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anzhelika [568]
3 years ago
10

Eva bought a book that was on sale for 20% off the retail price. The retail price of the book was $12. What was the price Eva pa

id for the book?
Mathematics
1 answer:
sp2606 [1]3 years ago
7 0

Answer:

$2.4

Step-by-step explanation:

12×20/100

240/100

2.4

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On the integral of 1 to 9, what is sqrtx in respect to x?
RideAnS [48]
\bf \displaystyle \int\limits_{1}^{9}\ \sqrt{x}\cdot  dx \iff\displaystyle \int\limits_{1}^{9}\ x^{\frac{1}{2}}\cdot  dx
\\\\\\
\cfrac{x^{\frac{1}{2}+1}}{\frac{1}{2}+1}\implies \cfrac{x^{\frac{3}{2}}}{\frac{3}{2}}\implies \left. \cfrac{2\sqrt{x^3}}{3} \right]_{1}^{9}

you tell  us
8 0
3 years ago
Read 2 more answers
Answers to this equation
Tju [1.3M]

Answer:

for completing the square it would be

(x + x) ^{2}  - 13

however if you were to find the roots it would

be

x = 2.60555127  \: and \:  - 4.60555127

however the picture is unclear on what to do so these may help

3 0
3 years ago
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A verbal description of a linear function f is given. Express the function f in the form
Lerok [7]

The linear function g which has a rate of change of -16 and initial value 600 is; g = -16x + 600.

<h3>What is the linear function which is as described?</h3>

It follows from the task content that the linear expression which is as described by the given verbal description is to be determined.

Since the standard slope-intercept form of a linear function is as given; f(x) = ax + b.

Where, a = slope (rate of change) and b = y-intercept (initial value).

Therefore, the required linear function which is as described is;

g = -16x + 600

Read more on linear functions;

brainly.com/question/15602982

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6 0
1 year ago
Plzzzz help me on this
Grace [21]
Answer: 228 feet squared

How: To get the area of the entire field, multiply 25•36 to get 900. To find length of the area inside the path, you have to subtract 2 feet from both sides of 25, which is also 4 feet, to get 25-4=21. To find the width of the area inside the path, you have to subtract 2 feet from both sides of 36, which is also 4 feet, to get 36-4=32. You multiply 21•32 to get 672, which is the area of the field inside of the path. To find the area of the path, you subtract the total area of the field and the path together, which is 900, by 672 to get 228 feet squared.
7 0
3 years ago
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Let f(x) = cos(x) + 2x.<br> Where does f have critical points?
adell [148]

Answer:

<em>f</em> has no critical points.

Step-by-step explanation:

We are given:

f(x)=\cos(x)+2x

A function has critical points whenever its derivative equals 0 or is undefined.

Differentiate the function:

f'(x)=-\sin(x)+2

Since this will never be undefined, solve for its zeros:

0=-\sin(x)+2

Hence:

\displaystyle \sin(x)=2

Recall that the value of sine is always between -1 and 1.

Thus, no real solutions exist.

Therefore, <em>f</em> has no critical points.

6 0
3 years ago
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