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Tanzania [10]
3 years ago
7

If cosx=-3/7, find the value for cos4x

Mathematics
1 answer:
charle [14.2K]3 years ago
6 0

Answer:

cos ( 4 x ) = - 479 / 2401

Step-by-step explanation:

:D

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When completed full a cube shaped container will hold 8000 cubic centimeter of water what is the length of an edge of the contai
tangare [24]
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5 0
3 years ago
The volume of a box of four earrings is 216 cm³ what is the length of one edge of the box
Iteru [2.4K]

Answer:

I’m pretty positive you divide 216 by 4, since that’s the amount of sides a box normally has. The answer would be 54 cubic centimeters. Please let me know if I’m correct, hopefully this helped.

Step-by-step explanation:

4 0
4 years ago
What are the roots of the polynomial equation? (picture below)
Marat540 [252]

Answer:

x = - 9, x = 0, x = 7

Step-by-step explanation:

Given

\frac{1}{2} x(x - 7)(x + 9) = 0 ← in standard form

Equate each factor to zero and solve for x

\frac{1}{2} x = 0 ⇒ x = 0

x - 7 = 0 ⇒ x = 7

x + 9 = 0 ⇒ x = - 9

3 0
3 years ago
Read 2 more answers
Clair collects seashells. At home, she has 15 shells. Every day she brings 3 back to the beach. After 5 days how many seashells
Igoryamba

The equation would be:

y = 3x + 15

1) Table: It is pretty easy to do so, just plug in 0, 1, 2, 3, etc. for x and solve for y

2) graph (find slope): slope would be 3 shells/day that has a y-intercept of 15

3) you already defined the variables

4) 3(5)+15 = 15+15 = 30 seashells

I hope this helps!

5 0
3 years ago
What is the scale factor for the set of similar figures?
Oksanka [162]
k=\dfrac{7}{20}
7 0
3 years ago
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