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nadya68 [22]
3 years ago
15

When a number is decreased by 47%, the result is 20. What is the original number

Mathematics
1 answer:
Digiron [165]3 years ago
3 0

Answer:

42.553191489361

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This table shows the number of marbles in a bag by color. If one marble is randomly selected from the bag, what is the
ratelena [41]

Answer:

p(blue or red) = 0.52 = 52%

Step-by-step explanation:

total number of marbles = 7 + 10 + 14 + 19 = 50

number of blue marbles = 7

number of red marbles = 19

number of blue or red marbles = 7 + 19 = 26

p(blue or red) = 26/50

p(blue or red) = 0.52 = 52%

3 0
3 years ago
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0.3% of a country has a certain disease. The test for the disease has a sensitivity of 92% (i.e., of those we know have the dise
butalik [34]

Answer:

0.95988 (Accuracy of the test )

Step-by-step explanation:

To determine the accuracy of this test we have to list out the given values

Prevalence rate of the disease = 0.3% = 0.003

sensitivity rate of the disease = 92% = 0.92

specificity rate for the test = 96% = 0.96

The accuracy of the test can be found using this equation

Accuracy = sensitivity * prevalence + specificity ( 1 - prevalence )

                = 0.92 * 0.003 + 0.96 ( 1 - 0.003 )

                = 0.00276 + 0.95712

                = 0.95988

6 0
3 years ago
max bought 2 3/4 punds of green apples, 1 5/8 pounds of yellow apples, and 1 5/8 pounds red apples. the total cost was $5.40. wh
dangina [55]
2 3/4 + 1 5/8 + 1 5/8 =
2 + 1 + 1 = 4 (add the whole numbers)
3/4 + 5/8 + 5/8 = 6/8 + 5/8 + 5/8 = 16/8 = 2 (add the fractions)
4 + 2 = 6 total lbs

5.40 for 6 lbs = 5.40/6 = 0.90  (so the apples cost 90 cents per lb)
7 0
3 years ago
How do you write 0.0896 in scientific notation?
il63 [147K]

Answer: 8.96 × ten to the power of two

Sorry, I couldn't write ten to the power of two in numbers...but you get it right?

8 0
3 years ago
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How do you solve 2=11+3(3x+3)
nadezda [96]

Answer:

Just do it Nike

Step-by-step explanation:

4 0
3 years ago
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