MATHEMATICS HIGH SCHOOL

Which subtraction expression has the difference 1 + 4i?

a. (–2 + 6i) – (1 – 2i)

b. (–2 + 6i) – (–1 – 2i)

c. (3 + 5i) – (2 – i)

d. (3 + 5i) – (2 + i)

Answers

Answer 1
Answer: 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) = –2 + 6i + 1 + 2i =  –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 d. (3 + 5i) – (2 + i).
Answer 2
Answer:

Answer:

(3 + 5i) – (2 + i)

Step-by-step explanation:

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Round 590,340 to the nearest ten thousand?

Answers

590340 rounded to the nearest ten thousand would give 590000
590 340   to the nearest ten thousand.

The ten thousand digit is 9.  

The digit after the 9 is 0 and 0 is not up to 5, so we round down the 0 and the digits before the 0 from the right are rounded down to 0 as well.

590 340 ≈ 590 000 to the nearest ten thousand

Please help math 25 points

Answers

The answer is c folk
The answer is C my mans

Which word phrase can you use to represent the algebraic expression 6y

Answers

C. The product of 6 and a number y.
6 times y.  one way to do these is read it out loud, and if that doesn't help than try explaining what the expression says, out loud. so you would read this as "six y", or you could explain it as 6y is saying you have y six times

A quantity h varies directly with w and inversely with p. If h = 2, w = 4, and p = 6. What is the constant of variation?A. 1/2
B. 4/3
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D. 12

Answers

Using a proportional relationship, the constant of variation is given as follows:

C. 3

What is a proportional relationship?

A proportional relationship is a function in which the output variable is given by the input variable multiplied by a constant of proportionality, that is:

y = kx

In which k is the constant of proportionality.

If the measures are inverse proportional, the relation is:

y = k/x

A quantity h varies directly with w and inversely with p, hence the quantity h is given by:

h = kw/p

h = 2, w = 4, and p = 6, hence we can solve for the constant k.

2 = 4k/6

4k = 12

k = 3.

Hence option C is correct.

More can be learned about proportional relationships at brainly.com/question/10424180

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Answer:c

Step-by-step explanation:

Took test on edg

In the first year of ownership, a new car can lose 20% of its value. If a car lost $4,200 of value in the first year how much did the car originally cost?

Answers

Original cost of the car is $21,000.

What is Percentage?

A relative value indicating hundredth part of any quantity is called percentage.

Given that;

A new car lose 20% of its value.

In first year, A car lost $4,200 of the value.

Now, Let original price of car = $x

Then, By the given condition;

20% of x = $4,200

Solve for x;

20/100 of x = 4,200

20/100 × x = 4,200

1/5 × x = 4,200

x = 5 × 4,200

x = 21,000

Thus, Original cost of the car is $21,000.

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Using the (is/of = %/100) 4,200 is 20% of x. 4200/x = 20/100. Cross multiply and divide and you should get $21,000

What are the solutions of the equation below
(x-2)(x+9)=0

Answers

Answer: {2, -9}

Step-by-step explanation: Think of these two binomials, x -2 and x + 9,

as two numbers that are multiplying together to equal zero.

In order for two numbers to multiply together to equal zero,

either one number or the other number must equal zero.

So for two binomials to multiply together to equal zero,

either one binomial or the other binomial must equal zero.

So we can split this problem up into two parts.

If (x - 2)(x + 9) = 0, then either x - 2 = 0 or x + 9 = 0.

On the left, add 2 to both sides and we have x = 2.

On the right, subtract 9 from both sides and we have x = -9.

For our final answer we use set notation.

So our answer is {2, -9}.

Answer:

2 and -9

Step-by-step explanation:

x-2=0

x=2

x+9=0

x=-9
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