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kirza4 [7]
3 years ago
13

-3a + 12b=24 -a+9b=6

Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
6 0
Antti entered a -kilometer race. His goal is to finish in one hour. He starts off sprinting, and completes the first  kilometers of the race at an average speed of  kilometers per hour.

To achieve his goal of a one-hour finish time, what average speed (in kilometers per hour) must Antti maintain for the last  kilometers of the race?

Enter your answer as a number in decimal form, without units.Hint(s):













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Answer:

Brain

Step-by-step explanation:

7 0
3 years ago
Brittany removed half of the total number of marbles from her bag, and gave one fourth of the remaining marbles to her friend. W
patriot [66]

The fraction of the total number of marbles is left in the bag after removing and giving part to her friend is 3/8

<h3>Fraction</h3>

let

  • Number of marbles in her bag = x
  • Number of marbles removed from her bag = 1/2x

Remaining marbles = x - 1/2x

= (2x-x) / 2

= x/2

= 1/2x

Number of marbles given to her friend = 1/4 of 1/2x

= 1/4 × 1/2x

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Number of marbles left in the bag = Remaining marbles - Number of marbles given to her friend

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= (4x-x) / 8

= 3x/8

= 3/8x

Learn more about fraction:

brainly.com/question/11562149

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3 0
2 years ago
Plzz help me out look at the pic
Nookie1986 [14]

Answer:

(B) 10

Step-by-step explanation:

Rate of change is basically slope

So the slope here is 10/1 so the rate of change is 10

6 0
3 years ago
Read 2 more answers
The Tigers, a football team, must gain 10 yards in the next four plays to keep possession of the ball . The Tigers lose 12 yards
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No because They lose 12 sand that puts them at -12. Then they gain 5 which puts them at -7 and then they lose 8 which puts them at -15. Please mark as brainliest

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What is 765903 rounded to the nearest ten thousand
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