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nekit [7.7K]
2 years ago
14

Enn ran Four-fifths of a mile and then walked Seven-eighths of a mile around a track. Which expression can be used to find how m

uch farther she walked than ran?
Mathematics
1 answer:
Lapatulllka [165]2 years ago
8 0

Answer:

ANSWER: A) 15/40 and 28/40

Step-by-step explanation: Ive done this before lol

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Let X denote the time in minutes (rounded to the nearest half minute) for a blood sample to be taken. The probability mass funct
Basile [38]

This question is incomplete, the complete question is;

Let X denote the time in minutes (rounded to the nearest half minute) for a blood sample to be taken. The probability mass function for X is:

x     0       0.5       1       1.5       2       2.5

f(x)  0.1     0.2     0.3    0.2     0.1       0.1

determine;

a) P( X < 2.5 )

B) P( 0.75 < X ≤ 1.5 )

Answer:

a) P( X < 2.5 ) = 0.9

b) P( 0.75 < X ≤ 1.5 ) = 0.5

Step-by-step explanation:

Given the data in the question;

The probability mass function for X is:

x     0       0.5       1       1.5       2       2.5

f(x)  0.1     0.2     0.3    0.2     0.1       0.1

a) P( X < 2.5 )

P( X < 2.5 ) = p[ x = 0 ] + p[ x = 0.5 ] + p[ x = 1 ] + p[ x = 1.5 ] + p[ x = 2 ]

so

P( X < 2.5 ) = 0.1 + 0.2 + 0.3 + 0.2 + 0.1

P( X < 2.5 ) = 0.9

b) P( 0.75 < X ≤ 1.5 )

P( 0.75 < X ≤ 1.5 ) = p[ x = 1 ] + p[ x = 1.5 ]

so

P( 0.75 < X ≤ 1.5 ) = 0.3 + 0.2

P( 0.75 < X ≤ 1.5 ) = 0.5

3 0
3 years ago
Kwame borrowed 300 Ghana cedis from a finance company. He repaid the loan in six equal installment 55 Ghana cedis. How much inte
Bumek [7]

Answer:

The amount of interest, he payed is 30 Ghana Cedis

Step-by-step explanation:

The amount Kwame borrowed from the finance company, P = 300 Ghana Cedis

The amount he repaid in each installment, M = 55 Ghana Cedis

The number of installments with which he repaid the loan, n = 6 installments

The amount of interest, "i", he payed, is given by the following formula;

The amount of interest, he payed, i = M × n - P

Therefore, i = 55 × 6 - 300 = 30

The amount of interest, he payed = i = 30 Ghana Cedis.

3 0
3 years ago
Geomtry 20 points: find m
Amiraneli [1.4K]

Answer:

it is not factorable

Step-by-step explanation:

it is not factorable

3 0
3 years ago
I give brain please help
Snowcat [4.5K]

Answer:

It’s an open circle, so it’s

x > 4

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
In the diagram, AB BC. AC CD, and AD = 12.<br><br> Find BD.
Salsk061 [2.6K]

Answer:

3 I believe

Step-by-step explanation:

so AB is equal to BC. AC is equal to CD. AD is 12 in total and if you half it it is 6. AC is half of AD. Therefore I got 3

6 0
3 years ago
Read 2 more answers
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