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stira [4]
3 years ago
15

1) Simplify the expression

Mathematics
1 answer:
bazaltina [42]3 years ago
4 0

Answer:

21 + 12i

Step-by-step explanation:

Given

(3 - 4i)(1 + 5i) - (2 - i) expand the product of factors

= 3 + 11i - 20i² - 2 + i

= 3 + 11i + 20 - 2 + i  collect like terms

= 21 + 12i

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Brilliant_brown [7]

Answer:

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Step-by-step explanation:

B

6 0
3 years ago
6. Do planes GFE and HBC intersect? Explain.
BaLLatris [955]

Answer:

yes at line HE.

Step-by-step explanation:

Plane GFE is the plane that contains face EFGH of the prism.

Plane HBC is the plane that contains face BCEH of the prism.

The two planes do intersect, and their intersection is line HE.

3 0
3 years ago
A hiker walks at a speed of 3 2/5 kilometers per hour. How many kilometers will the hiker walk in 40 minutes?
bija089 [108]

Answer:

2  4/15 km

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The square root of 72 is between which two whole numbers?
Nina [5.8K]

Answer:

The answer is D

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Please I need help . I will brainlist
liraira [26]
Firstly,we need to understand the properties of a parallelogram:

-Opposite sides are parallel by .
-Opposite sides are congruent.
-Opposite angles are congruent.
-The diagonals bisect each other.

Therefore in this case:
XW must be congruent to YZ.
WZ must be congruent to XY.

Hope it helps!
4 0
3 years ago
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