2 years ago

Multiply and simplify -12i x 3i

Mathematics

2 answers:

otez555 [7]2 years ago

8 0

-36i^2 because -12 X 3= -36 and i X i = i^2

Lubov Fominskaja [6]2 years ago

3 0

-12i×3i=-12×3×i×i
12×3=36 i×i=i²
So in the case of basic algebra, it's 36i²

If i is √-1 then i² is √-1×√-1 which is -1
36×-1=-36

You might be interested in

The first term of a geometric sequence is 32, and the 5th term of the sequence is 818 .

sammy [17]

Answer:

$32,24,18,\frac{27}{2} ,\frac{81}{8}$

Step-by-step explanation:

Let x, y , and z be the numbers.

Then the geometric sequence is $32,x,y,z,\frac{81}{8}$

Recall that term of a geometric sequence are generally in the form:

$a,ar,ar^2,ar^3,ar^4$

This implies that:

a=32 and $ar^4=\frac{81}{8}$

Substitute a=32 and solve for r.

$32r^3=\frac{81}{8}$

$r^4=\frac{81}{256}$

Take the fourth root to get:

$r=\sqrt[4]{\frac{81}{256} }$

$r=\frac{3}{4}$

Therefore $x=32*\frac{3}{4} =24$

$y=24*\frac{3}{4} =18$

$z=18*\frac{3}{4} =\frac{27}{2}$

8 0

2 years ago

Almonds cost $15.50 for 6 pounds. Find the unit rate. Round to the nearest cent if necessary.

Salsk061 [2.6K]

15.50 for 6 lbs......15.50/6 = $ 2.58 per lb

4 0

3 years ago

Which is larger than 8.15: 55/9 or 57/7 or 41/5 or 65/8

grin007 [14]

55/9 = 6.11
57/7 = 8.14
41/5 = 8.2
65/8 = 8.125

The answer is 41/5 is larger than 8.15

3 0

1 year ago

Read 2 more answers

2x-7/4 - 1-x/6=17<br> What is the answer?

GalinKa [24]

The answer is X=237V22

4 0

3 years ago

Read 2 more answers

I need help answering the question

diamong [38]

385=15n+85
385-85=15n
300=15n
300/15=n
20=n

8 0

3 years ago

Read 2 more answers