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Maru [420]
3 years ago
13

Simplify this imaginary number sqr -45?

Mathematics
1 answer:
nydimaria [60]3 years ago
6 0
√-45 = √45(-1) = √45 * √-1 = 5√9 * √-1 = 15i
Remember, i = √-1
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Can somebody help me please???
Artemon [7]

Answer:

B

Step-by-step explanation:

2x + 4y = 6x - y

4y + y = 6x - 2x

5y = 4x

(4,5) when x=4, y=5

5(5) = 4(4)

25 = 16

is a false statement, so not (4,5)

(5,4) when x=5, y=4

5(4) = 4(5)

20 = 20

is a true statement, so yes

7 0
3 years ago
Henry constructed circle A with a radius of 4 units. He then created a sector
salantis [7]

Answer:

C

Step-by-step explanation:

area of circle is found by \pir^{2}

r=4 so 4*4=16

so A=16\pi

we are finding area of shaded part so 45/360(16\pi)

4 0
3 years ago
4. A plumber charges $25 for a service call plus $50 per hour of service. Write an equation in slope-intercept form for the cost
Pani-rosa [81]

Answer:

The total cost for 8 hours of work is $425.

The total cost for 10 hours of work is $525.

The total amount the plumber earns is made up of a fixed charge and a variable charge. A fixed charge is a charge that remains constant regardless of the number of hours the plumber works. The fixed charge is $25. The variable charge is the charge that increases per hours worked. The variable charge is $50 per hour.

Cost = fixed charge + variable charge

C = $25 + $50h

The total cost for 8 hours

$25 + $50(8)

$25 + $400

= $425.

The total cost for 10 hours

$25 + $50(10)

$25 + $500

$525.

Step-by-step explanation:

hope this helps

8 0
2 years ago
Pls help!!!!! Thx and fast sry for rushing!!
Oxana [17]

the answer is 399 just go to socratic if you need help with math.

4 0
3 years ago
Read 2 more answers
The Mariana Trench is 11 km below sea level. The Japan Trench is 9 km below sea level. What is the difference of depths between
kipiarov [429]

The difference of depths between them, and which trench is deeper is (a) 2 km, and the Mariana Trench is deeper

What is the difference of depths between them, and which trench is deeper?

The given parameters are:

Mariana Trench = 11 km

Japan Trench = 9 km

The Mariana Trench is deeper because 11 is greater than 9

The difference between the depth is

Difference = 11 km - 9 km

Difference = 2 km

Hence, the difference of depths between them, and which trench is deeper is (a) 2 km, and the Mariana Trench is deeper

3 0
2 years ago
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