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ZanzabumX [31]
2 years ago
13

Nina sells 95% of her cookies at a bake sale. She baked 120 cookies. How many did she sell?

Mathematics
1 answer:
adoni [48]2 years ago
7 0

Answer:

114 cookies

Step-by-step explanation:

120×0.95=114

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The coordinate plane below represents a city. Points A through F are schools in the city.
Usimov [2.4K]
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(x - h)² = +/-4a(y-k)      or    (y - k)² = +/-4a(x - h)

For parabolas drawn like that in the picture, the general form is (x - h)² = +4a(y-k), where the vertex is (h,k) and a is the distance from the vertex to the focus. From the picture, the vertex is at (0,3). Then, we use point D(-2,4) to determine a:

(-2 - 0)² = +4a(4 - 3)
4a = 4

So, the equation of the parabola is:

x² = 4(y - 3)
x² = 4y - 12

Part B. Point D was already verified above. Now for point E(2,4)
x² = 4y - 12
2² ? 4(4) - 12
4 ? 4
4 = 4

Part C. For y < 7x − 4, ignore the equality symbol first and graph the line. Assign random values of x, then you get corresponding values of y. Plot them as shown in the second picture. The line is shown in red. Next, test the equation by choosing a random point. Let's choose the purple point at (4,3).

3 ? 7(4) − 4
3 ? 24
3 < 24

Thus, it applies to the purple point, and all the other areas to that area. The shaded region are all solutions of the inequality. So, Erica is only interested in points E, C and F. 

5 0
3 years ago
How much money is 1/2 of $11.00<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B2%7D%20" id="TexFormula1" title=" \frac
never [62]

$5.5

Step-by-step explanation:

½ × 11.00

5.5

Hope this helps. Have a good day!

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Answer:

You can

Step-by-step explanation:

To see if multiple ratios are proportional, you could write them as fractions, reduce them, and compare them.

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2 years ago
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What is an equation of the line that passes
sasho [114]
2x-2y

parallel means that the x part is the same

and it is -2y because the y-coordinate is -2
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1 year ago
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Answer:

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Step-by-step explanation:

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