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Crazy boy [7]
2 years ago
8

Natasha bought a tennis racket that was marked down by 20%. If the racket was originally priced at $125, how much did Natasha pa

y?
A
Natasha paid $100.

B
Natasha paid $25.

C
Natasha paid $80.

D
Natasha paid $45.
Mathematics
1 answer:
saveliy_v [14]2 years ago
8 0

Answer:

A. 100$

Step-by-step explanation:

take 125 and multiply it to .20 (this is 20% in decimal form) this gives you 25. you know subtract 25 from 125 which gives you 100.

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Algebraic expression and identity 1)simplify the following (3a+b)3 +(3a-b)3
mylen [45]

Answer:

(3a+b)^3+(3a-b)^3=54a^3+18ab^2

Step-by-step explanation:

Given: (3a+b)^3+(3a-b)^3

Formula: x^3+y^3=(x+y)(x^2-xy+y^2)

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

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

x\rightarrow 3a+b

y\rightarrow 3a-b

\Rightarrow (3a+b+3a-b)((3a+b)^2-(3a+b)(3a-b)+(3a-b)^2)

\Rightarrow (6a)(9a^2+b^2+6ab-9a^2+b^2+9a^2+b^2-6ab)

\Rightarrow (6a)(9a^2+3b^2)

\Rightarrow 54a^3+18ab^2

5 0
3 years ago
Tyra wants to arrange 32 tiles in equal rows and columns. How many ways could she organize the tiles? List the factors.
Black_prince [1.1K]
1,32 2,16, 4,8
That's all I got so it's 3
Sorry if I got it wrong or missed some
4 0
3 years ago
Use the Parabola tool to graph the quadratic function. f(x)=2x^2−12x+19 Graph the parabola by first plotting its vertex and then
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To find the vertex of our parabola, we are going to use the vertex formula: For a quadratic of the form f(x)=x^2+bx+c it vertex (h,k) is given by h= \frac{-b}{2a}, k=f(h).
We can infet from our parabola that a=2 and b=-12. So lets replace those values in our formula:
h= \frac{-b}{2a}
h= \frac{-(-12)}{2(2)}
h= \frac{12}{4}
h=3
k=f(h)=2(3)^2-12(3)+19
k=2(9)-36+19
k=18-17
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The vertex (h,k) of our parabola is (3,1)

Now to find our second point, we are going to evaluate our parabola at x=0
f(0)=2(0)^2-12(0)+19
f(0)=0+0+19
f(0)=19
Our second point is (0,19)

We can conclude that we can graph the parabola f(x)=2x^2-12x+19 using its vertex (3,1) and the point (0,19) as follows: 

7 0
3 years ago
PLEASE HELP PLEASE (dont do links)
miss Akunina [59]

Answer:

B

-2(0)²+24(0)-54

= -54

5 0
3 years ago
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A cyclist rides her bike at a rate of 30 kilometers per hour. What is this rate in kilometers per minute? How many kilometers wi
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5 kilometers for 10 minutes
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0.5*10 minutes= 5 kilometers for 10 minutes
5 0
3 years ago
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