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quester [9]
3 years ago
11

What is the solution to -5x-7≤2?

Mathematics
2 answers:
zzz [600]3 years ago
8 0

Answer:

x ≥ -9/5

Step-by-step explanation:

-5x≤9

then divide -5

mr_godi [17]3 years ago
4 0

Answer:

Step-by-step explanation:

-5x - 7 ≤ 2

+ 7 ≤ +7

---------------

-5x ≤ 9

---- -----

-5 -5

X=-1.8

-5(-1.8)-7 ≤ 2

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The number of electrical outages in a city varies from day to day. Assume that the number of electrical outages ( x ) in the cit
svlad2 [7]

Answer:

0.26 and 0.577

Step-by-step explanation:

Given :

x :___0 ___ 1 ____ 2 ____ 3

f(x):_0.80 _0.15__0.04 __0.01

The mean :

E(X) = Σ(x * p(x))

E(X) = (0*0.8) + (1*0.15) + (2*0.04) + (3*0.01)

E(X) = 0 + 0.15 + 0.08 + 0.03

E(X) = 0.26

Var(X) = Σx²*p(x)) - E(x)²

Σx²*p(x)) = (0^2*0.8) + (1^2*0.15) + (2^2*0.04) + (3^2*0.01) = 0.4

Σx²*p(x)) - E(x)² = 0.4 - 0.26² = 0.3324

Std(X) = √0.334 = 0.577

7 0
3 years ago
What is 10 more than 451
TEA [102]
10 more than 451 would be 451 + 10 = 461.


6 0
3 years ago
Read 2 more answers
Last year during November there was a heatwave. The average daily temperature went from 57°F to 76°F. What was the percent incre
lesya692 [45]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
According to a survey, 62% of murders committed last year were cleared by arrest or exceptional means. Fifty murde committed las
alexira [117]

Answer:

a) The probability that exactly 41 of the murders were cleared is 0.0013

b) The probability that between 36 and 38 of the murders, inclusive, were cleared is 0.0809.

c) Yes, it would be unusual

Step-by-step explanation:

Let p=62% considered as the probability of having a commited that is cleared by arres or exceptional means. We assume that choosing each of the 50 commited is independent of each choose. Then, let X be the number of cleared. In this case, X is distributed as a binomial random variable. Recall that, in this case,

P(X=k) = \binom{50}{k} p^{k}(1-p)^{50-k} for0\leq k \leq 50, with p=0.62

a) We have that

P(X=40) = \binom{50}{40} p^{40}(1-p)^{50-40} =0.001273487

b) We are asked for the following

P(36\leq X \leq 38) = P(X=36)+P(X=37)+P(X=38) = 0.080888936
 (The specific calculation is omitted.

c) We will check for the following probability P(X\leq 19)

P(X\leq 19 ) = \sum_{k=0}^{19} P(X=k) = 0.000499222


Given that the probability of this event is really close to 0, it would be unusual if less than 19 murders are cleared.

4 0
3 years ago
PLEASE ANSWERS BOO'S!!!!
kiruha [24]
The answer is a and remember to use the pythagorean theorem to answer these questions. The numbers are usually listed leg, leg, hypotenuse.
7 0
3 years ago
Read 2 more answers
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