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2 years ago

Please help thanks!!!

Mathematics

2 answers:

Alex73 [517]2 years ago

4 0

Answer:

$a^{2}$

Step-by-step explanation:

arlik [135]2 years ago

4 0

Answer: ?

Step-by-step explanation:

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tiffany has breakfast at a restaurant and the cost of her meal is $27.00.because of the service.she wants to leave a 10% tip.wha

Bess [88]

27*.1= 2.70

27+2.70= 29.70 Total bill

3 0

3 years ago

1. Convert the numeral to a numeral in base ten. 3205 six 43 125 4325 725

mario62 [17]

Expanding the digits, we have

$3205_6 \equiv 3\cdot6^3 + 2\cdot6^2 + 0\cdot6^1 + 5\cdot6^0 = \boxed{725}$

8 0

1 year ago

Show all your work. Indicate clearly the methods you use, because you will be scored on the correctness of your methods as well

laiz [17]

Answer:

The value is $P(A) = 0.133617$

Step-by-step explanation:

From the question we are told that

The mean is $\mu = 7.5$

The standard deviation is $\sigma = 0.2$

The safest water level is between 7.2 and 7.8

Generally the probability that the selected pool has a pH level that is not considered safe is mathematically represented as

$P(A) = 1 - P(7.2 \le X \le 7.8 )$

Here

$P(7.2 < X < 7.8 ) = P(\frac{ 7.2 - \mu }{\sigma } < \frac{X - \mu }{ \sigma }$

Generally $\frac{X - \mu }{ \sigma } = Z (The \ standardized \ value \ of X )$

$P(7.2 < X < 7.8 ) = P(\frac{ 7.2 - 7.5 }{0.2 } < Z$

$P(7.2 < X < 7.8 ) = P(-1.5 < Z$

=> $P(7.2 < X < 7.8 ) = P(Z < 1.5) - P( Z < - 1.5)$

From the z-table the probability of (Z < -1.5) and ( Z <1.5) are

$P(Z < 1.5) = 0.93319$

and

$P(Z < -1.5) = 0.066807$

$P(7.2 < X < 7.8 ) =0.93319 - 0.066807$

$P(7.2 < X < 7.8 ) =0.0866383$

$P(A) = 1 - 0.0866383$

=> $P(A) = 0.133617$

5 0

3 years ago

Now find the components nx and ny of n⃗ in the tilted coordinate system of part b.

Norma-Jean [14]

solution:

vector N points to the left and up so the components Nx and Ny are negative and positive respectively

then ,

Nx = - N sinθ and Ny = N cosθ

3 0

3 years ago

If P(not A) = 0.18 and P(A and B) = 0.44, what is P(B given A)?

pickupchik [31]

p(not A)=0.18

p(A&B)= 0.44

A= 0.44- 0.18

= 0.26

P(B given A)= 0.26+0.18+0.44

=0.7

3 0

3 years ago