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serg [7]
3 years ago
15

Please help . I’ll mark you as brainliest if correct !!!!

Mathematics
2 answers:
vredina [299]3 years ago
5 0

Answer:

12 seconds

Step-by-step explanation:

jenyasd209 [6]3 years ago
5 0
The answer is 6.5 seconds
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Solve the system by elimination.. x+5y-4z=-10. 2x-y+5z=-9. 2x-10y-5z=0. . a.) (5, –1, 0). b.) (–5, 1, 0). c.) (–5, –1, 0). d.) (
Troyanec [42]

Answer:

Your answer is option C … (-5, -1, 0)


Step-by-step explanation:


3 0
3 years ago
A bag contains 100 marbles which are red, green, and blue. Suppose a student randomly selects a marble without looking, records
ra1l [238]

Answer:

35 red marbles

Step-by-step explanation:

So we can put the different color marbles in a ratio. So 7:2:11. If we add all of those up we get 20. We do 100/20 to get 5. Each number in the ratio is equivalent to 5 marbles. Then we do 7*5 to get 35. We can check our work by doing, (7*5) + (2*5) + (11*5) = 100. And it does equal 100 so the answer is correct.

6 0
3 years ago
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9^2 - (4) (2) (-6) what is the answer?
Rus_ich [418]

Answer:

129

Step-by-step explanation:

pls heart and give brainliest much appreciated

4 0
3 years ago
What is the lcd for the fractions 5/12 and 7/18?
Yakvenalex [24]
Denoms are 12 and 18

12=2*2*3
18=2*3*3
lcd=2*2*3*3=36

lcd=36


3 0
3 years ago
Find the percent of change the original cost was 50. And the new cost is 60
Ivan

Answer:

20%

Step-by-step explanation:

7 0
3 years ago
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