All categories

3 years ago

Given that a, b and c are positive integers, and abc=210, what is least possible sum for a+b+c

Mathematics

1 answer:

Vesnalui [34]3 years ago

7 0

Answer:

The least possible sum for a+b+c is 18.

Step-by-step explanation:

As given a,b and c are positive integers and abc = 210

So, let us consider some situation in which the product abc = 20

If a, b and c are 5, 6 and 7 then

abc = 210 & a+b+c = 18

If a, b and c are 3, 7 and 10 then

abc = 210 & a+b+c = 20

If a, b and c are 7, 15 and 2 then

abc = 24 & a+b+c = 24

If a, b and c are 2, 5 and 21 then

abc = 210 & a+b+c = 28

From all of the above situation the least sum is 18 when a, b and c are 5, 6 and 7 respectively.

You might be interested in

Can any one answer everything

Roman55 [17]

I don’t really understand for question 11 to 13

3 0

3 years ago

A) Work out the value of angle x.<br>X<br>X=<br>b) Give reasons for your answer.

Dmitriy789 [7]

Answer:

x = 60° (Alternate angles)

Step-by-step explanation:

a) x = 60°

b) Reason: Alternate angles

5 0

3 years ago

Find an ordered pair that is solution for linear equation 4x-5y=20

Eduardwww [97]

Answer:

(5,0) is the solution of the given equation.

(0,-4) is the solution of the given equation.

Step-by-step explanation:

Here, the given equation is: 4 x- 5y = 20

Now, we need to find a value for (x,y) such that the above equation is satisfied.

The ONLY POSSIBLE way to do this is Hit and Trial.

Let us substitute x = 0

Then the equation becomes : 4 (0) - 5y = 20

or, -5 y = 20 ⇒ y = -20/5 = - 4

So, for x = 0, y = - 4

So, (0,-4) will be the solution of the given equation.

Let us substitute y = 0

Then the equation becomes : 4 (x) - 5(0) = 20

or, 4 x = 20 ⇒ x = 20/4 = 5

So, for x = 5, y = 0

So, (5,0) will be the solution of the given equation.

We can try another substitution as well.

For any value of x, we will get a corresponding value of y. So, (x,y) will be the solution of the given equation.

8 0

3 years ago

jim can plant 8 trees in 18 hours. kinda can plant 8 trees in 9 hours. how long will it take him and linda working together to p

algol [13]

Answer:

Jack plants 20 more trees than Jim.

4 0

4 years ago

Read 2 more answers

in the morning kylie drove to the store and used 7/10 of a gallon of gas. In the afternoon, she drove to the movie theater and u

Dimas [21]

Alright so all we are doing is adding 7/10 and 1/2
But sometimes that can be difficult because they don’t have the same denominator
In that case, we want to give them the same denominator (bottom number if the fraction)
So we do this by multiply 1/2 by 5/5 which will get you 5/10
We now have 5/10 and 7/10 which both have the same denominator (10)
So add them together and you will get 12/10
Now that’s more than 1 gallon so let’s figure out how much more
So 12/10 -10/10 (full gallon) = 2/10
So she used 1 2/10 gallons
If you want it in decimal form then it’s 1.2 (divide 2 by 10)
Hope that helped!

8 0

4 years ago

Read 2 more answers