1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
just olya [345]
4 years ago
11

Helppppppppppppppppppppppppppppppppppp

Mathematics
1 answer:
12345 [234]4 years ago
3 0
Answer:
-16 + 37i

Explanation:
Note that i^2 = -1

(4+7i)(3+4i) = 4*3 + 4*4i + 7i*3 + 7i*4i
                    = 12 + 16i + 21i + 28i^2
                    = 12 + 37i + 28(-1)
                    = 12 + 37i - 28
                    = -16 + 37i

Hope this helps :)
                 
You might be interested in
How many integers between 1-100 are divisible by 3?
katrin [286]
You can state the qurstion in an other way
how many integers between 1-100 has 3 in their prime compostion or how many many numbers can be written as 3*a where a is any number
the multiplication table of 3 shows that 3*33=99
which means that highest product below 100 is 3*33
so there are 33 numbers that are divisible by three
7 0
3 years ago
Read 2 more answers
A car produces 53.9 tons of carbon dioxide over a 7 year period. Find its carbon footprint (tons of carbon dioxide per year).
Marina86 [1]

Answer:

carbon footprint

  7.7 tons

Step-by-step explanation:

Given that,

carbon dioxide produced by a car over 7 year period = 53.5 tons

To find,

carbon footprint <em>(tons of carbon dioxide per year)</em>

7 years ------> 53.5 tons

1 year   -------> 53.9/7 tons

= 7.7 tons

tons of carbon dioxide produced per year = 7.7

8 0
4 years ago
Use the ratio go solve the percent problem
Drupady [299]
Answer
40%
32 is what percent of 80? =40.
5 0
3 years ago
You rode a bicyde for 2 hours and travelled 43 km, calculate your average<br>speed.​
cupoosta [38]

Answer:

22.5km per hour

Step-by-step explanation:

5 0
3 years ago
The table shows the price of two cereal brands and the number of ounces per box. Which is the better price per ounce?
Romashka-Z-Leto [24]

Answer:

A) Cereal brand A

B) There is no table.

Step-by-step explanation:

A) divide each cereal price by the amount of ounces. Brand A is $0.13888 (rounds to $0.14). B is $0.14583 (rounds to $0.15) So, since cereal band A is less cost per ounce, its cheaper

B) This question cannot be answered, since there is no table.

5 0
3 years ago
Other questions:
  • Change 2.7 into a fraction
    12·2 answers
  • On the first day of spring and entire field of flowering trees blossom.The locus population Gaines 87% of its size every 2.4 day
    9·1 answer
  • Mr delaney broke his piggy bank with a sledge hammer and found that it only contained quarters and pennies. If he had a total of
    7·1 answer
  • Two buses depart two cities moving in the same direction. the speed of the first bus is 54 mph which is 60% of the speed of the
    11·1 answer
  • PLEASE HELP ASAP<br><br> What is the area of this polygon?
    15·1 answer
  • Determine the perimeter and area plzzzz help​
    13·1 answer
  • 9(x+4) Please find the equivalent expression.*​
    11·2 answers
  • Plzz help with an appropriate answer
    15·1 answer
  • a car travel 4hrs covers a distance of 480km how many hours does it take to cover a distance of 840km at the same constant speed
    11·1 answer
  • HURRY PLEASE 50 PONITS EACH WILL GIVE BRAINLIST!! NO LINKS PLEASE.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!