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2 years ago

Do u know what 42 ÷____= 0.042 is I need help

Mathematics

1 answer:

Bingel [31]2 years ago

3 0

Answer:

1000

Step-by-step explanation:

Doing this on a calculator yields 1000.

Alternatively, do part or all of the problem in your head:

Rewrite 42 ÷____= 0.042 as

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

0.042

and move the decimal points 3 place to the right:

42 becomes 42000, and 0.042 becomes 42. Thus, we have:

42000

------------ = 1000

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3 years ago

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Blue Cab operates 15% of the taxis in a certain city, and Green Cab operates the other 85%. After a nighttime hit-and-run accide

NikAS [45]

Answer: The required probability is 0.414.

Step-by-step explanation:

Since we have given that

Probability of taxis in a certain city by Blue Cab P(B)= 15%

Probability of taxis by Green Cab P(G) = 85%

Let A be the event that eyewitness said that vehicle was blue.

P(A|B)=0.80

P(A|G)=0.80

P(A'|B)=0.20=P(A'|G)

Using the "Bayes theorem":

Probability that the taxi at fault was blue is given by

$=\dfrac{P(B).P(A|B)}{P(B).P(A|B)+P(G).P(A'|G)}\\\\=\dfrac{0.15\times 0.8}{0.15\times 0.8+0.85\times 0.2}\\\\=\dfrac{0.12}{0.12+0.17}\\\\=\dfrac{0.12}{0.29}\\\\=0.414$

Hence, the required probability is 0.414.

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2 years ago

1.2345 x 10 to the -3rd power

miv72 [106K]

Answer:

12345.000

Step-by-step explanation:

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2 years ago

Write an equation to represent each

Soloha48 [4]

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2 years ago

A trapezoid has a height of 3 meters, a base length of 8 meters, and an area of 30 square meters. What is the length of the base

algol [13]

Answer:

Length of the second base will be 12 meters.

Step-by-step explanation:

Area of a trapezoid is given by the formula,

Area = $\frac{1}{2}(b_1+b_2)h$

Here, b₁ and b₂ are the bases of the trapezoid and 'h' is the vertical distance between the bases.

By substituting the values in the formula,

$30=\frac{1}{2}(8+b_2)3$

$60=3(8+b_2)$

$20=8+b_2$

$b_2=12$

Therefore, length of the second base will be 12 meters.

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2 years ago