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mario62 [17]
2 years ago
10

Which equation illustrates the identity property of multiplication? (x + yi) × z = (xz + yzi) (x + yi) × 0 = 0 (x + yi) × (z + w

i) = (z + wi) × (x + yi) (x + yi) × 1 = (x + yi)
Mathematics
1 answer:
Ilia_Sergeevich [38]2 years ago
8 0

Answer: (x + yi) × 1 = (x + yi)

Step-by-step explanation:

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Can someone please help me with this math problem.
mr Goodwill [35]
PART A:
Find the rate of change between 1980 and 1989
d for P₁ = 80 - 60
d for P₁ = 20

d for P₂ = 76 - 82
d for P₂ = -6

The rate of change in P₁ is 20 hundred per year. The rate of change in P₂ is -6 hundred per year.

PART B:
Find the rate of change between 1989 and 1996
d for P₁ = 100 - 80
d for P₁ = 20

d for P₂ = 70 - 76
d for P₂ = -6

The rate of change in P₁ is 20 hundred per year. The rate of change in P₂ is -6 hundred per year.

PART C:
Find the rate of change between 1980 and 1996
d for P₁ = 100 - 60
d for P₁ = 40

d for P₂ = 70 - 82
d for P₂ = -12

The rate of change in P₁ is 40 hundred per year. The rate of change in P₂ is -12 hundred per year.
4 0
3 years ago
Find the value of x and the value of y.
Zolol [24]
5x - 100 + x - 20 = 180 (sum of supplementary angles is equal 180)
6x - 120  = 180
6x = 300
  x = 50

x - 20 = 50 - 20 = 30

so
3y = 30 (vertical angles are equal)
 y = 10
4 0
3 years ago
PLEASE 25 POINTS!!!!!!
Rufina [12.5K]
-4.9t²+7.5t+1.8=2.1
-4.9t²+7.5t-0.3=0

t=-7.5±√(56.25-4*-4.9*-.3)/-2*4.9

t=-7.5±√(44.49/-9.8

t=(-7.5±6.67)/-9.8

t=-.83/-9.8 = .085 or t= -14.17/-9.8 = 1.446
8 0
3 years ago
Read 2 more answers
What is 38.95 rounded to the nearest tenth
Degger [83]
39. because its close to it lol. 
4 0
3 years ago
Plz help me asap i will mark you brainly
Maksim231197 [3]

Answer:

2.5 hours

Step-by-step explanation:

Divide the travelled miles by the amount of hours to get the travelled miles for one hour. (17 miles in 1 hour) Then divide 42.5 by 17 to get the amount of time it takes to go 42.5 miles. (42.5 miles in 2.5 hours)

Hope this helps!

7 0
3 years ago
Read 2 more answers
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