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mr Goodwill [35]
3 years ago
9

(3/5x + 4) + (1/5x - 7)

Mathematics
1 answer:
Dafna1 [17]3 years ago
8 0

Answer:

-3+4x/5

Step-by-step explanation:

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-27 = 3 (x - 2) How do I solve this? Step by step please
AleksandrR [38]

Answer:

Step-by-step explanation:

3(x - 2) = -27

3x - 6 = -27

3x = -21

x = -7

6 0
3 years ago
According to a​ survey, 67​% of murders committed last year were cleared by arrest or exceptional means. Fifty murders committed
Mrac [35]

Answer:

a) P(X=41)= 0.0086 = 0.86%

b) P(36≤X≤38)== 0.1215 = 12.15%

c) would be unusual that fewer that 20 murders were cleared because P(X≤20) = 0.000081 =0.0081%

Step-by-step explanation:

if the random variable X= number of cleared murders , then X follows a binomial distribution:

P(X=x)= n!/[(n-x)!*x!]*p^x*(1-p)^(n-x)

where P(X=x)= probability of x cleared murders, n= number of murders selected=50 , p= probability for a murder to be cleared (67%)

therefore

a) P(X=41)=50!/[(50-41)!*41!]*0.67^41*0.33^(50-41)= 0.0086

b) P(36≤X≤38)= P(X≤38) - P(X≤36) = 0.9371- 0.8156 = 0.1215

c) P(X≤20) = 0.000081

therefore would be unusual that fewer that 20 murders were cleared

5 0
3 years ago
In circle N with m<br> See diagram below
Alex777 [14]

Answer:

113.10

Step-by-step explanation:

The area of a sector with measure \theta and radius r is given by A_{sec}=r^2\pi\cdot \frac{\theta}{360^{\circ}}.

What we're given:

  • r of 12
  • \theta of 90^{\circ}

Substituting given values, we get:

A_{sec}=12^2\pi\cdot \frac{90}{360},\\\\A_{sec}=144\pi\cdot \frac{1}{4},\\\\A_{sec}\approx \boxed{113.10}

8 0
3 years ago
Kevin is observing the population of the fish he put into a pond. He built a pond and populated it with 500 fish. The population
LuckyWell [14K]
Given that the number of years should be represented with x, the number of fish in the pond after x years should best be represented with f(x). The equation that would best show the given scenario in the problem above is,
                             f(x) = 500(2^x)
From the given, 500 is used as the initial population of the fish. 
4 0
3 years ago
Figure CDEF is a parallelogram.
NikAS [45]

Answer:

n=10, CF=59, FE=49

6 0
3 years ago
Read 2 more answers
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