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3 years ago

Please help more!!!!!!!!

Mathematics

1 answer:

Charra [1.4K]3 years ago

8 0

Answer:

378 < 460 < 465

Step-by-step explanation:

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Which one A. B. C. D.

Usimov [2.4K]

B. is correct! Hope this helps!

4 0

3 years ago

Read 2 more answers

The average person lives for about 78 years. Does the average person live for at least 1,000,000 hours There are 365 days in eac

Tju [1.3M]

(1 x 10⁶ hours) x (1 day / 24 hours) x (1 year / 365 days)

= 114.26 years .

No. People are not there yet.

3 0

3 years ago

4x-y, when x=5 and y=6

Akimi4 [234]

4x-y
x= 5
y= 6

replace in the ecuation above:
4•5-6= 20-6= 14

6 0

4 years ago

Read 2 more answers

Dale travels from city A to city B to city C and back to city A. Each city is exactly 120 miles from the other two. His average

Ivahew [28]

Answer:

$average\ speed = 36\ mi/hr$

Step-by-step explanation:

Given:

Each city is exactly 120 miles from the other two.

Average rate from city A to city B = 60 mi/hr

Average rate from city B to city C = 40 mi/hr

Average rate from city c to city A = 24 mi/hr

We need to find the Dale's average rate for the entire trip.

Solution:

First we find the total time and total distance by following way.

Time taken to travel from A to B = $\frac{Distance}{Speed} = \frac{120}{60}= 2\ hr$

Time taken to travel from B to C = $\frac{Distance}{Speed} = \frac{120}{40}= 3\ hr$

Time taken to travel from C to A = $\frac{Distance}{Speed} = \frac{120}{24}= 5\ hr$

So, total time taken = $2+3+5=10\ hr$

Total distance = 120 + 120 + 120 = 360 miles

Using average speed formula.

$average\ speed = \frac{Total\ distance}{Total\ time\ taken}$

$average\ speed = \frac{360}{10}$

$average\ speed = 36\ mi/hr$

Therefore, the average rate for the entire trip $average\ speed = 36\ mi/hr$

8 0

3 years ago

A distribution of measurements is relatively mound-shaped with a mean of 40 and a standard deviation of 15. Use this information

MArishka [77]

Answer:

The proportion of measurements between 25 and 55

P( 25 ≤ X≤ 55) = 0.6826

Step-by-step explanation:

Step(i):-

Given that the mean of the Population = 40

Given that standard deviation of the Population = 15

Let 'x' be the random variable in normal distribution

Let 'X' = 25

$Z = \frac{x-mean}{S.D} = \frac{25-40}{15} = -1$

Let 'X' = 55

$Z = \frac{x-mean}{S.D} = \frac{55-40}{15} = 1$

Step(ii):-

The probability that between 25 and 55

P( 25 ≤ X≤ 55) = P( -1≤z≤1)

= A(1) - A(-1)

= A(1) + A(1)

= 2 × A(1)

= 2× 0.3413

= 0.6826

The proportion of measurements between 25 and 55

P( 25 ≤ X≤ 55) = 0.6826

Final answer:-

The proportion of measurements between 25 and 55

P( 25 ≤ X≤ 55) = 0.6826

4 0

3 years ago