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gayaneshka [121]
3 years ago
13

Find sin(a), cos(a), and tan(a). show your work.​

Mathematics
1 answer:
katen-ka-za [31]3 years ago
8 0

Answer:

sin is 8/17

cos is 15/17

tan is 8/15

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This problem demonstrates the concept of redundancy, the principle of improving reliability of systems by using redundant or bac
AysviL [449]

Answer:

hello,

Step-by-step explanation:

a)

p(fail)=0.05

p(not fail)=1-0.05=0.95

b)

p(3 fails)=0.05³=0,000125

c)

p(1 or more system not fail)=1-0.05³=0.999875

d)

it increase the security.( here  4/100 for 3 systems)

3 0
3 years ago
What is the probability that a randomly selected person supports the new station??
mezya [45]

Answer:

.52

Step-by-step explanation:

We can write an equation

supports/all

we can see that 27 males and 25 females support which means that

27+25= 52 total people support

now we just need to find the number of people surveyed

we do this by summing everything

27+25+18+13+5+12=100

52/100 = .52

4 0
3 years ago
Read 2 more answers
ajwad went apple picking.He picked a total of 84 apples and brought them all to school.If there are 21 students,how many apples
Grace [21]
I'm pretty sure the answer is 4 because, 4*21= 84.
4 0
3 years ago
Read 2 more answers
What is the slope of y = - x + 7
svet-max [94.6K]

\green{\huge{\red{\boxed{\green{\mathfrak{QUESTION}}}}}}

What is the slope of y = - x + 7

\red{ \bold{ \textit{STANDARD \:  EQUATION}}}

y = mx + c

WHERE  \\ m = SLOPE  \\ c = Y -  INTERCEPT

\huge\green{\boxed{\huge\mathbb{\red A \pink{N}\purple{S} \blue{W} \orange{ER}}}}

\blue{A.T.Q}

y = mx + c   \sim  y = ( - 1)x + 7

\orange{SO}

m= (-1)

which is equal to the slope of the equation .

\red \star{Thanks \:  And  \: Brainlist}  \blue\star \\  \green\star  If \:  U  \: Liked \:  My  \: Answer \purple \star

3 0
3 years ago
Please help
ASHA 777 [7]

Answer:

(-6,4)

Step-by-step explanation:

The equations are:

x^2+4y^2=100\\4y-x^2=-20

Solving for x^2 of the 2nd equation and putting that in place of x^2 in the 2nd equation we have:

4y-x^2=-20\\x^2=4y+20\\-------\\x^2+4y^2=100\\4y+20+4y^2=100

Now we can solve for y:

4y+20+4y^2=100\\4y^2+4y-80=0\\y^2+y-20=0\\(y+5)(y-4)=0\\y=4,-5

So plugging in y = 4 into an equation and solving for x, we have:

x^2=4y+20\\x=+-\sqrt{4y+20} \\x=+-\sqrt{4(4)+20} \\x=+-\sqrt{36} \\x=6,-6

So y = 4 corresponds to x = 6 & x = -6

The pairs would be

(6,4) & (-6,4)

<u><em>we see that (-6,4) falls in the 2nd quadrant, thus this is the solution we are looking for.</em></u>

5 0
3 years ago
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