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OverLord2011 [107]
2 years ago
15

Look!! I need the answer asap, please!

+38=-25" alt="\bf x+38=-25" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
Alexandra [31]2 years ago
3 0

Answer:

<h2>-63</h2>

Step-by-step explanation:

<h3>= > x + 38 = - 25 </h3><h3>= > x = - 25 - 38 </h3><h3>= > x = - 63...ans</h3>

<h2>HOPE IT HELPS YOU!!!! </h2>
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Rabies is an often-fatal disease typically transmitted through the bite of an infected animal. The state of Florida has been rec
slega [8]

Answer:

a) 3.6

b) 1.897

c)0.0273

d) 0.9727

Step-by-step explanation:

Rabies has a rare occurrence and we can assume that events are independent. So, X the count of rabies cases reported in a given week is a Poisson random variable with μ=3.6.

a)

The mean of a Poisson random variable X is μ.

mean=E(X)=μ=3.6.

b)

The  standard deviation of a Poisson random variable X is √μ.

standard deviation=S.D(X)=√μ=√3.6=1.897.

c)

The probability for Poisson random variable X can be calculated as

P(X=x)=(e^-μ)(μ^x)/x!

where x=0,1,2,3,...

So,

P(no case of rabies)=P(X=0)=e^-3.6(3.6^0)/0!

P(no case of rabies)=P(X=0)=0.0273.

d)

P(at least one case of rabies)=P(X≥1)=1-P(X<1)=1-P(X=0)

P(at least one case of rabies)=1-0.0273=0.9727

8 0
2 years ago
X + 4y = 16<br> -X + 3y = -2 ​
jeyben [28]

Answer:

(8, 2 )

Step-by-step explanation:

Given the 2 equations

x + 4y = 16 → (1)

- x + 3y = - 2 → (2)

Adding the 2 equations term by term will eliminate the x- term

0 + 7y = 14

7y = 14 ( divide both sides by 7 )

y = 2

Substitute y = 2 into either of the 2 equations and solve for x

Substituting into (1)

x + 4(2) = 16

x + 8 = 16 ( subtract 8 from both sides )

x = 8

solution is (8, 2 )

7 0
3 years ago
Thu gọn biểu thức : (x-5)(x+5)-(x+1)^2
Kipish [7]

(x-5)(x+5)-(x+1)^2\\=x^2 -25-(x^2+2x +1)\\=x^2 -25-x^2-2x -1\\=-2x-26

ANSWER: -2x -26

Ok done. Thank to me :3

5 0
9 months ago
the ratio of seniors to juniors in the math club is 2:3. If there are 21 juniors, how many seniors are in the club?
Bond [772]

Answer:14

Step-by-step explanation:

1. Ratio : 2:3

2. Multiply the number of juniors by the Ratio

(2/3)(21)

3. Solve for answer

Answer: 14

8 0
3 years ago
Give the coordinates for point A without using any new variables
Alja [10]
7.\\A(n+1;\ m)\\\\8.\\A(k;\ 0)
6 0
3 years ago
Read 2 more answers
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