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Brrunno [24]
3 years ago
12

A number decreased by 7%

Mathematics
2 answers:
Mariulka [41]3 years ago
7 0
X-7/100
OR
X-0.07
Since we don't know the number we need a variable which can be any alphabet so I chose "X".
For example if it were 7 decreased by 7 percent, it would be equal to:
7 - 7/100=6.93
Anarel [89]3 years ago
7 0
93 x
--- = ------

100 Full Number

*****************

93(full number) = 100x
Then divide by 100

*****************

Here is an Example:

93(10) = 100x
930 = 100x
Divide each side by 100

9.3


P.S
The reason the answer isn't 7 is because it's not 70%
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The width of a rectangle is X centimetres. the length of the rectangle is (X+5) centimetres.
Oliga [24]

Answer:

12 cm

Step-by-step explanation:

width = x

length = x + 5

perimeter = 38cm

perimeter = length + width + length + width

x + 5 + x + x + 5 + x = 38

4x + 10 = 38

4x = 28

x = 7

length = x + 5 = 7 + 5 = 12

6 0
3 years ago
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What is the product? (x 3)(2 x minus 1) 2 x squared minus 3 2 x squared 6 x 2 x squared 5 x minus 3 2 x squared 6 x minus 3.
prohojiy [21]

The product of the function is 2x^2+ 5x - 3

We are to find the product of the functions x + 3 and 2x -1

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Taking the product:

f(x)g(x) = (x+3)(2x -1)

f(x)g(x) = x(2x) - x(1) + 3(2x) + 3(-1)

f(x)g(x) = 2x^2 - x + 6x - 3

f(x)g(x) = 2x^2+ 5x - 3

Hence the product of the function is 2x^2+ 5x - 3

Learn more on product of functions here: brainly.com/question/25638609

5 0
3 years ago
ABC city residents vote on construction of a new playground. The number of votes in favor of playground was 3500
zubka84 [21]

Answer:

70% in favor of building a new playground  

<em>3500 (</em><em>in favor</em><em>) + 1500 (</em><em>against it</em><em>) = 5000 (</em><em>total number votes</em><em>)</em>

<em />

<em>3500 (</em><em>in favor</em><em>)                                              1500 (</em><em>against it</em><em>)</em>

<em> -------------------    = 0.7 / 70%                          -------------------     =0.3 / 30%</em>

<em>5000 (</em><em>total</em><em>)                                                      5000 (</em><em>total</em><em>)            </em>

8 0
3 years ago
PLZ HELP IMPORTANT!
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After you've calibrated the sprayer to know your application rate in gallons per acre, divide that number into the gallons applied with each tankful to find how many acres each tankful covers. Then, multiply the acres per tank by the herbicide needed per acre to find the herbicide to put in each tankful.

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4 0
3 years ago
Tim runs 3 miles every 45 minutes. At this rate, how long did it take Tim to run 18 miles?
geniusboy [140]

Answer: 270 minutes or 4 hours and 30 minutes

Step-by-step explanation: 3x6 =18  and 45 x 6= 270

7 0
3 years ago
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