All categories

3 years ago

A delivery service charges $1.25 for

Mathematics

1 answer:

choli [55]3 years ago

8 0

Answer: $6\ \text{miles}$

Step-by-step explanation:

Given

A delivery service charge $\$1.25$ for each delivery

and an additional $\$0.75$ for each mile traveled

Suppose, x miles are covered

The charge is given by

$\Rightarrow 5.75=1.25+0.75x\\\Rightarrow 4.5=0.75x\\\Rightarrow x=6\ \text{miles}$

Therefore, driver traveled 6 miles for delivery

You might be interested in

Q6. (15 points) IQ examination scores of 500 members of a club are normally distributed with mean of 165 and SD of 15.

melamori03 [73]

Answer:

a) 0.8413

b) 421

c) $P_{95} = 189.675$

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 165

Standard Deviation, σ = 15

We are given that the distribution of IQ examination scores is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(IQ scores at most 180)

P(x < 180)

$P( x < 180) = P( z < \displaystyle\frac{180 - 165}{15}) = P(z < 1)$

Calculation the value from standard normal z table, we have,

$P(x < 180) = 0.8413 = 84.13\%$

b) Number of the members of the club have IQ scores at most 180

n = 500

$\text{Members} = n\times \text{P(IQ scores at most 180)}\\= 500\times 0.8413\\=420.65 \approc 421$

c) P(X< x) = 0.95

We have to find the value of x such that the probability is 0.95

$P( X < x) = P( z < \displaystyle\frac{x - 165}{15})=0.95$

Calculation the value from standard normal z table, we have,

$P(z < 1.645) = 0.95$

$\displaystyle\frac{x - 165}{15} = 1.645\\\\x = 189.675$

$P_{95} = 189.675$

8 0

3 years ago

Help me!!! the question is in the attachment

pentagon [3]

√300 = √100.√3 = 10.√3 and √3 is approx 1.732 therefore 10*1.732= 17.32.

therefore the integers it's between are 16 and 17

4 0

2 years ago

Find x. Pleaseee help

hoa [83]

Answer:

x=35

Step-by-step explanation:

plz mark me as brainliest

4 0

2 years ago

You download 12 new songs to your MP3 player. Then you delete 5 old songs. Write each amount as an integer.

Lapatulllka [165]

Answer:

the new ones and the old ones that you didn’t delete

Step-by-step explanation:

5 0

3 years ago

This is part of a bus timetable between Birmingham and Coventry (see attached image )

leva [86]

Answer:

a. 1 hour and 32 minutes b. 8:07

Step-by-step explanation:

a.8:34-7:02

b. 9 minutes +1 hour and 32 minutes+12 minutes=1.53 hours before 10=8:07

5 0

3 years ago