3 years ago

(3 + 2i) - (5 -7i) Write answer in standard form a +bi

Mathematics

1 answer:

Bess [88]3 years ago

4 0

(3 + 2i) - (5 - 7i)

Distribute the - sign

3 + 2i - 5 + 7i

Combine like terms

-2 + 9i

You might be interested in

Can someone can help me plssssssss

mario62 [17]

Answer:

Rectangle

Step-by-step explanation:

Because the floor is made of floor

5 0

2 years ago

2.Solve the following quadratic equations<br> i. 9x^2 - 1/16<br> ii. 2h^2 - 3h - 27

Juli2301 [7.4K]

$i)~9x^2-\dfrac{1}{16}=0\iff9x^2=\dfrac{1}{16}\iff x^2=\dfrac{1}{9\cdot16}\iff \\\\x^2=\dfrac{1}{144}\iff x=\pm\sqrt{\dfrac{1}{144}}=\pm\dfrac{1}{12}\Longrightarrow\boxed{x=\pm\dfrac{1}{12}}$

$ii)~2h^2-3h-27=0\\\\\Delta=b^2-4ac\to \Delta=(-3)^2-4\cdot2\cdot(-27)\to\Delta=9+216=225\\\\
\Longrightarrow h=\dfrac{-b\pm\sqrt{\Delta}}{2a}=\dfrac{-(-3)\pm\sqrt{225}}{2\cdot2}=\dfrac{3\pm15}{4}\\\\\begin{cases}h_1=\dfrac{3+15}{4}=\dfrac{18}{4}\iff \boxed{h_1=\dfrac{9}{2}}\\h_2=\dfrac{3-15}{4}=\dfrac{-12}{4}\iff\boxed{h_2=-3}\end{cases}$

4 0

2 years ago

The distance between the Town Hall and the Post Office is 4 km, and the distance between

Sophie [7]

Answer:

1cm: 1 km

Step-by-step explanation:

The scale of the map is simply 1:1

5 0

3 years ago

Can 3/8 be simplified eney more

AnnZ [28]

No, 3/8 is as simplified as it gets. This is because 3 and 8 have no common factors other than 1.

7 0

2 years ago

A car travels 45 feet in 1 second. At this rate, how many miles will it travel in 1 hour?

FromTheMoon [43]

Answer:

256 i did it before

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers