3 years ago

What is the sum of 15 – 6i and –2 + 9i?

Mathematics

2 answers:

Ainat [17]3 years ago

7 0

Answer:

13 + 3i

Step-by-step explanation:

I just used a app for this problem.

IrinaVladis [17]3 years ago

6 0

Answer:

$13 + 3i$ is the sum of the numbers

Step-by-step explanation:

$13 + 3i$

$15 - 6i - 2 + 9i$ → Sum

collect like terms

$(15 - 2) + ( - 6i + 9i) =13 + 3i$

You might be interested in

A. Change the following fractions to mixed numbers.

qaws [65]

Answer:

A )

1 - $1\frac{4}{7}$

2 - $5\frac{3}{5}$

3 - $3\frac{1}{5}$

4 - $4\frac{1}{4}$

5 - $6\frac{3}{4}$

B )

1 - $\frac{1}{4}$

2 - $\frac{2}{3}$

3 - $\frac{1}{3}$

4 - $\frac{4}{25}$

5 - $\frac{5}{8}$

C )

1 - 1

2 - $\frac{3}{4}$

3 - 1

4 - $\frac{3}{4}$

5 - $\frac{7}{9}$

D )

1 - $\frac{5}{12}$

2 - $\frac{2}{3}$

3 - $\frac{1}{3}$

4 - $\frac{1}{2}$

5 - $\frac{5}{12}$

6 0

3 years ago

the labelled price of a bag is Rs1,580. If 5% discount is allowed, calculate the selling price of the watch.solve it

Ipatiy [6.2K]

Step-by-step explanation:

If there 5% is allowed in Rs 1,580 than the selling price of the watch is 1,501

7 0

3 years ago

How do I factor this problem

Keith_Richards [23]

Answer:

−(3x−2)(7x+4)

Step-by-step explanation:

4 0

3 years ago

The population of a local species of dragonfly can be found using an infinite geometric series where a1 = 30 and the common rati

Alchen [17]

The sum will be:

sigma(i = 1 to infinity, 30*(2/5)^i)

-> $\lim_{i \to \infty} \frac{30(1- \frac{2}{5}^{i} )}{ \frac{3}{5} }$

Which is equal to 30/(3/5) = 50

3 0

3 years ago

Read 2 more answers

What is the area of the green triangle?<br> A) 23 cm2 <br> B) 30 cm2 <br> C) 46 cm2 <br> D) 65 cm2

shusha [124]

You have to calculate the air, a=h*b/2 so the answer is d)

5 0

3 years ago

Read 2 more answers