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ololo11 [35]
3 years ago
14

Graph the inequality on the axes below.

Mathematics
1 answer:
Margaret [11]3 years ago
5 0

The first step is to graph the line 2x + y = -8. To do this, we can graph the x and y-intercepts. Letting x = 0, we get y = -8, so the y-intercept is -8. Letting y = 0, we get 2x = -8, so x = -4.

Graph the line between the points (-4, 0) and (0, -8). The line should be <em>dotted</em>, because this is a strict inequality (the points on the line are not part of the solution).

The next step is to substitute a point - I like to use (0,0): when x and y are equal to zero, we have 2(0)+0>-8, which is true. Therefore, the right side of the graph (which contains the point (0,0)) should be shaded. Note: If the inequality was not true, you would want to shade the opposite side of the graph.

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<span>How does the volume of an oblique cylinder change if the radius is reduced to 2/9 of its original size & the height is quadrupled?

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radius is reduced to 2/9 of its original size = r * 2/9 = (2r/9)
height is quadrupled = h * 4 = 4h

Volume of an oblique cylinder = π * (2r/9)² * 4h

Assume: r  = 9 ; h = 10

V = π * 9² * 10 = 3.14 * 81 * 10 = 2,543.40

V = π * (2²) * (10*4) = 3.14 * 4 * 40 = 502.4

The new volume decrease and is almost equivalent to 20% of the original volume. 

8 0
3 years ago
I am graphing something with 29 points. I know that you have to label the points with a capital letter. However, there are only
allochka39001 [22]

Answer:

a₁, a₂, a₃, . . .

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When we name something in Mathematics it is always advisable to number them as $ a_1, a_2, a_3, ...$.

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The simple logic behind the notion of $ a_1, a_2, a_3, ... $ is that the numbers have no end and we can number as many variables we want using this logic.

In this problem, you can continue your notation from $ a_{27}, a_{28}, a_{29} $ so that you don't have to make a change in your figure.

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3 years ago
9. A waffle iron can make a waffle in 4 minutes. How many waffles can be made in an hour?​
Sati [7]

Answer:

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Step-by-step explanation:

8 0
3 years ago
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sergejj [24]

Answer:

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Using the general equation f(x)=a\cos(bx+c)+d, we already know that a=4 and d=3, but we need to find b from the period:

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2 years ago
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BlackZzzverrR [31]

Answer: 2.12 seconds

Step-by-step explanation:

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To calculate the extra amount of time it took Josie to complete the lap, we subtract Erica's time from Josie's time. This will be:

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