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3 years ago

12 workers build a wall in 10hours. How long do 5 workers build a wall

Mathematics

2 answers:

snow_lady [41]3 years ago

5 0

Answer:

24 hours

Step-by-step explanation:

If 12 workers take 10 hours to build a wall, assuming they build at the same rate, it would take one worker 120 hours to build a wall.

By this logic, it would take 120/5 or 24 hours for 5 workers to build a wall

andre [41]3 years ago

5 0

5 workers will build a wall in 24 hours.

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<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B%20%5Csqrt%7B9%7D%20%7D%20" id="TexFormula1" title=" \frac{1}{ \sqrt{9} }

olga2289 [7]

Answer:

rational

Step-by-step explanation:

In mathematics, a rational number is a number that can be expressed as the quotient or fraction pq of two integers, a numerator p and a non-zero denominator q.

Now √9=3=31=62=93 and so on. Where both numerator and denominator are positive integers.

So, we can say that 1/√9 is a rational number.

6 0

3 years ago

The decimal equivalent of rounded to the nearest hundredth is A.0.7143 B.0.714 C.0.70 D.0.71

NeX [460]

Answer:

The answer would be D because hundredth would be 2 numbers behind the decimal which would leave C&D but the zero behind C would just round the number to .7 so the answer is D

Step-by-step explanation:

7 0

3 years ago

I need help please!

kirill115 [55]

Answer:

0.0466

Step-by-step explanation:

For a random variable X which follows a binomial distribution:

$n = 7\\p = 0.35$

Thus,

$P(X=5)={7\choose5}(0.35)^5(1-0.35)^{7-5}\\P(X=5)={7\choose5}(0.35)^5(0.65)^{2}\\P(X=5)=0.0466$

4 0

3 years ago

A triangle has vertices at points (0,0). (a, b), and (2a, 0). Select all points that lie on the sides of the triangle.

Sunny_sXe [5.5K]

Answer:

A. (a,0)

D. (a/2, b/2)

Step-by-step explanation:

Let's assume a and b means x and y coordinate if the x and y axes.

So the coordinates are now (0,0) ,(x,y) , (2x,0)

So all point from 0 to 2x lies on the sides of triangle

And all points from 0 to y lies on the

sides of the trianglee.

So we have three. Equation of the triangle .

One is x= y

So (a/2, b/2) is correct.

Second is 2x = 0y

So (a,0) is correct.

6 0

3 years ago

A cone has a diameter of 12 ft and a slant height of 20 ft. Explain whether tripling both dimensions would triple the surface ar

Ratling [72]

<span>Tripling both dimensions would NOT triple the surface area. If you triple both dimensions, then the surface area is 9 times as long as the surface area of original cone.</span>

8 0

3 years ago

12 workers build a wall in 10hours. How long do 5 workers build a wall​

12 workers build a wall in 10hours. How long do 5 workers build a wall