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katovenus [111]
3 years ago
14

How do I solve number 1 ?

Mathematics
2 answers:
nekit [7.7K]3 years ago
6 0

Answer:

D.) 46 + 37i

Step-by-step explanation:

(5 - 4i)(2 + 9i)

use the FOIL method

10 + 45i - 8i + 36

collect like terms

(10 + 36) + (45i - 8i)

simplify

46 + 37i

DochEvi [55]3 years ago
4 0

Step-by-step explanation:

(5−4i)(2+9i)

=(5+−4i)(2+9i)

=(5)(2)+(5)(9i)+(−4i)(2)+(−4i)(9i)

=10+45i−8x−36i2

=−36i2+37i+10

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100 points pls help
blsea [12.9K]

Answer:

  • a) 2/3p
  • b) q + 1/2p

Step-by-step explanation:

<u>Given</u>

  • AB  = p
  • AD = q

a)

  • DC /AB = 3/2 ⇒
  • DC = 3/2AB = 3/2p

b)

  • BC = AD + (DC - AB)
  • BC = q + (3/2p - p) = q + 1/2p
8 0
3 years ago
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(7 - 10i) – (3 + 30i) =<br>Express your answer in the form (a - bi).<br>x​
Semenov [28]

Hey there! :)

Answer:

4 - 40i

Step-by-step explanation:

Subtracting the two expressions:

(7 - 10i) - (3 + 30i)

Distribute the negative sign:

7 - 10i - 3 - 30i

Combine like terms:

4 - 40i

3 0
4 years ago
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What is 2.54 times 12
krok68 [10]
the answer to this problem is 12/648
7 0
3 years ago
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Cari is searching online for airline tickets. Two weeks ago, the cost to fly from Boston to Hartiord was
cestrela7 [59]

Answer:

The percent of the air ticket went up 148%  plus the baggage fee would be 168%. The new total is 420$

Step-by-step explanation:

4 0
3 years ago
ein rechteckiger Bauplatz ist 39,5 m lang und 32,5 m breit . wie teuer ist der Grund ,wenn ein Quadratmeter Bauland 185,50 euro
Setler79 [48]

So first you need to find the area of the building site which is:

length x width

39.5m x 32.5m

= 1283.75m^{2}

We know that one square meter costs 185.50 euros.

1m^{2} = 185.50 euros

1283.75m^{2} = <u>238135.625 euros</u>

I'm not exactly that familiar with euros but I'm pretty sure that euros don't have 3 numbers after the point so the two nearest numbers are <u>238134.86 and 238135.86.</u>

sorry if this is wrong, but I hope it helps, if the euros part is wrong please correct me thanks!

7 0
3 years ago
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