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3 years ago

Answer and explain it please

Mathematics

1 answer:

satela [25.4K]3 years ago

4 0

Answer:

363 inches squared

Step-by-step explanation:

Area = $\pi*11^2$ . $\pi$ is 3 so it's just 11 squared times 3. Which is 121 times 3. That equals 363.

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Complete a piecewise function that describes the graph.

trapecia [35]

Answer:

$y=\left \{ \begin{array}{l}-x^2-4x-1,\ x$

Step-by-step explanation:

Left part of the graph is the graph of the parabola passing through the points (-2,3), (-3,2) and (-4,-1). If the equation of the parabola is $y=ax^2+bx+c,$ then

$3=a\cdot (-2)^2+b\cdot (-2)+c\Rightarrow 3=4a-2b+c\\ \\2=a\cdot (-3)^2+b\cdot (-3)+c\Rightarrow 2=9a-3b+c\\ \\-1=a\cdot (-4)^2+b\cdot (-4)+c\Rightarrow -1=16a-4b+c$

Subtract first two equations and last two equations:

$-1=5a-b\\ \\-3=7a-b$

Suybtract these two equations:

$-2=2a\Rightarrow a=-1$

So $-1=5\cdot (-1)-b\Rightarrow b=-5+1=-4$

Substitute into the first equation:

$3=4\cdot (-1)-2\cdot (-4)+c\Rightarrow c=3+4-8=-1$

The equation of the parabola is $y=-x^2-4x-1$

The right part of the graph is translated 1 unit to the right and 1 unit down graph of the function $y=\dfrac{1}{2}|x|$ , so it has the equation $y=\dfrac{1}{2}|x-1|-1$

Hence, the piece-wise function is

$y=\left \{ \begin{array}{l}-x^2-4x-1,\ x$

6 0

3 years ago

How do i find the value of x?

inn [45]

Answer:h

2x+1+3x+8./2=. 17

5x+9. = 17 x2

5x+9= 34

-9. -9

5x=25

Divide by 5

X=5

Step-by-step explanation:

4 0

4 years ago

Which of the following expressions is equivalent to the one shown below?

Damm [24]

Answer:

The choose D. 4¹⁵

I hope I helped you^_^

6 0

3 years ago

The temperature is 60°F. The temperature will decrease by 3°F each hour. Let

ohaa [14]

Answer:

approximately 9 hours

Step-by-step explanation:

Just take three out of 60 untill you reach the closest thing to 32

6 0

3 years ago

PLEASE HELP!!!!!!

Grace [21]

Answer:

x = 8/3 and y = 32/3

Step-by-step explanation:

Add the two equations, getting -3y = -32, thus y = 32/3

Sub for y in first equation, getting 5x + 32/3 = 24

5x = 40/3

x = 8/3

5 0

3 years ago

Read 2 more answers