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Andrei [34K]
2 years ago
6

5. Simplify the expression, (-2 - 5i) - (-4+6i) 2 - 11i -2+i -6 + 11i -5i

Mathematics
1 answer:
monitta2 years ago
7 0

\qquad\qquad\huge\underline{{\sf Answer}}♨

Let's simplify ~

\qquad \sf  \dashrightarrow \:( - 2 - 5i) - ( - 4 + 6i)

\qquad \sf  \dashrightarrow \: - 2 - 5i +  4  -  6i)

\qquad \sf  \dashrightarrow \: - 2 +  4   - 5i-  6i)

\qquad \sf  \dashrightarrow \:2 - 11i

Therefore, A is the Correct choice !

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The train from Metropolis A to Metropolis B takes 4 hours and 15 minutes. If the rail distance between Metropolis A and Metropol
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The surface area of the three-dimensional figure is square centimeters?
Zina [86]

Answer:

Step-by-step explanation:

Alright, lets get started.

The surface area of the figure given is : The area of all shapes together

The figure has 2 similar triangles and 3 similar rectangles.

The area of 1 triangle =

\frac{1}{2}*base*height

The area of 1 triangle = \frac{1}{2}*10*8.66=43.3

So, the area of both triangles = 43.3*2=86.6

The area of 1 rectangle = width *length

The of 1 rectangle = 10*15=150

So, the area of all 3 rectangles = 3*150=450

So, total area of figure = 86.6+450=536.6

hence the surface area is 536.6 square centimeters : Answer

Hope it will help :)

3 0
3 years ago
A small school had 60% boys and the rest are girls if the number of boys is 48 what is the total number of boys and girls all to
Flura [38]

Hey there!

When dealing with percent word problems, the word "is" means equals. Let's see what we can do with your problem.

If the small school had 60% boys, it will have 40% girls. The number of boys <em>is</em> 48, which should equal 60% of the total, which we can model below, with t representing the total number of kids. In decimal form, 60% is 0.6.

0.6t=48

We divide both sides by 0.6.

t=80

Therefore, there are 80 total kids at the school.

We can also check our answer below.

BOYS: 0.6(80)= 48

GIRLS: 0.4(80)=32

48+32=80

I hope that this helps!

5 0
3 years ago
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