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3 years ago

Select a counter-example that makes the conclusion false. 3is prime, 5 is prime, 7 is prime

Mathematics

2 answers:

Butoxors [25]3 years ago

3 0

5^3+7

Hope i helped.

fiasKO [112]3 years ago

3 0

Counter example:

The odd number 9 is composite because it is divisible by 3 as well as 1 and 9.

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The dot plot shows the number of hours each week that students in after-school sports spent at practice. Which describes the spr

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A bus travels through the city and stops every mile. The first stop on the route is the 8th Avenue Coffee Shop, which is located

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C. The answer is not correct. The student did not compute the sums of the horizontal and vertical directions correctly.

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3 years ago

Two women start at the same point. they walk in opposite directions for 3 meters, then turn right and walk another 4 meters. how

8_murik_8 [283]

The total distance between the two women would simply be the sum of the hypotenuse formed by the triangular path they created.

For each women:

c^2 = 3^2 + 4^2

c^2 = 9 + 16

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Therefore the distance between the two is:

distance between the two women = 2 * c

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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

#LearnwithBrainly

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3 years ago

10 less than three times a number is 23. Find the number

Charra [1.4K]

Answer:

x=11

Step-by-step explanation:

10 less than three times a number is 23

3x-10=23

3x=33

x=11

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3 years ago

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