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2 years ago

What is the conjugate and modulus of 2 – 6i?

Mathematics

2 answers:

Serjik [45]2 years ago

5 0

Answer:

2 + 6i

Step-by-step explanation:

It’s the same numbers with an opposite sign

docker41 [41]2 years ago

4 0

Answer:

Conjugate: 2 + 6i

Modulus: 0

Step-by-step explanation:

Conjugate: 2 + 6i

Modulus: 0

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Find the value of c that completes the square for x2−15x+c

meriva

Answer:

The value of c is $\frac{225}{4}$ .

Step-by-step explanation:

The perfect square of the difference between two numbers is:

$(x-y)^{2}=x^{2}-2xy+y^{2}$

The expression provided is:

$x^{2}-15x+c$

The expression is a perfect square of the difference between two numbers.

One of the number is x and the other is √c.

Use the above relation to compute the value of c as follows:

$x^{2}-15x+c=(x-\sqrt{c})^{2}\\\\x^{2}-15x+c=x^{2}-2\cdot x\cdot\sqrt{c}+c\\\\15x=2\cdot x\cdot\sqrt{c}\\\\15=2\cdot\sqrt{c}\\\\\sqrt{c}=\frac{15}{2}\\\\c=[\frac{15}{2}]^{2}\\\\c=\frac{225}{4}$

Thus, the value of c is $\frac{225}{4}$ .

5 0

3 years ago

Workers Inc. just bought 14 boxes of pens to put in their storage room for employees to use as needed. Each box contains 45 pens

Igoryamba

14x45=630
43×2=86
(14×45)-(43×2)= 630-86=544
there would be 544 pens left

3 0

2 years ago

7. Solve each equation.

Firlakuza [10]

Answer:

answer is in the picture

4 0

2 years ago

On a Saturday, Saul can cut 4 lawns in 6 hours. If Mitch can mow lawns at the same rate, how long will it take him to mow 9 lawn

Charra [1.4K]

Mowing 4 lawns in 6 hours gives a mowing rate of 6/4 = 1.5 hours per lawn.
To mow 9 lawns, you need 1.5*9 = 13.5 hours.

The answer is B.

6 0

3 years ago

Read 2 more answers

What is 11 divided by 12 in fraction form?

Aleksandr-060686 [28]

11÷12 can be written as eleventh twelves

7 0

3 years ago