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Jobisdone [24]
3 years ago
14

Plz solve this question mhanifa

Mathematics
1 answer:
cluponka [151]3 years ago
5 0

Answer:

  • Option B

Step-by-step explanation:

<u>Given:</u>

  • 4 - 3i

<u>Conjugate of the given number is:</u>

  • 4 + 3i

<u>Divide the given number by its conjugate:</u>

  • (4 - 3i) / (4 + 3i) =
  • (4 - 3i)(4 - 3i) / (4 + 3i)(4 - 3i) =
  • (16 + 9i² - 24i) / (16 - 9i²) =
  • (16 - 9 - 24i) / (16 + 9) =
  • (7 - 24i) / 25 =
  • 7/25 - 24i/25

Correct choice is B

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If my heart beats 2790 times every three quarters of an hour, what is your heart rate per minute?
kodGreya [7K]

Your heart rate is the number of times each minute that your heart beats, which is normally between 60 and 100 times per minute for adults. Your pulse is a way you can feel each time your heart beats. Measuring your heart rate helps you monitor your own health and know if you’re exercising at the right level to get the most benefits to your health.

Your pulse is your heart rate, or the number of times your heart beats in one minute. Pulse rates vary from person to person. Your pulse is lower when you are at rest and increases when you exercise (more oxygen-rich blood is needed by the body when you exercise). Knowing how to take your pulse can help you evaluate your exercise program.

5 0
2 years ago
Read 2 more answers
What is the solution to the equation -3d/a^2-2d-8 + 3/d-4 = -2/ d+2
Alex73 [517]

Answer:

d=1

Step-by-step explanation:

\frac{-3d}{d^2-2d-8} +\frac{3}{d-4} =\frac{-2}{d+2}

Lets factor the denominator d^2 -2d-8

d^2 - 2d - 8 = (d-4)(d+2)

\frac{-3d}{(d-4)(d+2)} +\frac{3}{d-4} =\frac{-2}{d+2}

Now make the denominators same

LCD: (d-4)(d+2)

\frac{-3d}{(d-4)(d+2)} +\frac{3(d+2)}{(d-4)(d+2)} =\frac{-2(d-4)}{(d+2)(d-4)}

Denominators are same on both sides

So equate the numerators

-3d +3(d+2) = -2(d-4)

-3d +3d +6 = -2d +8

6 = -2d + 8

subtract 8 on both sides

-2 = -2d

So d=1




3 0
3 years ago
Read 2 more answers
Factor out a negative 1 from each expression. - 4 - (5 + 3)​
ddd [48]

Answer:

-12

Step-by-step explanation:

-4-(5+3)

-4-(8)

-4-8

-12

6 0
3 years ago
Write an expression for the product of 6 and Q
astra-53 [7]

Answer: 6*Q= 6Q or 6*Q= y


Step-by-step explanation:

The product is the answer to a multiplication problem, therefore 6*Q will be the first part.

The second part will be the answer. Normally, this would be represented just by 6Q, but you can use another letter to represent it. We'll use y for an example.

6*Q= 6Q

or

6*Q= y

6 0
3 years ago
Read 2 more answers
Kelsey has 42 in her checking account and -65 in her savings account how much money does she have altogether
Lynna [10]

Uh.... She would have no money.

42 + (-65) = ?

= -23

Did you write the problem wrong?

4 0
4 years ago
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