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3 years ago

20,157.5 + 8,725.37 =

Mathematics

2 answers:

Anna [14]3 years ago

5 0

Answer:

28,882.87

Step-by-step explanation:

20,157.50

+ 8,725.37

28,882.87

alexandr1967 [171]3 years ago

3 0

Answer:

28,882.87

Step-by-step explanation:

20,157.5

+ 8,725.37

28,882.87

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2. A medical study tests a new cough medicine on 4250 people. It is effective for 3982 people. What is the experimental probabil

Nutka1998 [239]

Answer:

For a 9000 people, the approximate number of people for whom the medicine will be effect is 8432 people

Step-by-step explanation:

Here we have probability is given by

Probability = $\frac{Number\, of \, Success}{Number\, of \, Trials}$ Where:

Number of success = 3982 and

Number of trials = 4250. therefore;

$Probability \, of \, Success = \frac{3982}{4250} = \frac{1991}{2125}$

Therefore, when the medicine is used on 9000 people, the approximate number of people for whom the medicine will be effect is given by;

$\frac{1991}{2125} = \frac{x}{9000} \rightarrow x \times2125 = 1991 \times 9000\\x = \frac{1991 \times 9000}{2125} = \frac{143352}{17} = 8432\frac{8}{17}$

or ≈ 8432 people.

3 0

3 years ago

when kara and Lauren add their ages, the sum is 20 when they multiply their ages, the product is 99 what is difference in their

Ksju [112]

X+y=20
xy=99
Let a+b be denoted a,b
20 = 1,19 2,18 3,17 4,16 5,15, 6,14 7,13 8,12 (9,11) ..Stop
99=3^2*11
Thus the ages are 11 and 9 with a difference of 2.

8 0

3 years ago

The length of a rectangle is shown below:

nasty-shy [4]

Answer:

are you a teacher

Step-by-step explanation:

3 0

3 years ago

Factor of -2800 and -2

alekssr [168]

Answer:

isn't it just -2 it's the greatest common factor (GCF) of -2800 and -2

Step-by-step explanation:

4 0

3 years ago

Changing some of the values in a data set is called transforming the data.<br> A. True<br> B. False

Ann [662]

The answer is a. True

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3 years ago

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