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alisha [4.7K]
4 years ago
9

a task completed by 30 persons in 4 days. in how many days, the same will be completed by 40 persons?

Mathematics
1 answer:
Anuta_ua [19.1K]4 years ago
7 0
Basically to solve this you do:
Time1*Worker1=Time2*Worker2
Thus Time1=4, Worker1=30, Worker2=40
4*30=40*Time2
Time2=4*30/40
Time2=3 days
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Determine the point of intersection of the lines y = - 5/2 x and y = -x + 3 by graphing.
jeka94

Answer:

intersection point (-2,5)

Step-by-step explanation:

the line y = - 5 / 2 x    you do the reciprocal which gets you x = -2    y = 5

5 0
4 years ago
Anybody know number 11??
PIT_PIT [208]

The property shown in #11 is the Associative Property of Addition.

In short, the associative property of addition states that no matter how an additive expression is grouped, the quantity will turn out the same. In this case, the answer is going to be equal whether you decide to add 5 and 8 first or 8 and 11 first.

5 0
4 years ago
A kite is flying 9.75 feet above a lamp post that is 84 2/3 feet tall. How high is the kitchen flying?
Elden [556K]

The kite is flying at the height of 94 5/2 feet.

Combining objects and counting them as one big group is done through addition. In arithmetic, addition is the process of adding two or more integers together. Addends are the numbers that are added, while the total refers to the outcome of the operation.

= 9.75 +84 2/3                                               { 9+0.75 = 9.75   84 2/3}

= 9 + 0.75 +84 2/3                                           { a+b+c+d = a+c+b+d}

= 9 + 84 + 3/4 + 2/3

=93 + 3*3 / 4*3 + 4*2 / 4*3

= 93 + 9/12 + 8/12

= 93 + 17/12

= 93 + (1 + 5/12)

= 94 + 5/12

=94 5/12 feet

{kite height = (post height + the height of the kite above the post)

To learn more about addition from given link

brainly.com/question/24536701

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8 0
2 years ago
Is a theater there are 28 rows in each row there are 32 seats, each ticket coasts £19.75
DedPeter [7]

Answer:

£17696

Step-by-step explanation:

28*32= 896

896*19.75= 17696

7 0
3 years ago
Read 2 more answers
Which equation is equivalent to StartRoot x squared + 81 EndRoot = x + 10?
marishachu [46]

The given equation is equivalent to Option D .

The mission option is

A. x+10= x+10

B. x+9 =x² + 20x + 100

C. x² +81 = x² + 100

D. x² + 81 = x² +20x + 100

<h3>What is an Equation ?</h3>

An equation is a mathematical statement formed when two algebraic expression is equated by an equal sign .

An equation is given in the question

\rm \sqrt{x^2 + 81} = x +10

\rm {x^2 + 9^2} = (x +10)^2

\rm {x^2 + 81} = x^2 +20x + 100

Therefore the given equation is equivalent to Option D .

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brainly.com/question/10413253

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5 0
2 years ago
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