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ra1l [238]
3 years ago
12

Sela's piano lesson starts at 4:45pm. The lesson is 30 minutes long. When does her lesson end

Mathematics
1 answer:
fredd [130]3 years ago
8 0

Answer:

5:15

Step-by-step explanation:

Split the 30 mins in half. 45+15 = 60 (a new hour) Now, its 5:00. Add 15 and you get the answer.

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Im never using brainly ever again the answers are wrong so here is you question
JulijaS [17]
2 + 2 = 4
4 + 6 = 10
10 + 10 = 20
20 + 65 = 85
85 + 96 = 181 :)
7 0
3 years ago
Read 2 more answers
a school counts the number of students taking AMDM and find 221 students taking AMDM. they also count the number of students tak
Masja [62]

Answer:

33.195%

Step-by-step explanation:

AMDM: 221 students

Physics: 241 students

Taking both: 80 students

80/241 = ~33.195%

4 0
3 years ago
A car and a motorcycle leave the city at the same time and drive to a lake that is 120 km away. The speed of the motorcycle is 2
iris [78.8K]

Answer:

  • 40 km/h and 60 km/h

Step-by-step explanation:

Let the speed of the car is x, then the speed of motorcycle is x + 20

The distance = 120 km

<u>Time:</u>

  • 120/x = 120/(x + 20) + 1
  • 120(x + 20) = 120x + x(x +20)
  • 120x + 2400 = 120x + x² + 20x
  • x² + 20x = 2400
  • x² + 2*10x + 10² = 2500
  • (x + 10)² = 50²
  • x  + 10 = 50
  • x = 40

Speed of the car is 40 km/h

Speed of the motorcycle is 60 km/h

3 0
2 years ago
Read 2 more answers
HELP PLEASEEE 9th Grade Geometry
Shtirlitz [24]

Step-by-step explanation:

AD ≅ BC, Given

∠BCD ≅ ∠ADC, Given

CD ≅ CD, Reflexive property

ΔBCD ≅ ΔADC, SAS congruence

∠BDC ≅ ∠ACD, CPCTC

ΔECD is an isosceles triangle, definition of isosceles

DE ≅ CE, properties of isosceles triangles

6 0
3 years ago
Traveling with the current, a boat covers a distance 1.5 times greater than traveling against the current in the same amount of
jeka94
Let the speed of the current equal c
and the speed of the boat in still water equal b.

b + c = 1.5 (b - c)
b + c = 1.5b - 1.5c
0.5b = 2.5c
b = 5c

The speed of the current is 1.5 mph so
b = 5 * 1.5 = 7.5 mph
4 0
3 years ago
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