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Brums [2.3K]
3 years ago
8

Cynthia invests

Mathematics
1 answer:
evablogger [386]3 years ago
6 0

Answer:

400

Step-by-step explanation:

The answer is 400. You get 5 percent of 800 and then multiply and divide to get the answer of the question

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Help! Idk how to sum these
Damm [24]
It is 28, did the math
3 0
4 years ago
Write a sine function that has a midline of 5, an amplitude of 4 and a period of 7/5
rusak2 [61]

Answer:

y=4sin(\frac{10\pi}{7}x)+5

Step-by-step explanation:

<u>Recall formula</u>

y=asin(bx+c)+d\\\\y=4sin(bx)+5

<u>Determine b from period</u>

\frac{2\pi}{b}=\frac{7}{5}\\ \\ 10\pi=7b\\\\b=\frac{10\pi}{7}

<u>Final Equation</u>

y=4sin(\frac{10\pi}{7}x)+5

3 0
2 years ago
C = d where C is the circumference of a circle, is about 3.14, and d is the diameter.
Rzqust [24]

Answer:

Formula for Circumference of a Circle

Circumference is given by the formula C = πd where π = 3.14 and d is the diameter of the circle. Circumference is given by the formula C = 2πr where π = 3.14 and r is the radius of the circle.

Hope it's helpful to you

3 0
4 years ago
6 is 75% of what number
Sergeu [11.5K]
6/.75=8
6 is 75% of 8
3 0
3 years ago
 Write a function with a zero of 1/2 . Explain how you know.
nalin [4]

Answer:

Simplest function is f(x) = 2x - 1

Step-by-step explanation:

When a function has a zero, simply put, that point is where the graph goes through the x-axis.  At this point, the y value is 0.

If a function has a 0 of 1/2, that translates to x = 1/2 and also (1/2, 0).  That means that y = 0 when x = 1/2.

If x = 1/2 and is a zero, then x - 1/2 = 0 and 2x - 1 = 0 (notice that y = 0 here and solving for x would get you right back to x = 1/2).

The simplest function with a zero of 1/2 is

f(x) = 2x - 1

You know it is true that the zero is 1/2 for two reasons.  First one is to set the right side equal to 0 and solve for x.

The second one is to graph the line y = 2x - 1 and see that it goes through the x axis at 1/2 where y = 0.

6 0
4 years ago
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