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zheka24 [161]
3 years ago
7

What would John pay for a CD player that sells for $550is discounted by 15%?​

Mathematics
1 answer:
Natalka [10]3 years ago
6 0

Answer:

$467.5

Step-by-step explanation:

15%=15/100=0.15

0.15*the original price=82.5

john will pay $550-$82.5=$467.5

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Does this image have a set of inputs to a set of possible outputs where each input is related to exactly one outputs Yes or No?
borishaifa [10]

Answer: Yes

This graph passes the vertical line test. This is a test where we try to draw a single vertical line through more than one point on the curve. In this case, such a thing is not possible. Any input x leads to exactly one output y. This graph is a function.

3 0
3 years ago
Hey guys<br>im new here<br>please solve this for me with steps!<br>ill mark as the best answer​
Vinil7 [7]

Answer:

The factors of  2(x+y)^2-9(x+y)-5 is ((x+y)-5)(2x+2y+1)

Step-by-step explanation:

Given polynomial

=>2(x+y)^2-9(x+y)-5

To Find:

The factors of the polynomial =?

Solution:

Lets assume  k = (x+y)

Then 2(x+y)^2-9(x+y)-5 can be written as 2k^2-9k-5

Now by using quadratic formula

k =\frac{-b\pm\sqrt{(b^2-4ac}}{2a}

where

a= 2

b= -9

c= -5

Substituting the values, we get

k =\frac{-b\pm\sqrt{(b^2-4ac)}}{2a}

k =\frac{-(-9) \pm \sqrt{((-9)^2-4(2)(-5)}}{2(2))}

k =\frac{-(-9) \pm \sqrt{(81+40)}}{4}

k =\frac{-(-9) \pm \sqrt{(121)}}{4}

k =\frac{-(-9) \pm 11}}{4}

k= \frac{ 9 \pm 11}{4}

k =  \frac{20}{4}                         k =  \frac{-2}{4}    

k_1 =5                                      k_2 = -\frac{1}{2}

2k^2-9k-5= 2(k-5)(k+\frac{1}{2})

Solving the RHS we get

\frac{2}{2}(k-5)(2k+1)

(k-5)(2k+1)

Substituting k = x+y

((x+y)-5)(2(x+y+1)

((x+y)-5)(2x+2y+1)

5 0
3 years ago
If 5(x + 7)= -3, then 5x +35= -3
tensa zangetsu [6.8K]
= 5x + 35 = -3
- 35 = -35
5x = -38
/ 5 = / 5
x = -7.6
8 0
3 years ago
What are the additive and multiplicative identities for any rational number​
abruzzese [7]

Step-by-step explanation:

  • natural numbers, whole numbers, and integers zero is the additive identity
  • 1 is the multiplicative identity.

in case of rational numbers.

<h2>hope it helps.</h2><h2>stay safe healthy and happy.</h2>
6 0
2 years ago
Calculate the size of a cube​
Varvara68 [4.7K]

Answer:

<em>A</em><em> </em><em>cube</em><em> </em><em>size</em><em> </em><em>is</em><em> </em><em>150mm</em>

Step-by-step explanation:

I think it will be

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3 years ago
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