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Vera_Pavlovna [14]
3 years ago
8

Wilma can mow a lawn in 120 minutes. Rocky can mow the same lawn in 80 minutes. How long does it take for both Wilma and Rocky t

o mow the lawn if they are working together?
Mathematics
1 answer:
saw5 [17]3 years ago
8 0
Work in the rates  / minute 
wilma:-  in 120 minutes she mows 1 lawn
             so in 1 minute she mows 1/120 lawn

similarly, Rock mows 1/80 lawn in 1 minute

working together  1/120 + 1/80  = 1/x  where x is number of minutes working together

1/20 + 1/80 =  1/48  

so 1/x = 1/48

x = 48

answer is 48 minutes
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Faliha runs around a square field of side 70m, while Rameen runs around a rectangular field with length 90m and breadth 60m. Who
inn [45]

\huge\sf\green{Answer :- }

<h2>Given :- </h2><h2 />
  • Side of the square field = 70m

  • Length of the rectangular field = 90m

  • Breadth of the rectangular field = 60m

<h2>To Find :-</h2>

  • Perimeter of the square field

  • Perimeter of the rectangular field

<h2>Solution :-</h2>

Perimeter of the square = 4 × side

By substituting values,

⇒ 4 × 70m

➥ 280m

<h3><u>Hence, </u><u>Faliha</u><u> runs 280m around a Square </u><u>field</u></h3>

Perimeter of the rectangle = 2( length + Breadth)

By substituting values,

⇒ 2( 90m + 60m )

⇒ 2( 150m)

➥ 300m

<h3><u>Hence, Rameen runs 300m around a rectangular field</u></h3>

By comparing perimeters, Rameen runs more than Faliha

Distance runs more by rameen = Distance covered by rameen - distance covered by faliha

By substituting values,

⇒ 300m - 280m

➠ 20m

<h3><u>Hence, </u><u>Rameen</u><u> runs more around a rectangular field by 20</u><u>m</u></h3>

<u>\huge\sf\fcolorbox{red}{pink}{ItzDevilGirl}</u>

7 0
3 years ago
What is the value of x in the equation 4(2x + 12) = 0?<br><br> −8<br> −6<br> 6<br> 8
dimaraw [331]

Answer:

-6

Step-by-step explanation:

4(2x+12)=0

8x+48=0

8x=-48

x=-6

3 0
3 years ago
The cover of the book is 28 centimeters long and 18 centimeters wide.what is the perimeter of the book cover
d1i1m1o1n [39]

Answer:

the perimeter of the book cover is 504

:)

Step-by-step explanation:

7 0
4 years ago
There is a line whose Y intercept is -5 and whose slope is 0. What is its equation in slope – intercept form?
Aleonysh [2.5K]
<h2>Key Concepts</h2>
  • Linear equations
  • Slope-intercept form

Slope-intercept form looks like this: y=mx+b

  • <em>m</em> = slope
  • <em>b</em> = y-intercept

<h2>Solving the Question</h2>

We're given:

  • <em>m</em> = 0
  • <em>b</em> = -5

Plug the given values into y=mx+b:

y=0x-5\\y=-5

<h2>Answer</h2>

y=-5

6 0
2 years ago
Find an equation for the line below.<br> Help me please :(
Leokris [45]

Answer:

y=3/2x+5/2

Step-by-step explanation:

I used the Y2-Y1/X2-X1

In this equation you can see that there are 2 points (-5,-5) and (1,4)

If you substitute, you will get

4+5/1+5

9/6 and if you simplify this, you will get 3/2

Now that we have the slope, we just have to use y=mx+b

(I'm using the point (1,4))  4=3/2(1)+b

                                         4=3/2+b

                                         5/2=b

5 0
3 years ago
Read 2 more answers
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