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1 year ago

The probability that a randomly selected 25-year-old male will survive the year is 0.9984 according to a report on vital

Mathematics

1 answer:

iris [78.8K]1 year ago

6 0

Answer:

0.9952076759

Step-by-step explanation:

Probability that all three survive

= 0.9984 × 0.9984 × 0.9984

= 0.9952076759

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There are two mixtures. One mixture contains 5% alchol and the other mixture contains 12% alchol. How much of each should be mix

hichkok12 [17]

Answer:

to make 1000 gallons with 10% alcohol, we need 714.3 gallons of mixture that contains 5% alcohol and 285,7 gallons of mixture that contains 12% alcohol.

Step-by-step explanation:

According to the statement, there are two mixtures. One mixture contains 5% alcohol and the other contains 12% alcohol.

We want to make 1000 gallons with 10% alcohol, so we have the following system of equations:

A + B = 1000 gallons. [1]

0.05A + 0.12B = 0.1(1000) ⇒ 0.05A + 0.12B = 100 [2]

(Where 'A' represents the mixture that contains 5% alcohol and 'B' the one that contains 12% alcohol).

Solving the system of equations:

A + B = 1000 ⇒ A = 1000 - B [3]

[3] → [2]

0.05(1000 - B) + 0.12B = 100 ⇒ 50 - 0.05B + 0.12B = 100

⇒ 0.07B = 50 ⇒ B = 714.28 ≈ B=714.3 [4]

[4] → [1]

A + B = 1000 ⇒ A + 714.3 = 1000 ⇒ A = 285,7

Therefore, to make 1000 gallons with 10% alcohol, we need 714.3 gallons of mixture 'A' and 285,7 gallons of mixture 'B'

4 0

2 years ago

What’s 2-3-4-4+7. Plzzzz

nignag [31]

Answer:

-2

Step-by-step explanation:

Simplify the following:

2 - 3 - 4 - 4 + 7

2 - 3 - 4 - 4 + 7 = (2 + 7) - (3 + 4 + 4):

(2 + 7) - (3 + 4 + 4)

2 + 7 = 9:

9 - (3 + 4 + 4)

3 + 4 = 7:

9 - (7 + 4)

7 + 4 = 11:

9 - 11

9 - 11 = -2:

Answer: -2

6 0

2 years ago

Read 2 more answers

The area of a playground is 12 square yards. The length of the playground is 3 times longer than its width. Find the length and

marishachu [46]

Answer:

Width is 2 and Length is 6

Step-by-step explanation:

As the data is given, the area of a playground is 12 square yards.
The length of the playground is 3 times longer than its width.
Let width is x, length is 3 times therefore, length = 3x

As we know the formula for area,

Area=length x width.

So by putting values in this formula,

12sq = (3x)(x)

=> 3x2 = 12

=> x2 = 12/3,

=> x2 = 4 ,

by taking square root we get x= 2,

the width is 2 and length is 3 times hence, length is 3(2) = 6.

6 0

3 years ago

PLEASE HELP ASAP PLEASE

Bond [772]

Answer:

So, if ya wanna solve this question and of course questions alike, ya gotta pay attention to the graph. mean All of these parabolic chart have the domain of R

Step-by-step explanation:

So there ya go

D=R

and now bout the range ya gotta find the vertex, which is:

$x = \frac{ - b}{2a} \: \: y = \frac{Δ}{4a}$