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3 years ago

Please help find the percent of decrease?!

Mathematics

2 answers:

Maslowich3 years ago

5 0

you should get 29% for your answer on this one

Paul [167]3 years ago

4 0

The easiest way to do do this is to first find out how much % 500 is of 700

first, we can just set it up as a simplified fraction
$\frac{7}{5}$
which is equal to..
$1.4$

then we divide 100 by this number
$100 \div 1.4 = 71.4285...$

*now to check*
multiply the quotient by .01 to get .7142...

then multiply that by 700

we should get a product of 500, confirming our answer

now that we're sure, subtract 71 from 100 to find the percentage decrease

$amswer = 29\%$

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The length of a rectangular field is twice its breadth. If the perimeter of the field is 150m . Find the dimensions of the recta

avanturin [10]

Answer:

length=50m

width=25m

Step-by-step explanation:

perimeter is the distance all round,hence

2(l+w)=2(2x+x)=

4x+2x=6x=150

6x=150x

x=25

l=50m

w=25m

6 0

3 years ago

1. Rewrite the equation 5(x - 3) = x + 13 with 6 substituted for x. Write a

soldier1979 [14.2K]

Answer:

Step-by-step explanation:

5(6-3)=6+13 -simplify

30-15=6+13

15=19

x doesnt equal 6

5(x-3)=x+13

5x-15=x+13

4x=28

x=7

4x=28

4(7)=28

28=28

4 0

3 years ago

Among all pairs of numbers with a sum 57 find the pair whose product is maximum

GarryVolchara [31]

We know that

<span>comparing the problem with the geometry, the rectangle with the largest area (maximum product of two numbers) is the square.
therefore
The pair of numbers, for 57, is 57/2 or 28.5
so
28.5+28.5----------> 57
28.5*28.5-----------> 812.25

the answer is
</span><span>the pair is 28.5 and 28.5</span>

3 0

3 years ago

Which is the minimum or maximum value of the given function? a. The function has a minimum value of -2 b. The function has a min

Alex17521 [72]

Answer:

The function f(x) is not given, I used a different function but the approach and steps is the same .

Step-by-step explanation:

Given the function f(x) = 2x2 - 8x + 5

compare with the normal quadratic equation ; ax2 + bx + c = f(x)

a = 2, b = -8 and c = +5

since a is greater than zero i.e a > o {positive}

As such, it has a minimum

hence for minimum value; x = -b/2a

x = -(-8)/2 x 2

x = 8/4 = 2

plugging the values of x in f(x) ; f(2) = 2(2)^2 -8(2) + 5

f(2) = -3, hence it has minimum value and the minimum value is -3

3 0

3 years ago

Aliza plays basketball every Tuesday and

Lemur [1.5K]

Answer:

4 days

Step-by-step explanation:

June starts on Monday

for 30days we have 4 weeks starting from Monday to Sunday and extra 2 days which are Monday and Tuesday

so we have 5 mondays and tuesdays

4 wed, thu, fri, sat, sun

Aliza played piano on june1 monday

So aliza played basketball on 5 tues + 4 thurs = 9 days

for calculating both basketball and paino

piano day should be on tuesday or thursday

from the below picture u can see pink dots are piano days

and yellow circles are both piano and basketball days

so on alternate weeks they are coinciding

so there are 4 days

3 0

2 years ago