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Zanzabum
3 years ago
11

jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equa

tion to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning
Mathematics
1 answer:
morpeh [17]3 years ago
5 0
He is correct. since it is double the amount of B, he can do Bx2, or b+b
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Write the expanded form of the expression 5(2x-8)
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3 0
3 years ago
Prove it disprove: if 2n + 4 is even then n is even.
svetoff [14.1K]

The first claim,

"If 2<em>n</em> + 4 is even, then <em>n</em> is even"

is false; as a counterexample, consider <em>n</em> = 1, which is odd, yet 2•1 + 4 = 6 is even.

The second claim,

"If <em>n</em> is even, then (<em>n</em> + 3)² is odd"

is true. This is because

(<em>n</em> + 3)² = <em>n</em> ² + 6<em>n</em> + 9

<em>n</em> ² + 6<em>n</em> is even because <em>n</em> is even. 9 is odd. The sum of an even and odd integer is odd.

8 0
3 years ago
Divide:<br> 8.9) 810.434
Artyom0805 [142]

Answer:

91.06

Step-by-step explanation:

Step 1:

810.434 ÷ 8.9

Answer:

91.06

Hope This Helps :)

6 0
3 years ago
OMG 25 POINTS!!!! HURRY AND GET SOME BRAINLIEST But MAKE SURE ANSWER IS RIGHT OR ILL REPORT YOU!!!!
Andrew [12]

The correct answer is the fourth option.

Given is a scatter graph with points marked on the graph. The x axis shows the dependent variable and y axis the independent variable

From the graph we see that there seems to be a linear relationship but not fully perfect.  Because so many points deviate from the line we can only say that there is a moderate association.

Whenever x increases y increases also the linear regression line of fit has a positive scope.

Hence there is a positive association between variable x and variable Y.

3 0
3 years ago
A car travels 15 km in 13 minutes. What is its average speed in km/h?
Bogdan [553]

Answer:

  • 69.45 km/h

Step-by-step explanation:

  • Speed = Distance/Time
  • => Speed = 15 km ÷ 13/60
  • => Speed = 15 km ÷ 0.216
  • => Speed = 15 km/0.216
  • => Speed = 15 x 4.63/0.216 x 4.63
  • => Speed = 69.45 km/1 h (Approximate)

<u>Conclusion:</u>

  • Therefore, the speed is 69.45 km/h (Approximate)

Hoped this helped.

3 0
3 years ago
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