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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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As a summer job, Bart is picking strawberries at his uncle's farm. He can pick 6
avanturin [10]

Answer:

125

Step-by-step explanation:

All the work is in picture attat

5 0
1 year ago
The city park in which Allen plays is a square and measures exactly one million square feet. Which side dimensions produce the m
valentina_108 [34]
A- 998.8×997.7=996502.76
B- 998.84×997.73=996572.6332
C- 998.843×997.731=996576.6252
D - 999×998=997002

So D is the answer
4 0
3 years ago
What happens to the value of the expression 80-2r as r decreases?
Ghella [55]

Answer:The value of the expression increases as r decreases.

Step-by-step explanation:

To find : What happens to the value of the expression as r decreases?

Given Expression: 80-2r

We check for different value of r as decreasing order,

r        80-2r

5        80-10=70

4        80-8=72

3        80-6=74

2        80-4=76

1         80-2=78

As r decreases the value of expression increases.

Therefore, the value of the expression increases as r decreases.

Hope this helps!

8 0
3 years ago
Read 2 more answers
Peter works part time for 3 hours every day and Cindy works part time for 2 hours every day.
Dmitriy789 [7]

Answer:

a. We can say that P > C, where 'P' represents Peter's earnings and 'C' represents Cindy's earnings.

Given that P = 3h and C = 2h, where h =$4.50. We can say also that 3h > 2h.

b. If Cindy wants to earn at least $14 a day working two hours. Then:

2h ≥  $14

To solve the problem, we just need to solve for 'h':

h ≥ $7

Therefore, se should earn more or equal to $14 per hour.

4 0
3 years ago
Read 2 more answers
3/5 × 6/7 help please
zepelin [54]
Multiply the numerator by the numerator (top number). 
Multiply the denominator by the denominator (bottom number). 

So 3 x 6 = 18 
And 5 x 7 = 35 
= 18/35 
6 0
3 years ago
Read 2 more answers
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