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harina [27]
3 years ago
12

Write an expression for the calculation subtract 10 divided into fifths from 20 diveded in half

Mathematics
1 answer:
vredina [299]3 years ago
5 0
20/2-10/5. You divide 20 by 2 and subtract that from 10 divided by 5
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A rectangular plot of land that contains 1500 square meters will be fenced and divided into two equal portions by an additional
photoshop1234 [79]
Let the length be x and the width be w

The perimeter will be:
2x+3w=1500

thus
3w=(1500-2x)
w=(1500-2x)/3
w=500-2/3x

The area will be:
A=x*w
A=x(500-2/3x)
A=500x-(2/3)x²

The above is a quadratic equation; thus finding the axis of symmetry we will evaluate for the value of x that will give us maximum area.

Axis of symmetry:
x=-b/(2a)
from our equation:
a=(-2/3) and b=500
thus
x=-500/[2(-2/3)]
x=375
the length will be 375 m

The width will be 250 m

4 0
3 years ago
7.
Vadim26 [7]

Answer:

2,160

Step-by-step explanation

x=12

18,000=100

x= 2,160

8 0
2 years ago
Read 2 more answers
a fence post is 13 feet tall. a chain is attached to the fence post and fastened to the ground 7 feet from the base of the fence
marissa [1.9K]
You draw a diagram of the fence post and then you use the measurements to find the length of the chain using the pythagorean theorem. The answer is \sqrt{218} or 14.8

8 0
3 years ago
What is the value of 3 in the number 1,234,897?
luda_lava [24]

Step-by-step explanation:

30000 place value

3 face value

8 0
2 years ago
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Micah rows his boat on a river 4.48 miles downstream, with the current , 0.32 hours. He rows back upstream the same distance, ag
pentagon [3]
Short Answer: Current speed  =  3 miles per hour.
Givens
Downstream 
d = 4.48 miles
t  = 0.32 hours.
c = ??
r_boat = ??


Upstream
d = 4.48 miles
t = 0.56 miles
c = ??
r_boat =??

Equations. 
Since the distances are the same, you can equate the distances and come back to them later.
d = r*t
(r - c) * 0.56 = (r + c) * 0.32  This will give you r in terms of c. Notice the minus sign on the left. It's there because the current is going against you, slowing you down.  
Remove brackets
0.56r - 0.56c = 0.32r + 0.32c   Add 0.56c to both sides.
0.56r = 0.32r + 0.32c + 0.56c
0.56r = 0.32r + 0.88c               Subtract 0.32r from both sides.
0.56r - 0.32r = 0.88c
0.24r = 88c                               Divide by 0.24  
r = 0.88/0.24 c
r = 3 2/3 c

Now we have enough information to solve for c

4.48/(r + c) = 0.32
4.48 = 0.32 * (r + c)           Substitute r = 3 2/3c into this equation.
4.48 = 0.32 * (3 2/3c + c)   Add c and 3 2/3c together. 
4.48 = 0.32 * (4 2/3c)        Change 4 2/3 to  14/3
4.48 = 0.32 * 14/3 c 
4.48 = (4.48 / 3 ) * c
4.48 = 1.493333333 c      Divide 4.48 by 1.493333333
c = 4.48 / 1.4933333
c = 3 mph <<<<<<<<<<<<<<Answer

5 0
3 years ago
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