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AURORKA [14]
3 years ago
9

Find the percent change from 72 to 90

Mathematics
2 answers:
steposvetlana [31]3 years ago
7 0
25
is the percent change
vovangra [49]3 years ago
4 0
The correct answer is = 25%
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Sue can ride her bike 14 km/hr faster than she can walk. It takes 17.5 min longer to walk 2.5 km
alekssr [168]

Answer:

6 km/hr

Step-by-step explanation:

Sue can ride her bike 14 km/hr faster than she can walk. So for each step, add 14 km/hr.

Solve

-17.5r^2-245r+2100=0 \\\\r^2+14r-120=0 \\\\(r-6)(r+20)=0\\\\

Therefore, it is 6.

5 0
3 years ago
A hotel has a pool in the shape of a rectangle. The pool is 8 m long, 3 m wide, and 2,000 cm deep. What is the volume of the poo
Maslowich
Ok, first you need to change the 2,000 cm into meters and then you just multiply all the sides.
4 0
4 years ago
Find the value of c such that the expression is a perfect square trinomial
Alika [10]

Answer:

c = 4

Step-by-step explanation:

In a perfect square trinomial, the following relationship is true:

(x+y)^2=x^2+2xy+y^2

In order for the given expression to be a perfect square trinomial:

x^2=x^2\\4x=2xy\\c=y^2

Solving for 'c':

4x=2xy\\y=2\\c=y^2=2^2\\c=4

Therefore, c must be equal to 4.

6 0
3 years ago
PLEASE ANSWER
snow_tiger [21]

Answer:

$70.59

Step-by-step explanation:

  1. 15% of $83.05 = 12.4575
  2. $83.05 - $12.4575 = $70.59

I hope this helps!

4 0
3 years ago
Read 2 more answers
The figure shown is a regular octagon. The measure of <br> What is the measure of
emmainna [20.7K]

Answer:

135°

Step-by-step explanation:

X is also 135°    as is S  , T  U , V, W and Y

5 0
2 years ago
Read 2 more answers
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