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Archy [21]
3 years ago
6

A farmer is digging a ditch across his field.

Mathematics
1 answer:
Nitella [24]3 years ago
5 0

Answer:

Let us consider that ,

The worker can complete the work in x hours .

So, he can complete 1/x part of work in 1 hour.

Now, The workers does 2/3 of what he does. So they do 2/3(1/x) part of work in 1 hour . 2/3x work in 1 hour .

Consider them all working together,

So work done in one hour, = 1/x + 2/3x + 2/3x = 3 + 4 / 3x = 7/3x .

So, They taken 1 hour to complete 7/3th part of work. So, In 3x/7 hours , They all can complete the work.

Ratio of the time taken by all instead of only one = 3x/7 : x = 3/7 .

So ,The required option is 3/7

Hope my answer helped you!

Step-by-step explanation:

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3 years ago
Factor completely. a 2 + 28a + 27 (a + 1)(a + 27) (a + 3)(a + 9) (a - 1)(a - 27)
8090 [49]

Answer:

(a+1)(a+27)

Step-by-step explanation:

Trinomials are three term algebraic expressions typically featuring variables to exponent powers. To break these trinomials down we factor them using the diamond method or GCF. The diamond method states that for a trinomial Ax^2+Bx+C multiply A*C then find two numbers which multiply to this number and add to B. When you find those numbers, write them as (x-/+ number)(x-/+number).

a^2+28a+27

A=1, C=27

A*C=27 and add to B=28 which 1 and 27 satisfy

The factors are (a+1)(a+27)


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3 years ago
Find the area of a triangle with a base length of 3 units and a height of 4 units.
Tpy6a [65]

Answer:

area of triangle

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= 1/2 × 3 units × 4 units

= 6 units²

5 0
3 years ago
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YOU GET CORRECT YOU GET BRAINLIEST!!!!!!!
Virty [35]
The answer is 6 you just divide
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3 years ago
Thirty percent of the students in a high school face a disciplinary action of some kind before they graduate. Of those students,
BaLLatris [955]

Answer:

54% of the students from the high school go on to college

Step-by-step explanation:

We have these following percentages:

30% of the students from a high school face a disciplinary action of some kind before they graduate. Of those, 40% go on to college.

70% do not face action, and of those, 60% go to college.

What percent of the students from the high school go on to college?

Sum of 40% of 30%(face disciplinary action) and 70% of 60%(do not

face disciplinary action). So

0.4*0.3 + 0.7*0.6 = 0.12 + 0.42 = 0.54

54% of the students from the high school go on to college

5 0
3 years ago
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