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Elina [12.6K]
3 years ago
6

-3√-20 written as a complex number

Mathematics
1 answer:
galben [10]3 years ago
3 0

Answer: 3√-20 = 3√20√-1 = (3√20)i


Step-by-step explanation:

√-20 can be written √20√-1 since

(√20√-1)^2 is indeed -20.

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The data below are the ages and systolic blood pressures (measured in millimeters of mercury) of 9 randomly selected adults. Age
Ipatiy [6.2K]

Answer:

156

Step-by-step explanation:

Given the data:

Age (X) :

38

41

45

48

51

53

57

61

65

Pressure(Y) :

116

120

123

131

142

145

148

150

152

From the data, we could obtain a regression equation to mod the data Given using a linear regression calculator :

The regression equation obtained is :

y = 1.48769X + 60.46103

Using the model, the predicted blood pressure for a person aged 64 will be :

y = 1.48769(64) + 60.46103

y = 95.21216 + 60.46103

y = 155.67319

y = 156 (nearest whole number)

3 0
3 years ago
What is 5 x 5 x 5 x 5 in exponential notation?
kramer

Answer:

5^4

Step-by-step explanation:

because 5 is multiplied 4 times

3 0
2 years ago
How to solve this substitution​
Lena [83]
-5x+4y=11
substitute for x which is 5
(-5)(5)+4y=11

simplify :
4y-25=11

add 25 on both sides
4y-25=11
+25 +25
the 25 cancels out

so it would be 4y=36
and you divide both sides by 4

4/4 =36/4

which gives you (5,9)
x= 5 , y =9
6 0
3 years ago
How to find the shaded area
tresset_1 [31]

Answer:

Step-by-step explanation:

You have to multiply

3 0
3 years ago
What is the slope of the line that passes through the points (-2,12) and (0,3)
ycow [4]

Answer:

-9/2

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(3-12)/(0-(-2))

m=-9/(0+2)

m=-9/2

4 0
3 years ago
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