What is the sum of StartRoot negative 2 EndRoot and StartRoot negative 18 EndRoot?

Mathematics

2 answers:

Crank2 years ago

8 0

Answer:

<h2>B. 4 StartRoot 2 EndRoot i </h2>

Step-by-step explanation:

Given the surd function √-2 and √-18, we are to fund the sum of both values.

Taking the sum:

= √-2 + √-18

= (√2 * √-1)+ (√18 *√-1)

from complex numbers, √-1) = i

The expression becomes

= √2 i+ √18 i

= √2 i+ √9*2 i

= √2 i+ 3√2 i

= 4 √2 i

= √-2 + √-18 = 4 √2 i

The result is 4 StartRoot 2 EndRoot i

Nimfa-mama [501]2 years ago

3 0

Answer:

its b

Step-by-step explanation:

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Sanjay consulted three electricians about upgrading the wiring in his home. Each electrician uses a linear formula that incorpor

Reptile [31]

Answer:
b.Each electrician charges a different base fee:

Explanation:
Each of the equations has two parts:
1- base fee that is independent of any variable (this would be the number that has no variable next to it)
2- an hourly rate depending on the number of hours x (this would be the number that has an x next to it)

For the first electrician:
y = 25x + 30
base fee = $30
hourly rate = $25

For the second electrician:
y = 30x + 25
base fee = $25
hourly rate = $30

For the third electrician:
y = 25x + 20
base fee = $20
hourly rate = $25

Now, let's check the choices:
a.Each electrician charges a different hourly rate:
This is incorrect as electricians 1 and 3 charge the same hourly rate ($25)

b.Each electrician charges a different base fee:
This is correct as all three base fees are different ($30, $20 and $25)

c.All three electricians charge the same hourly rate:
This is incorrect as electrician 2 has a different hourly rate

d. All three electricians charge the same base fee:
This is incorrect as the base fees for the three electricians are different ($30, $25 and $20)

Hope this helps :)

4 0

2 years ago

Read 2 more answers

Select the two figures that are similar to the 9 by 6 figure that’s is shown.

Eduardwww [97]

Answer:

The correct option is 3. The green figure is similar to the 9 by 6 figure.

Step-by-step explanation:

Let a small square represents 1 unit.

From the given figure it is noticed that

1. The dimensions of red figure is 4 by 3.

2.The dimensions of brown figure is 4 by 6.