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2 years ago

Jerry thinks that x < 4 is a solution to the following inequality: 2x + 10 < 4x - 20

Mathematics

1 answer:

I am Lyosha [343]2 years ago

7 0

Answer:

x>15

Step-by-step explanation:

Given the inequality: 2x + 10 < 4x - 20

Collect like terms

2x-4x<-20-10

-2x<-30

x > -30/-2

x>15

Hence the solution is x>15

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Explain 15 is not a prime factor

MissTica

15 is not a prime factor as it is divided by 1,3,5 and 15.

Additional information:

Prime numbers are those numbers which can only be divided by itself .for instance:1,2,3,5,7 ,11,13 etc.

Composite number s are those numbers which can be also divided by other numbers,For instance: 4,6,8,10 etc

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2 years ago

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3 years ago

Thinking—Level 2 Get Started! Exit A farm raises cows and chickens. The farmer has a total of 40 animals. One day he counts the

dsp73

Answer:

21 pieces of chickens.

Step-by-step explanation:

Given:

The farmer has a total of 40 animals. ( cows and chicken )

He counts the legs of all his animals and realizes he has a total of 118 legs.

Question asked:

How many chickens does the farmer have ?

Solution:

Let number of chickens = $x$

Then number of cows = $40-x$

Now, as here given that total number of legs are 118 of all the animals, and as we know that a chicken has two legs and cow has four legs, hence the equation will be :

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By adding both sides by minus

$42 = 2x\\$

By dividing both sides by 2

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Hence, farmer have 21 pieces of chickens.

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2 years ago

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luda_lava [24]

Answer: B

Step-by-step explanation:

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