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san4es73 [151]
3 years ago
14

Alfonso and Gracie have decided to join a gym! Gracie found a gym that costs $20 to join and charges $4 per class. Alfonso found

a gym that costs $34 to join but only $2 per class. a. Write a system of equations modeling the Gyms’ charges.
Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
5 0
Basically I can’t give you the answer as that’s cheating and I’m your teacher r
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-5x + 3(7x - 5)<br> Help???
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So here we just are gonna distribute and simplify.

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2 years ago
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A cube has how many vertices
Ulleksa [173]

Answer: 8 vertices

Step-by-step explanation: A cube has 6 square faces. Each segment formed by the intersection of 2 faces is called an edge so a cube has 12 edges. Each point formed by the intersection of 3 edges is called a vertex so a cube has 8 vertices.

3 0
3 years ago
15x (1/3+1/5)<br> I need help with this one also?
love history [14]

Answer:

8

Step-by-step explanation:

15 x (1/3+1/5)  make common denominators and add

15 x (5/15+3/15)  add fractions

15/1 x (8/15)  15 and 15 cancel out and become 1

1/1 x 8/1

1 x 8

8

3 0
3 years ago
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Francesca bought a rectangular piece of fabric that is 2/3 yard long and 3/4 yard wide. What is the area, in square yards, of th
ollegr [7]

Answer:

area \:  = length  \times width \\  =  \frac{2}{3} \times  \frac{3}{4}  \\  =  \frac{(2 \times 3)}{(3 \times 4)}   \\ =  \frac{6}{12}  \\ area =  \frac{1}{2} square \: yards

6 0
3 years ago
Find cos 18, sin 18. cos 3x=sin2x then x=18.
Rzqust [24]
X = 18°
cos 54° = sin 36°
cos 3 x = sin 2 x
cos ( 2 x + x ) = sin 2 x
cos 2 x cos x - sin 2 x sin x = 2 sin x cos x
( cos² x - sin² x ) cos x - 2 sin² x cos x = 2 sin x cos x   / : cos x
                                                                         ( divide both sides by cos x )
cos² x - sin² x - 2 sin² x = 2 sin x
1 - sin² x - 3 sin² x - 2 sin x = 0
- 4 sin² x - 2 sin x + 1 = 0               substitution:  u = sin x
- 4 u² - 2 u + 1 = 0
u = 2 -√20 / - 4        sin 18° =  (√ 5 - 1 )/4 
sin 18 =  \frac{ \sqrt{5} -1 }{4}
cos 18° = √( 1² - ((√5 - 1)/4)²
cos 18° = (10+2√5)^(1/2) / 4

6 0
3 years ago
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