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Mrrafil [7]
2 years ago
15

Solve pls brainliest

Mathematics
1 answer:
Dominik [7]2 years ago
6 0

Answer:72

Step-by-step explanation:6 x 12=72

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5x2 + 5x + 5 in vocabulary words.
Katen [24]

Answer:

Step-by-step explanation:

five ex square plus five ex plus five

7 0
2 years ago
What is (3x-5)+(-4x+1)
scoundrel [369]

Answer:

-x-4

Step-by-step explanation:

3 0
2 years ago
What is the value of x in the equation 3x-1/9y=18 when y= 27
makkiz [27]

Answer:

x=7

Step-by-step explanation:

3x-1/9(27)=18\\3x-3=18\\3x=18+3\\3x=21\\3x/3=21/3\\x=7

6 0
3 years ago
Read 2 more answers
A spherical balloon with radius r inches has volume defined by the function below. Find a function that represents the amount of
bixtya [17]
<span>v = 4/3*pi*r^3

derivating both sides with respect to t 
dv/dt = 4*pi*r^2*dr/dt
 
when d = 1.7, r = 0.85, and dv/dt = 2:
2 = 4*pi*(0.85)^2*dr/dt
 
thus
dr/dt = 1/(2pi*(0.85)^2)
        =1/(2*3.14*0.85^2)
        =0.22</span><span />
4 0
2 years ago
Prove that<br> 1+cosθ+sinθ/1+cosθ-sinθ = 1+sinθ/cosθ
marusya05 [52]

Step-by-step explanation:

(1 + cos θ + sin θ) / (1 + cos θ − sin θ)

Multiply by the reciprocal:

(1 + cos θ + sin θ) / (1 + cos θ − sin θ) × (1 + cos θ + sin θ) / (1 + cos θ + sin θ)

(1 + cos θ + sin θ)² / [ (1 + cos θ − sin θ) (1 + cos θ + sin θ) ]

(1 + cos θ + sin θ)² / [ (1 + cos θ)² − sin² θ) ]

Distribute and simplify:

(1 + cos θ + sin θ)² / (1 + 2 cos θ + cos² θ − sin² θ)

[ 1 + 2 (cos θ + sin θ) + (cos θ + sin θ)² ] / (1 + 2 cos θ + cos² θ − sin² θ)

(1 + 2 cos θ + 2 sin θ + cos² θ + 2 sin θ cos θ + sin² θ) / (1 + 2 cos θ + cos² θ − sin² θ)

Use Pythagorean identity:

(2 + 2 cos θ + 2 sin θ + 2 sin θ cos θ) / (sin² θ + cos² θ + 2 cos θ + cos² θ − sin² θ)

(2 + 2 cos θ + 2 sin θ + 2 sin θ cos θ) / (2 cos² θ + 2 cos θ)

(1 + cos θ + sin θ + sin θ cos θ) / (cos² θ + cos θ)

Factor:

(1 + cos θ + sin θ (1 + cos θ)) / (cos θ (1 + cos θ))

(1 + cos θ)(1 + sin θ) / (cos θ (1 + cos θ))

(1 + sin θ) / cos θ

3 0
3 years ago
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