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Fudgin [204]
4 years ago
7

Please help guys...

Mathematics
2 answers:
jok3333 [9.3K]4 years ago
3 0

Answer:5i

Step-by-step explanation:

√(-25)=√(-1)×√(25) √(-1)=I √(25)=5

Therefore √(-1)×√(25)=i×5=5i

mezya [45]4 years ago
3 0

Answer:

5i and -5i.

Step-by-step explanation:

i^2 = -1.

5i * 5i

= 25 * i^2

= 25 * -1

= -25.

-5i * -5i

= 25 * i^2

= 25 * -1

= -25.

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Find the arc length and area of a sector with radius R =60 inches and central angle equals 30° round your answer to the nearest
Black_prince [1.1K]

Answer:

(a)31.42 inches

(b)942.48 Square Inches

Step-by-step explanation:

Given a sector of a circle with the following dimensions:

Radius of the circle =60 inches

Central Angle of the sector =30°

(a)Arc Length

Arc Length =\dfrac{\theta}{360^\circ}X2\pi r

=\dfrac{30}{360^\circ}X2*60*\pi\\\\=10\pi\\\\=31.42$ Inches (correct to the nearest hundredth)

(b)Area of the sector

Area of the sector =\dfrac{\theta}{360^\circ}X\pi r^2

=\dfrac{30}{360^\circ}X\pi*60^2\\\\=300\pi\\\\=942.48$ Square Inches (correct to the nearest hundredth)

3 0
4 years ago
Read 2 more answers
What is the Composite Surface Area?​ Need help asap is due today.
jok3333 [9.3K]
I’m really not sure but 216 because bass multiplied by height multiplied by width (6*6*6)
4 0
3 years ago
Variable expression for 3x+7
evablogger [386]

Answer:

y=3x+7

Step-by-step explanation:

Where y is the dependent variable and x is the independent variable. When we change x , Y also changes.

3 0
3 years ago
Um someone help? But with real answers please​
levacccp [35]

Answer:

answer is

Step-by-step explanation:

The number of students in order from least to greatest is 14<24<27<54

Step-by-step explanation:

Total students = 150

16% students play soccer

No. of students play soccer = 

9/25 play basketball

No. of students play basketball = 

 play football

No. of students play football = 

No. of students do not play anything = 14

The number of students in order from least to greatest is 14<24<27<54

6 0
3 years ago
The average number of customers per day at a home improvement store is given in the following table. Let x represent the day whe
nika2105 [10]

Answer:

A. 33.690\sin (0.887x + 1.337) + 81.684.

Step-by-step explanation:

We are given that,

x = Number of days where 1 = Sun of 1st week and 7 = Sat of first week.

The corresponding table for the data is given by,

Days        Day Number               Number of Customers

Sun                    1                                     115

Mon                   2                                     77

Tue                    3                                     60

Wed                   4                                     51

Thur                   5                                     68

Fri                      6                                      86

Sat                     7                                      120

The general form of the regression model is a\sin (bx+c)+d.

Using the sinusoidal regression calculator, we get that,

a = 33.690

b = 0.887

c = 1.337

d = 81.684

That is, the sine regression model is 33.690\sin (0.887x + 1.337) + 81.684.

Thus, option A is the sine regression model for the given data.

6 0
3 years ago
Read 2 more answers
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