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Zielflug [23.3K]
3 years ago
12

Lexi answers 45 questions correctly on a test and earns a 90%. How many questions were on the test?

Mathematics
1 answer:
Wewaii [24]3 years ago
5 0

Answer:50%*^^\*\*\£\€\>\€\\^^\€\\>€\€]*]*\€\!\€\^\*\*\£\££

Step-by-step explanation:

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A cylindrical cardboard mailing tube has a diameter of 5 in. and a height of 30 in. A total of 30% of the tube’s capacity is fil
olga2289 [7]
First is to get the volume of the cylinder.
Volume = pi * r^2 * H
Volume = 3.1416 * (5/2)^2 * 30
Volume = 589.05 in^3

30% is already filled.
Filled Space = 589.05 * 0.30
Filled Space = 176.715 in^3
Empty Space = 412.335 in^3

Next, get the volume of the sphere.
V = (4/3)*pi*r^3
V = (4/3)*pi*(0.6/2)^3
V = 0.1130976 in^3

Number of foams = Filled Space / V
Number of foams = 176.715 / <span>0.1130976 
Number of foams = 1562 Foams</span>
5 0
3 years ago
A motor scooter travels 14 mi in the same that a bicycle covers 5 mi. If the rate of the scooter is 4mph more than twice the rat
nignag [31]
We observe that 14 is 4 more than twice 5.

The scooter's rate is 14 mph.
The bicycle's rate is 5 mph.
_____
time = distance/rate
14/(2b +4) = 5/b . . . . . . let b represent the bicycle's speed in mi/h
14b = 10b +20 . . . . . . . .cross multiply
4b = 20 . . . . . . . . . . . . . subtract 10b
b = 5 . . . . . . . . . . . . . . . divide by 4. Same answer as above.
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4 years ago
Grapes explode in the microwave be careful
Dominik [7]

Answer:

they can??!!!

Step-by-step explanation:

omigod wowoow

3 0
3 years ago
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The triangle A B C will be the image of triangle of A B C in origin (0,0)

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