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4 years ago

13

Graphing Quadratic function

1 answer:

AnnyKZ [126]4 years ago

7 0

I use a website called desmos.com when I need to graph a function. Heres a picture of what it should look like.

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-2x+3 is greater than or equal to -(x-7)

Cloud [144]

Answer:

less than

Step-by-step explanation:

4 0

4 years ago

Read 2 more answers

The perimeter of the rectangle is 80 cm. The area of the rectangle is acm2 . (i) show that x 2 40x + a = 0.

erica [24]

Answer:

Proved

Step-by-step explanation:

Given

$p = 80$ ---- perimeter

$a \to area$

Required

$x^2 + 40x + a = 0$

The perimeter is calculated as:

$p = 2(x + y)$

Where

$x,y \to$ the rectangle dimension

So, we have:

$2(x + y) = 80$

Divide by 2

$x + y = 40$

Make y the subject

$y = 40 - x$

The area of the rectangle is:

$a = xy$

$a = x * (40 -x)$

$a = 40x -x^2$

Equate to 0:

$x^2 - 40x + a = 0$

4 0

3 years ago

Find the value of b/2a+b, when a=5 and b=-2

Murrr4er [49]

Answer:

$-\frac{1}{4}$ or -0.25

Step-by-step explanation:

$\frac{b}{2a+b}$

Plug in a=5 and b=-2

$\frac{-2}{2(5)+(-2)}$ =

$\frac{-2}{10-2}$ =

$\frac{-2}{8}$ =

$-\frac{1}{4}$ or -0.25

Have a nice day! :)

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3 years ago

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Joel and sharply are selling flowers bulbs for a school fundraiser. Customers can buy bags of wildflowers bulbs and bags of daff

ElenaW [278]

The answer is 7 dollars

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4 years ago

A + 6.6 = 12.6 helpp please !

marysya [2.9K]

$a + 6.6 = 12.6 \\ a = 12.6 - 6.6 \\ a = 6.0$

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2 years ago