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gladu [14]
2 years ago
15

If C=r+7 and D=-2r+3, find an expression that equals 2C−D in standard form.

Mathematics
2 answers:
quester [9]2 years ago
6 0
4r+11 is the answer
Serhud [2]2 years ago
5 0

Answer:

\huge\boxed{\boxed{\bf\:4r + 11}}

Step-by-step explanation:

Given,

  • C = r + 7
  • D = - 2r + 3

We need to find the value of 2C - D. To solve this, we need to substitute the values of C & D in the expression.  So,

\tt\:2\:C - D\\\\\sf\:{Substitute \: the \: given \: values}\\\\\tt\:= 2(r + 7) - (-2r + 3)\\\\\sf\:Now, \: follow \: the \: distributive \:property\\\\\tt\:= 2r + 14 + 2r - 3\\\\\sf\:Rearrange\:the\:terms\\\\\tt\:= 2r + 2r + 14 - 3\\\\\sf\:Do \: the \: required \:arithmetic \: operations\\\\=\boxed{ \bf\:4r + 11}

\rule{200}{2}

  • The answer will be <u>4r + 11 </u> in the standard form.

\rule{200}{2}

Hope this helps!

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Lilly takes a train each day to work that averages 35 miles per hour. On her way home, her train ride follows the same path and
Nutka1998 [239]

Answer: - n/35+n/45=2.5 or just 49.22

Step-by-step explanation:

use the formulas t total=t1+t2 and V=n/t

n=distance, V=speed, and t=time

35=n/t1, and t1=n/35

her train ride follows the same path at 45mph

45=n/t2, and t2=n/45, so then you get - n/35+n/45=2.5

Hope this helps, now you know the answer and how to do it. HAVE A BLESSED AND WONDERFUL DAY! As well as a great rest of Black History Month! :-)  

- Cutiepatutie ☺❀❤

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Answer:

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3 years ago
Big Dog Building is the one of the largest cement companies in the Midwest. When the firm raised its prices by 11 percent, all o
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Answer: Status-quo pricing strategy

Step-by-step explanation:

From the given case/scenario, we can state that this industry is influenced by status-quo pricing strategy. This pricing strategy is referred to to as the strategy under which a company or organization copies the price level of the competitors or tries to maintain current price level for similar products, commodities or services available in market. The status quo is mostly defined by the way things persists , instead of the way it could be.

4 0
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Is 0.008 greater or less than 0.08?
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Read 2 more answers
I FORGOT HOW TO DO THIS I NEED HELP ASAP!!!
Sidana [21]
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