Which subtraction expression

Mathematics

2 answers:

dolphi86 [110]3 years ago

6 0

Answer:

(3 + 5i) – (2 + i)

Step-by-step explanation:

Bond [772]3 years ago

5 0

If you would like to know which subtraction expression has the difference 1 + 4i, you can calculate this using the following steps:

a. (–2 + 6i) – (1 – 2i) = –2 + 6i – 1 + 2i = –3 + 8i

b. (–2 + 6i) – (–1 – 2i) = <span>–2 + 6i + 1 + 2i = </span>–1 + 8i

c. (3 + 5i) – (2 – i) = 3 + 5i – 2 + i = 1 + 6i

d. (3 + 5i) – (2 + i) = 3 + 5i – 2 – i = 1 + 4i

The correct result would be <span>d. (3 + 5i) – (2 + i).</span>

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damaskus [11]

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Step-by-step explanation:

I would say D or C but d is the identity property. And C is the distributive property.

For further explanation go to -

https://www.khanacademy.org/math/pre-algebra/pre-algebra-arith-prop/pre-algebra-ditributive-property/a/distributive-property-explained

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Andreas93 [3]

The square will be equal to the diameter of the circle. The circumference of a circle is π times the diameter, and the perimeter of the square is four times times that diameter...

C=πd

d=C/π

p=4d so

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Orlov [11]

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A boy spent 20% of his money on books and 20% of the remainder on food.If he had $2000 left, how much money did he have at first

DENIUS [597]

Answer:

$\$3,125$

Step-by-step explanation:

Let $s$ represent the amount of money he initially started with.

After he spent 20% on books, he will have $100\%-20\%=80\%$ of his initial money left. We can represent this as $0.8s$ .

Following that, the boy spends 20% of the remainder of his money on food. Similarly, he will have $100\%-20\%=80\%$ of the remainder of money he had left after he purchased the books. Therefore, he ends up with $0.8(0.8s)=0.64s$ of his money left.