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4 years ago

8

john purchased an old scooter for $32000 and spent $5500 on its repairs. then he sold it to his friend for $33850. how much perc

ent is his gain or loss?

1 answer:

Paladinen [302]4 years ago

6 0

$3,650, because $32,000+$5500=$37,500 Then you do $37,500 minus $33,850=$3,650

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A store sells 3 cans of beans for $9. What is the price of 7 cans of beans?

Leokris [45]

Answer:

21

Step-by-step explanation:

because you divide 9 byy 3 and you get 3 so then you do 7 x 3 7x3 is 21

8 0

3 years ago

The weight of an object on a particular scale is 145.2 lbs. The measured weight may vary from the actual weight by at most 0.3 l

joja [24]

1. Know what you're looking for:

The range is the difference between the lowest and highest values.

Your weight is 145.2 and can vary from the actual weight by maximum 0.3 lbs less or maximum 0.3 lbs more.

2. Calculate your lowest and highest values :

Lowest : 145.2 - 0.3 = 144.9 lbs

Highest : 145.2 + 0.3 = 145.5 lbs

3. Calculate the range of actual weights of the object :

145.5 - 144.9 = 0.6 lbs

--> The answer is: <u>The range of actual weights of the object is 0.6 lbs.</u>

There you go! I really hope this helped, if there's anything just let me know! :)

4 0

3 years ago

The research of Eich and Metcalf would suggest that if you were really happy when you were learning math, you should be ________

omeli [17]

Your answer is "happy" based on <span>mood-dependent memory research they conducted.</span>

4 0

4 years ago

Read 2 more answers

Refer to the technology output given to the right that results from measured hemoglobin levels (g/dL) in 100 randomly selected a

charle [14.2K]

Answer:

Step-by-step explanation:

a)

Confidence interval in less than symbol expressed as

$\bar{x} - E < \mu < \bar{x} + E
$

Where $\bar{x}$ is sample mean and $E$ is margin of error.

$13.03 < \mu 13.42
$

b)

The given t interval is $(13.032 , 13.418 )
$

That is $\bar{x} - E = 13.032$ and $\bar{x} + E = 13.418$

Solve these two equation by adding together.

$2 \bar{x} = 13.032 + 13.418
\\\\\bar{x} = 13.225$

Solve this value of \bar{x} in equation $\bar{x} - E = 13.032$ and solve for $E$

$13.225 - E = 13.032
\\\\E = 0.193
$

Best point estimate of $\mu = \bar{x} = 13.225
$

Best point estimate of margin of error = 0.193

c)

Since sample size = 100 which is sufficiently large (Greater than 30) , it is no need to confirm that

sample data appear to be form a population with normal distribution.

8 0

3 years ago

Two gift shops sell postcards. Each gift shop charges a fixed amount per postcard. The prices, in cents, for different numbers o

Snowcat [4.5K]

1st gift shop:

120/4 = 30 cents each

180/6 = 30 cents each

390/13 = 30 cents each

2nd gift shop:

204/7 = 29.14 cents each

192/8 = 24 cents each

270 /9 = 30 cents each

360/10 = 36 cents each

so if both gift shops have a fixed price then the 9 post cards would be the answer since it matches 30 each like the 1st gift store

5 0

3 years ago