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aliina [53]
3 years ago
15

} = \frac{7}{5} " alt=" \frac{4}{x} = \frac{7}{5} " align="absmiddle" class="latex-formula">

​find x
Mathematics
2 answers:
Firlakuza [10]3 years ago
6 0
They have the correct answer
RUDIKE [14]3 years ago
5 0

Answer:

x = \frac{20}{7}

Step-by-step explanation:

Given

\frac{4}{x} = \frac{7}{5} ( cross- multiply )

7x = 20 ( divide both sides by 7 )

x = \frac{20}{7}

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The authors of a paper presented detailed case studies to medical students and to faculty at medical schools. Each participant w
stealth61 [152]

Answer:

0.623

Step-by-step explanation:

We have to find the probability that a diagnosis is correct given that confidence in the correctness of diagnosis is high i.e.P(C/H)=?

Using Bayes' theorem the probability can be computed as

P(C/H)=\frac{P(C)P(H/C)}{P(C)P(H/C)+P(I)P(H/I)}

We are given that

P(C) = 0.262 , P(H/C) = 0.344 , P(I) = 0.738  and P(H/I) = 0.074.

So,

P(C/H)=\frac{0.262(0.344)}{0.262(0.344)+0.738(0.074)}

P(C/H)=\frac{0.0901}{0.0901+0.0546}

P(C/H)=\frac{0.0901}{0.1447}

P(C/H)=0.6227

P(C/H)=0.623 (rounded to three decimal places).

Thus, the probability that a diagnosis is correct given that confidence in the correctness of diagnosis is high is 0.623.

3 0
3 years ago
Which graph has a steeper negative slope and a y-intercept that is closer to the origin than y = - 1/2x - 6
Sidana [21]

Answer:

the second picture

Step-by-step explanation:

3 0
3 years ago
Burning coal yields about 30 x 106 joules of energy per kilogram of coal burned, but only 30% of that energy goed into electrici
abruzzese [7]

Answer:

Number of bulbs which can be lit using 1 kg of coal = 9

Step-by-step explanation:

Energy yielded by burning 1 kg of coal = 30 × 106 joules

                                                                = 3180 joules

Amount of energy that can be used for electricity = 30 % of 3180 joules

                                                                                   = 0.30 × 3180

                                                                                    = 954 joules

Energy needed for lighting one bulb = Wattage of bulb × No. of hours of lighting

⇒ Energy needed for lighting one bulb = 100 × 1

                                                                  = 100 joules

\text{Now, Number of bulbs which can be lit for one hour = }\frac{954}{100}\\\\\implies\bf\textbf{Number of bulbs = }9.54\approx 9

Hence, Number of bulbs which can be lit using 1 kg of coal = 9

4 0
4 years ago
What is the value of m in the equation 5m − 7 = 6m 11? 18 1 −18 −1.
riadik2000 [5.3K]

Answer: 18

Step-by-step explanation: 5m - 7 = 6m + 11

Solve for M

5m - 6m = 11+ 7

-m = 18

Divide both sides by -1

-m/-1 = 18/-1

m = -18

4 0
3 years ago
If 14 is added to a number, the result is 40 less than twice the number. Find the number.
UkoKoshka [18]

Answer:

Asher should be 61

Step-by-step explanation:

8 0
2 years ago
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