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3 years ago

Four students conducted a survey about sports preferences at their middle school. Each

Mathematics

1 answer:

jarptica [38.1K]3 years ago

7 0

Answer:

Ellen's survey is more representative

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Question 1 of 10

lukranit [14]

Answer:

LCM(2, 2, 2, 2, 2, 2, 2, 2, 2, 9, 1, 9, 2, 2, 2, 9, 1, 1) = 2×32 = 18

Step-by-step explanation:

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2 years ago

189.939360828 to 4 decimal places.

bazaltina [42]

Answer:

189.9394

Step-by-step explanation:

Since 6 is >= 5, the 3 thurns into a 4

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3 years ago

Perform the operation. (10x2 – 10x – 6) + (x+6)

ivann1987 [24]

Answer:

10x² - 9x

Step-by-step explanation:

(10x² - 10x - 6) + (x + 6)

10x² - 10x - 6 + x + 6

10x² - 9x - 6 + 6

10x² - 9x

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3 years ago

Element x decays radioactively with a half life of 8 minutes. If there are 530 g of element x, how long, to the nearest tenth of

enot [183]

Answer:49.9

Step-by-step explanation:

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3 years ago

Aunty Joan packs a packet of sweets to Alice and Olivia. Alice and Olivia share sweets in the ratio 7:3. Alice gives 3 sweets to

aivan3 [116]

Initially, Alice had 28 sweets and Olivia 12 sweets.

Step-by-step explanation:

First assume that Aunty Joan has x number sweets.

Alice and Olivia shared the x sweets in a ration of 7:3, this means

Alice had 7/10 x sweets and Olivia had 3/10 sweets.

Alice gives 3 sweets to Olivia, Alice will remain with ;

$\frac{7}{10} x-3$

Then the new ratio changes to 5:3 which means Alice will have 5/8 x number of sweets.

Equate the number of sweets for Alice in the two cases, which is

$\frac{5}{8}x=\frac{7}{10} x-3\\ \\\frac{7}{10} x-\frac{5}{8} x=3\\$

$\frac{56x-50x}{80} =3\\\\\\\frac{6}{80} x=3\\\\\\6x=80*3\\\\\\x=240/6\\\\x=40$

So there were 40 sweets at first

Using the ratio of 7:3 then

Alice had 7/10 *40 = 28 sweets

Olivia had 3/10*40= 12 sweets

Alice gave Olivia 3 sweets, so she will remain with 28-3 =25 sweets. Olivia will now have 15 sweets.The new ratio will be 25:15 simplified as 5:3.

Learn More

Ratio : brainly.com/question/11095585

Keywords : Ratio

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5 0

3 years ago