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Vinil7 [7]
4 years ago
11

Is f(x)=x(4-x)-2 a quadratic function? Explain.

Mathematics
1 answer:
Tanya [424]4 years ago
6 0
It expands to 
4x - x^2 - 2

Yes it is quadratic.
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What is the graph of the inequality? 3x ≤ 2y - 7
BlackZzzverrR [31]

Answer:

graph is attached below.

Step-by-step explanation:

Given : equation 3x ≤ 2y - 7

We have to plot the graph for the given inequality.

Consider the given inequality 3x ≤ 2y - 7

To plot the graph we first convert inequality to equality.

then equation becomes, 3x = 2y - 7  

We find the points to plot this line,

at x = 1

⇒ 3(1) = 2y - 7

⇒ 3 = 2y - 7

⇒2y = 10

⇒ y = 5

at x = 3

⇒ 3(3) = 2y - 7

⇒ 9 = 2y - 7

⇒2y = 16

⇒ y = 8

at x = 5

⇒ 3(5) = 2y - 7

⇒ 15 = 2y - 7

⇒2y = 22

⇒ y = 11

Thus,   points are (1 , 5) , (3,8) and (5 , 11)

Now we plot these points and obtained the graph of line 3x = 2y -7

For region to be shaded take a test point and check whether it satisfy the given given inequality or not.  

Let point be (-3, 0)

Substitute x= -3 and y = 0, we get

3(-3) ≤ 2(0) - 7

⇒ -9 ≤  - 7  (true)

Graph plot is as shown below.

3 0
3 years ago
Read 2 more answers
What value is equivalent to −2 × 32 − 8 ÷ 2 + 6? A) -18 B) -16 C) -7 D) 7
disa [49]

Answer:

None of those values are equivalent to that problem. The problem you have written is equal to -62, so maybe you have the equation written wrong.

8 0
4 years ago
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Donna wants to create a stained glass window composed of one quarter circle two semi circles and one parallelogram which measure
Dmitrij [34]

Answer:

Wheres the picture so show the measurements

Step-by-step explanation:

7 0
3 years ago
PLEASE HELP ME.The following table shows the distance from Tessa's house to several different locations. Location School Library
Katen [24]

Answer:

20

Step-by-step explanation:

8 0
3 years ago
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Fernando has a savings account balance of $2,471.23. The interest rate on the account is 2.4% compounded quarterly. If he opened
Olin [163]
You will need a formula for compound interest solved for principal. (See attached).
Principal =<span> $2,471.23 / (1+ (.024/4)^4*9
</span>
Principal =  $2,471.23 / <span> <span> <span> 1.2403016056 </span> </span> </span>
Principal =  <span> <span> <span> $1,992.44</span></span></span>
(I checked this with an online compound interest calculator to check this - it is correct.)

6 0
4 years ago
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