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levacccp [35]
3 years ago
11

Question number 3 pls

Mathematics
1 answer:
marissa [1.9K]3 years ago
4 0
Factoring f(x) would give a factor (x-1-2i), so you can divide f(x) by this, leaving (x-3)(x+4)(x-1+2i), so the other roots are:

x=3
x=-4
x=1-2i

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The circumference of a circle is 30 pi. what is the radius of the circle
NARA [144]
Formula to find circumference is ;
2\pi \: radius
Since the given circumference is 30 pi then,

30 pi = 2 pi radius.
30 = 2 radius
radius = 30/2
radius = 15

The radius is 15 for a circle tha has circumference of 30 pi
8 0
3 years ago
You invest $850 into a stock market fund, which grows at a rate of approximately 4% each year. Write an equation that can be use
SCORPION-xisa [38]

We have been given that you invest $850 into a stock market fund, which grows at a rate of approximately 4% each year. We are asked to write an equation that can be used to calculate the amount of money in the fund after x years.

We will use exponential growth formula to solve our given problem.

An exponential function is in form y=a\cdot (1+r)^x, where,

y = Final amount,

a = Initial amount,

r = Growth rate in decimal form,

x = Time.

Let us convert 4% into decimal.

4\%=\frac{4}{100}=0.04.

We have a=840 and r=0.04, so our equation would be:

y=850\cdot (1+0.04)^x

y=850\cdot (1.04)^x

Therefore, the equation y=850\cdot (1.04)^x can be used to calculate the amount of money in the fund after x years.

8 0
3 years ago
If area of circle is 210cm ,find the value of radius
Nataly_w [17]

Answer:

8.18

Step-by-step explanation:

<u>r = square root of A/ pi </u>

R = square root 210/ 3.14

I hope the <u><em>formula</em></u> helped!

3 0
2 years ago
A survey of 100 doctors revealed that 2 put of every 5 doctors recommended Brand M deodorant. Based on the results, how many doc
CaHeK987 [17]

Answer:

B. 60

Step-by-step explanation:

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2 years ago
Based on the attendance at past picnics, Luis expects 95% of the students in his class to attend this years picnic. If 120 stude
Sever21 [200]

Answer:

95 / 100 * 120 = 114 students

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3 years ago
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