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lara31 [8.8K]
3 years ago
12

Help me solve this problem please

Mathematics
1 answer:
aleksklad [387]3 years ago
8 0

Answer:

(2,5) is right answer ok

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A website that sells movie tickets can tell what devices are used to access their site and make purchases. The manager of the we
LiRa [457]

Answer:

The best estimate for the proportion of ticket buyers that make purchases using their smart phones is 0.45.

Step-by-step explanation:

We take the estimate from the website, and expand for all buyers, to find the proportion that use their smartphones.

400 users of the website were randomly sampled from the existing database and 180 were found to have used their smart phones.

180/400 = 0.45

The best estimate for the proportion of ticket buyers that make purchases using their smart phones is 0.45.

4 0
3 years ago
Un jardinier a récolté deux quintaux trois quarts de pommes . Il vend un quintal un quart à un voisin ; il vend aussi 7/10 de qu
Flauer [41]

Answer:

Step-by-step explanation:

Notez que: un quintal =

une unité de poids égale à 100 kg

Un jardinier a récolté deux quintaux et trois quarts de pommes.

Le nombre total de pommes récoltées = 200 kg + 3/4 du quintal de pommes

= 200 kg + 0,381 kg

= 200,381 kg

Il vend un quintal un quart à un voisin

Le montant qu'il a vendu à un voisin = 100 + 1/4 quintal de pommes

100 + 0,127

= 100,127 kg

Il vend également 7/10 d'un quintal sur le marché du village

= 7/10 × 100 kg

= 70 kg de pommes restantes

2/5 d'un quintal à un pâtissier.

2/5 × 100 kg

= 40 kg de pommes restantes

À l'aide d'une fraction, exprimez la quantité de pomme que le jardinier a gardée pour lui.

La quantité que le jardinier lui a réservée =

200 3/4 kg - (100 1/4 kg + 70 kg + 40 kg)

200,381 kg - (210,127 kg)

5 0
3 years ago
You are diving. It’s represented by h(t)= -2.5t + 35. What’s the height of the platform ___________ft? Show steps plz... NEED HE
VashaNatasha [74]

Answer:

welll the answer is 32.5 as used in the expression

Step-by-step explanation:

-2.5 plot it on a line graph then cooridinate the x and y axis to 35 and add the summ up to get 32.5

7 0
3 years ago
Read 2 more answers
Please help! (question in attachment)
igor_vitrenko [27]
Ayy you got it right thank you very much your
5 0
3 years ago
Please help im so confused
MArishka [77]

Answer:

i

Step-by-step explanation:

i = \sqrt{-1}

i^2 = -1

i^3 = -i

i^4 = 1

(Make sure you know your exponent rules)

i^4^1 = i^4^0 * i = (i^1^0)^4 * i \\i^4 = 1 \\i^1^0 * i *1 \\i^1^0=1\\1*1*i=i

3 0
3 years ago
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