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Maru [420]
3 years ago
14

I am really confused

Mathematics
1 answer:
Lilit [14]3 years ago
7 0

Answer: she needs a 96

Step-by-step explanation:

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How can I set each side equal to each other?
jekas [21]
RTP: [a tan(u) + b]² + [b tan(u) - a]² = (a² + b²) sec²(u)

Proving LHS = RHS:

LHS = [a tan(u) + b]² + [b tan(u) - a]²

= a² tan²(u) + 2ab tan(u) + b² + b² tan²(u) - 2ab tan(u) + a²
= (a² + b²) tan²(u) + (a² + b²)
= (a² + b²)[tan²(u) + 1]
= (a² + b²) sec²(u), using the identity: tan²(x) + 1 = sec²(x)
= RHS

7 0
3 years ago
X^2+12=40 what number must you add to complete the square?
posledela

Answer:

Step-by-step explanation:

1) If you really meant X^2+12=40, then this simplifies to x^2 = 28, and therefore x = ±√28, or x = ±2√7.

2) If you meant X^2+12x=40:

a) Take half of the coefficient of x:  that would be (1/2)(12), or 6.  

b) Square this result, obtaining:  6² = 36

c) Add this 36 to x^2 + 12x + 40, and then subtract it:  We get:  

x² + 12x + 36 - 36 = 40, or x² + 12x + 36 = 76

We have to add 36, as indicated above, to "complete the square."

4 0
3 years ago
Giúp tớ giải bài toán này với
vampirchik [111]

Answer:

english pls

Step-by-step explanation:

6 0
3 years ago
Whats the missing number
Anuta_ua [19.1K]

Answer:

<h2><u><em>5</em></u></h2>

Step-by-step explanation:

X * 3^2 +2 = 47

X * 9 + 2 = 47

9X = 47 - 2

9x = 45

x = 45 : 9

X = 5

4 0
3 years ago
A room is 3m longer than its width .if the perimeter is 126m. what is the width of the room?
Pavel [41]

▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

The required values are :

Length = 33 m

Breadth (width) = 30 m

solution is in attachment ~

7 0
3 years ago
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