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zzz [600]
3 years ago
9

Trig: Use a half angle formula to find the exact value of the expression? cos(5pi/12)

Mathematics
1 answer:
stepladder [879]3 years ago
4 0
I believe that the correct answer would be 0.999739299
5 * 3.14 = 15.7
15.7/12 = 1.308333333
cos(1.308333333)
0.999739299
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Given I=prt,where I=4.5,p =500,and t=2.5,what is r as a percent?
KIM [24]
PLUG in the numbers 
4.5=500 x R x 2.5
divide both sides by 500
0.009=R x 2.5
divide 2.2 to both sides 
R=.0036
In percent you have to multiply by 100 which is 0.36%
8 0
3 years ago
15 + 10y - 4xy - 6 6.​
Verdich [7]

Answer:

Step-by-step explanation:

15+10y−4xy−66

Soustraire 66 de 15 pour obtenir −51.

−51+10y−4xy

4 0
2 years ago
Read 2 more answers
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Oksana_A [137]
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5 0
3 years ago
Image down below if it is correct i will give brainliest
inysia [295]

Answer:

it would be 17 im positive

Step-by-step explanation:

.

8 0
3 years ago
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Suppose that 95% of the fasteners pass the initial inspection. Of those that fail the initial inspection, 20% are defective. Of
hichkok12 [17]

Answer

Step-by-step explanation:

Let x be the fasteners

95% of x passed, and 5% of x failed

20% of the 5% which failed are defective, remaining the 80% of the failed 5%.

Now 40% of this 80% of the 5% which failed are scrapped, meaning only the remaining 60% passed second inspection.

Thus

a). The proportion ;

60% of 80% of 5% of x

mathematically

= 60/100 × 80/100 × 5/100

= 0.024 or 2.4%

b) initially 95% passed and later on 2.4% pass again. Therefore total that passed = 95%+2.4%=97.4%

c) probability that it passed on first inspection is 95/100

Percentage that went through recrimping = 80% of 5% = 80/100 × 5/100 = 1/25 or 0.04 or 4%

Thus probability of passing and not going through recrimping

= 1 - (1/25) = 0.96 or 96%

7 0
3 years ago
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