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expeople1 [14]
3 years ago
12

Solve for w. 6>9+w.......

Mathematics
1 answer:
kramer3 years ago
7 0

the answer is.... w<-3

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A square has a side length of 6x+2. a rectangle with width 3x+1 has the same area as the square. what is the length of the recta
deff fn [24]

Answer:

2

Step-by-step explanation:

(6x+2)/(3x+1) = 2

3 0
3 years ago
A certain virus infects one in every 200 people. a test used to detect the virus in a person is positive 70​% of the time when t
V125BC [204]

We're told that

P(A)=\dfrac1{200}=0.005\implies P(A^C)=0.995

P(B\mid A)=0.7

P(B\mid A^C)=0.05

a. We want to find P(A\mid B). By definition of conditional probability,

P(A\mid B)=\dfrac{P(A\cap B)}{P(B)}

By the law of total probability,

P(B)=P(B\cap A)+P(B\cap A^C)=P(B\mid A)P(A)+P(B\mid A^C)P(A^C)

Then

P(A\mid B)=\dfrac{P(B\mid A)P(A)}{P(B\mid A)P(A)+P(B\mid A^C)P(A^C)}\approx0.0657

(the first equality is Bayes' theorem)

b. We want to find P(A^C\mid B^C).

P(A^C\mid B^C)=\dfrac{P(A^C\cap B^C)}{P(B^C)}=\dfrac{P(B^C\mid A^C)P(A^C)}{1-P(B)}\approx0.9984

since P(B^C\mid A^C)=1-P(B\mid A^C).

4 0
3 years ago
How do you solve 39 equal to 1 3/10b
elena-s [515]
If 39 = (1 3/10)b, we could simplify this by writing 39 - (13/10)b.

Solve this for b by mult. both terms by (10/13):

(10*39)
----------- = (10/13)(13/10)b.  Then b = 30 (answer)
      13
5 0
3 years ago
Find a so that the point (-1,5) is on the graph of f(x)=ax2+1
sasho [114]

Step-by-step explanation:

to solve for a,

f(-1) = 5

a(-1)^2 + 1 = 5

a + 1 = 5, so a=4

7 0
3 years ago
Gwen is sending a box to a friend. The box weights 23.5 pounds. Gwen removes a 4.47-pounds book to decrease the shipping cost. W
SCORPION-xisa [38]
23.5 - 4.47 = 19.03. Your final answer: “Gwen’s new box weighs 19.03 pounds”
8 0
3 years ago
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