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qaws [65]
3 years ago
6

A​ city's mean minimum daily temperature in February is 22 degrees Upper F. Suppose the standard deviation of the minimum temper

ature in February is 5 degrees Upper F and that the distribution of minimum temperatures in February is approximately Normal. What percentage of days in February has minimum temperatures below freezing (32 degrees Upper F )​?
Mathematics
1 answer:
Rom4ik [11]3 years ago
3 0

Answer:

97.72%

Step-by-step explanation:

Given that a city's mean minimum daily temperature in February is 22 degrees Upper F, with std deviation 5 degrees.

Let X be the minimum temperature in February

Then X is N(22,5)

To calculate  percentage of days in February has minimum temperatures below freezing (32 degrees Upper F )

Probability that X <32 degrees

=P(Z

Convert this into percent by multiplying by 100

97.72% of days in February has minimum temperatures below freezing (32 degrees Upper F )​

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It means that if you fold it in half the two halves will be the exact same
6 0
3 years ago
They're usually 365 days in each year every 4th year is call a leap year and has one extra day in February how many days are the
Mariana [72]

Answer:

Total number of days in 8 years is 2,922 days.

Step-by-step explanation:

Number of days in a Normal year  = 365 days

Number of days in a  leap year  =  366 days

Also, Leap year comes exactly ONE TIME in every FOUR YEARS.

⇒ In every consecutive 4 years, 1 year is a leap year.

⇒ So, number of leap years in 8 years  =   2

Now, 8 Years  = 6 Normal years +  2 leap Years

<u>Number of days in 6 normal years</u>

= 6 x ( Number of days in a regular year)

= 6 x (365 days)  = 2,190 days

<u>Number of days in 2 leap years</u>

= 2 x ( Number of days in a leap year)

= 2 x (366 days)  = 732 days

So, Total number of days in 8 years

= Number of days in 6 regular years  + Number of days in 2 leap years

= 2,190 days  +  732 days

= 2,922 days

Hence, total number of days in 8 years is 2,922 days.

5 0
3 years ago
The surface area of a cube is 96 in.?.<br>What is the volume of the cube?​
salantis [7]

Answer:

64

Step-by-step explanation:

surface area of the cube =96

suppose one side of the cube = a

volume of the cube(V) =?

surface area = 6a^2    

6a^2=96

a ^2 =96/6  

a^2=16  

a = 4

SO

V= a^ 3  

V=64.

brainliest plz :'D

3 0
3 years ago
Read 2 more answers
Which of the following does not describe slope?
Hoochie [10]
C so a proportional relationship
4 0
3 years ago
Read 2 more answers
Answer it right and i'll try to give you brainliest.
mario62 [17]

Answer:

384 cm²

Step-by-step explanation:

Since it is a square pyramid, the total surface area of the pyramid is the area of its square base plus the area of its 4 triangular faces.

\boxed{area \: of \: triangle =  \frac{1}{2} \times base \times height }

Area of a triangular face

= ½ ×12 ×10

= 60 cm²

\boxed{area \: of \: square = side \times side}

Base area of pyramid

= 12 ×12

= 144 cm²

∴ Surface area of pyramid

= 4(60) +144

= 240 +144

= 384 cm²

7 0
2 years ago
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