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3 years ago

The value of 5/121^1/2

Mathematics

1 answer:

Pavel [41]3 years ago

6 0

Answer:

√5/121

Step-by-step explanation:

formula: a^½=√a

(⁵/¹²¹)^½=√⁵/¹²¹

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What number is 7.5 more than 7.4?

Lorico [155]

Answer:

the answer is 14.9

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3 years ago

Mean=78

bija089 [108]

Answer:

74 and 79

Step-by-step explanation:

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3 years ago

Chara wants to buy a new car. She finds an ad for a car that costs $ 24 300. Suppose that the local sales tax is 4 %. How much t

Studentka2010 [4]

Answer:

she would pay 97.2 in tax

would pay with tax included 24397.2

she can buy the car with cash

Step-by-step explanation:

24300

24300 times 0.4 then do

9720 divided by 100

97.2

she would pay 97.2 in tax

24300 + 97.2 is 24397.2

would pay with tax included 24397.2

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3 years ago

A diagnostic test for a disease is such that it (correctly) detects the disease in 90% of the individuals who actually have the

mart [117]

Answer:

0.1552

Step-by-step explanation:

Hi!

Give a random person, lets call:

D = the person has the disease

¬D = the person doesnt have the disease

T = the test on this person is positive (detects the disease)

¬T = the test on this person is negative

We are give the conditional probabilities:

P(T | D) = 0.9

P(¬T | ¬D) = 0.9

P(D) = 0.02

From those we know that:

P(T | ¬D) = 0.1

P(¬T | D) = 0.1

We must find P(D | T). For that we use Bayes theorem:

$P(D|T) = \frac{ P(T|D)P(D)}{P(T|D)P(D) +P(T| \neg D)P(\neg D) }$

$P(D | T) = \frac{0.9*0.02}{0.9*0.02 + 0.1*0.98} = 0.1552$

6 0

3 years ago

In a two-digit number, the tens' digit is 1 less than the units' digit. If the digits are

Tomtit [17]

Answer:

Step-by-step explanation:

Number: AB

A = B-1

BA + AB = 143

10*B + A + 10*A + B = 143

11A + 11B = 143

A + B = 13

(B-1) + B = 13

2B = 14

B = 7

A = 6

The number is 67

check: 6 = 7-1 and 67 + 76 = 143

6 0

3 years ago

The value of 5/121^1/2​

The value of 5/121^1/2