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Semenov [28]
3 years ago
6

A man can harvest his farm in 18 hours. his son can harvest the same farm in 12 hours. how long will it take them working togeth

er?]
Mathematics
2 answers:
Oxana [17]3 years ago
7 0
Answer: 7.2 hour

Explanation:

\textnormal {Both of them work together =}  \cfrac{18 \times 12}{18 + 12} = 7.2 \textnormal { hours}

yanalaym [24]3 years ago
5 0
I think you would do 18+12=30 and half of 30 is 15 so,They would only work 15 hours.
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How to solve 2 3/4 - 1 5/8
daser333 [38]

Answer:

1 1/8

Step-by-step explanation:

First, Make the first fraction into a new one with an equal denominator. (3/4 x2= 6/8)

Then, subtract the whole numbers (2-1=1) and the fractions (6/8-5/8= 1/8)

Lastly, add your two differences together and you get 1 1/8.

6 0
3 years ago
4 cats each ate 1/4 cup of canned food and 1/4 cup of dry food. how much food did they eat altogether
VashaNatasha [74]

Answer: 1 cup canned and 1 cup dry, 2cups put together

Step-by-step explanation:

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3 years ago
Ali, Ben and Clare each played a game. Clare's score was seven times Ali's score. Ben's score was half of Clare's score. Write d
Lerok [7]

Answer:

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8 0
3 years ago
Explain how to determine the zeros of f(x)=(x+3)(x-1)(x-8)
spin [16.1K]

Answer:

x=-3,  x=1,  x=8

Step-by-step explanation:

When you have to find the zero of an equation like (x+3) all you have to do is solve for x.

x+3=0           equal the equation to zero

x+3-3=0-3    cancel out 3

x=-3              answer


If you have to find the zero of an equation like f(x)=-2x^2 - 5x + 7 then you would have to factor the equation.

7*-2=-14   multiply

-7 & 2   find the two numbers that when multiplied =14 and when added = -5

(2x^2 + 2)  (-7x + 7)  replace -5 with -7 & 2

-2x (x - 1)   -7 (x - 1)   factor

(x - 1)   (-2x - 7)    rewrite

1st: x - 1 = 0

          x = 1 : Answer

2nd: -2x - 7= 0

        -2x - 7 + 7 = 0 + 7

        -2x = 7

        -2x / -2 = 7 / -2

          x = 7 / -2 : Answer





7 0
3 years ago
Read 2 more answers
Janice has car insurance that she must pay four times a year. If each payment is $156, how much money should she set aside each
charle [14.2K]

Answer: 39

Step-by-step explanation:

156/4

4 payments

Total 156

So divide that and you will get 39

5 0
2 years ago
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