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tester [92]
3 years ago
12

Brainliest + Points!

Mathematics
1 answer:
LenaWriter [7]3 years ago
3 0
Hey refer to attachment!!!

Draw straight line from 220 (in thousands ) to the plotted line. Draw line parallel to x-axis from point where it touches the plotted line to the y -axis.

It'll automatically meet at 500 which is the answer..

All you need to do is to see the graph carefully.

Hope it helps *_*

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Find the vertex of the given quadratic function.
AleksandrR [38]

Answer: Choice B. The vertex is (6,-4)

=======================================================

Work Shown:

Step 1 is to expand out (x-8)(x-4) using the FOIL rule or the box method or the distribution rule

(x-8)(x-4) = x(x-4)-8(x-4)

(x-8)(x-4) = x*x+x*(-4)-8*x-8*(-4)

(x-8)(x-4) = x^2-4x-8x+32

(x-8)(x-4) = x^2-12x+32

So (x-8)(x-4) turns into x^2-12x+32

x^2-12x+32 is the same as 1x^2+(-12x)+32 which is in the form ax^2+bx+c. We see that a = 1, b = -12, c = 32

-----------------

Use the values of a & b to find the value of h, which is the x coordinate of the vertex

h = -b/(2*a)

h = -(-12)/(2*1)

h = 12/2

h = 6

Then this is plugged back into the original function to find the y coordinate of the vertex. We can use either (x-8)(x-4) or x^2-12x+32 since they are equivalent expressions

k = y coordinate of vertex

k = f(h) = f(6) since h = 6

f(x) = (x-8)(x-4)

f(6) = (6-8)(6-4)

f(6) = (-2)(2)

f(6) = -4

note that

f(x) = x^2-12x+32

f(6) = (6)^2-12(6)+32

f(6) = 36-72+32

f(6) = -36+32

f(6) = -4

So we get the same result using either expression

So k = f(h) = f(6) = -4

Since h = 6 and k = -4, the vertex is (h,k) = (6,-4). So that's why the answer is choice B.

8 0
3 years ago
P = (20 + 0.5x) + 0.15(20 + 0.5x) Jennifer wants to purchase a book but only has $62.10 to spend. What is the maximum number of
vladimir2022 [97]
P=1.15(20+0.5x)=23+0.575x
62.1=23+0.575x
0.575x=39.1
x=68

68 pages. 
6 0
3 years ago
Please help me with this
alexandr1967 [171]
Photo has the answer

8 0
3 years ago
Richard R skemp states "mathematics is not a collection of facts which can be demonstrated and verified in the physical world ,
Tresset [83]

Answer:

Follows are the solution to this question:

Step-by-step explanation:

The principal characteristics of algebra, a significant degree of complexity, and the logical scientific evidence or universality of application could be considered as an argument. It often operates in maths without any equivalent concepts and methods throughout the real world. In some cases, computational processes and approaches are applied in different fields without a great understanding of the essence of the process. Another argument is the use of formal logic as well as the accuracy of evidence extracting.

7 0
3 years ago
​When CP = Rs 1250 and SP = Rs 1500, find profit or loss percent ?
Alex Ar [27]

Answer:

profit=20%

Step-by-step explanation:

profit%=sp-cp/cp×100%

=1500-1250/1250×100

=250/1250×100

=20%

6 0
3 years ago
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