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Masteriza [31]
3 years ago
10

Cos (a-b) = cos a cos b + sin a sin b for all values of a and b. True or False

Mathematics
1 answer:
Mrrafil [7]3 years ago
3 0

Answer:

Step-by-step explanation:

true

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A cylinder with a radius of 4 yd and a volume of 80yd (find the height)
Afina-wow [57]

Answer:

Height of the cylinder = 1.60yd

Step-by-step explanation:

Volume of a cylinder =

V = πr^2h

V - volume of cylinder

π - 3.142

r - radius of cylinder

h - height of cylinder

We are provided with

V - 80

r - 4

π - 3.142

h - ?

80 = 3.142 * 4^2 * h

80 = 50.272 * h

To find h, divide both sides by 50.272

80/50.272 = 50.272h/ 50.272

1.599 = h

h = 1.60yd

7 0
3 years ago
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Multiply. Write your answer in simplest form. 3 1/3 x 1, 1/7 A. 3 6/21 B. 3 1/21 C. 3 17/21 D. 4 1/21
Radda [10]
The answer is 3 7/21 or 3 1/3 (i don't see the answer choice)
multiplying a number by 1 doesn't change its value so the final answer is still 3 and 1/3.
5 0
3 years ago
Determine if these values form a right triangle. E
LekaFEV [45]

Answer:

They do not.

Step-by-step explanation:

a² + b² = c²    c is the hypotenuse

9² + 12² = 17²

81 + 144 = 289

225  ≠  289

4 0
3 years ago
Is 4/11 a repeating decimal or Terminating
4vir4ik [10]
The answer to your question is : terminating
6 0
3 years ago
If f(x) = 7x-19<br> then f(4)=?
zhenek [66]

Answer:

9

Step-by-step explanation:

given

f(x) = 7x - 19

f(4) = 7 * 4 - 19

= 28 - 19

= 9

7 0
3 years ago
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