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anastassius [24]
3 years ago
8

What is the value of the expression below when w = 8? w^2 - 4w - 2

Mathematics
1 answer:
alexdok [17]3 years ago
4 0

Answer:

25

Step-by-step explanation:

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The vertices of quadrilateral PQRS are listed.
Klio2033 [76]

Answer:

I think it's a rectangle. Any time you need to plot points on a graph go to desmos graph and plot them.

6 0
2 years ago
Find the volumes of the solids generated by revolving the triangle with vertices (2, 2)​, (2, 6)​, and (5, 6) about ​a) the​ x-a
Vesna [10]
  • About the x-axis (washer method):

\displaystyle\pi\int_2^5\left(6^2-\left(\frac43x-\frac23\right)^2\right)\,\mathrm dx=\frac{16\pi}9\int_2^5(20+x-x^2)\,\mathrm dx=\boxed{56\pi}

  • About the y-axis (shell method):

\displaystyle2\pi\int_2^5x\left(6-\left(\frac43x-\frac23\right)\right)\,\mathrm dx=\frac{8\pi}3\int_2^5x(5-x)\,\mathrm dx=\boxed{36\pi}

  • About x=7 (shell method):

\displaystyle2\pi\int_2^5(7-x)\left(6-\left(\frac43x-\frac23\right)\right)\,\mathrm dx=\frac{8\pi}3\int_2^5(35-12x+x^2)\,\mathrm dx=\boxed{48\pi}

  • About y=2 (washer method):

\displaystyle\pi\int_2^5\left((6-2)^2-\left(\frac43x-\frac23-2\right)^2\right)\,\mathrm dx=\frac{16\pi}9\int_2^5(5+4x-x^2)\,\mathrm dx=\boxed{32\pi}

7 0
3 years ago
Explain how to use proportional reasoning to find 35% of 600
Sauron [17]
\frac{35}{100} = \frac{x}{600}

This is the equation we would use for this problem.

Now when we cross multiply, we get:
 35(600)=100x

Simplify:
21000=100x

Divide each side by 100 to get x b itself:
210=x

So, as you can see, 210 is 35% of 600

8 0
3 years ago
On a True/False test, Amy answered the first three questions wrong but answered the rest of the questions correctly. On the same
borishaifa [10]

Answer:

89.29%

Step-by-step explanation:

Given that Scott answered exactly two questions wrong. He answered the last question wrong, the 26 questions before it correctly, and the question before that wrong.  Since Amy and Scott were both incorrect on the same question exactly once, Scott would have done wrong only in I or II or III question.  If I question was wrong by both, total questions = 28, if II wrong total questions =29 and for iii total questions =30

Greatest possible percent would occur if total questions are less

i.e. when total =28

Greatest percent = \frac{28-3}{28} =89.29%

3 0
3 years ago
Help I need to find x and I need to show work plz help and thanks
const2013 [10]
6x-9x-4=-2x-2
3x-4=-2x-2 
3x+2x=-2+4
5x= 2
x=2/5
3 0
3 years ago
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