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solmaris [256]
3 years ago
15

Easy one - giving brainly if correct!​

Mathematics
2 answers:
attashe74 [19]3 years ago
5 0

Answer:

option 4 is the right answer

Alex73 [517]3 years ago
3 0

Answer:

The last option is right

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Peirce swims 10 laps in a pool in 8 minutes how much time does it take him to swim 1 lap
Jobisdone [24]

10 laps in 8 minutes

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              10

1 lap in 8/10 (4/5) of a minute

Answer is B, 8/10 minute!

⭐ Please consider brainliest! ⭐

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7 0
3 years ago
How many liters would 60 mega-liters be?<br> Help
san4es73 [151]

Answer:

6e+7

Step-by-step explanation:

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5 0
3 years ago
Read 2 more answers
Please help me
Furkat [3]
9x^3-39x^2-38x+40=(3x-2)(3x+4)(x-5) by synthetic division
Thus roots are -4/3, 2/3, 5
8 0
2 years ago
Solve the system (x-1)²+(y-2)²=2² and y=2x+2.
Likurg_2 [28]

Answer:

  (x, y) = (-0.6, 0.8)  or  (1, 4)

Step-by-step explanation:

Use the second equation to substitute for y in the first.

 (x -1)² +((2x +2) -2)² = 4

  x -2x +1 + 4x² = 4 . . . . . . . eliminate parentheses

  5x² -2x -3 = 0 . . . . . . . . . . subtract 4, collect terms

Now we can rearrange the middle term to ease factoring by grouping.

  (5x² -5x) +(3x -3) = 0

  5x(x -1) +3(x -1) = 0

  (5x +3)(x -1) = 0

The values of x that make these factors zero are ...

  x = -3/5, x = 1

The corresponding values of y are ...

  y = 2(-3/5)+2 = 4/5 . . . . for x = -3/5

  y = 2(1) +2 = 4 . . . . . . . . for x = 1

The solutions are: (x, y) = (-3/5, 4/5) or (1, 4).

___

A graphing calculator verifies these solutions.

3 0
3 years ago
The difference of 3 times a number and 20 is greater then 10
Novosadov [1.4K]
If the number is x, then 3 times x -20 >10 and 3x-20>10. Adding 20 to both sides, we get 3x >30 and by dividing by 3 we get x >10
3 0
3 years ago
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