(6)

= 29-12

= 17.

2).  (x - y)^2 = x^2 + y^2 - 2xy

so 20 = 18 - 2xy

2xy = 18-20 = -2

xy = -1.

3). 1/x + x = 7

(1/ x + x)^2 = 1/x^2  + x^2 +x/x + x/x

= 1/x^2 + x^2 + 2

But(1/x + x)^2 = 7^2 = 49

so 1/x^2 + x^2 + 2 = 49

so 1/x^2 + x^2 = 49 - 2 = 47.

6 0
3 years ago
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