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maria [59]
3 years ago
13

Simplify 2a + 4 - 7a + a. -a 0 -4a + 4 10a + 4

Mathematics
2 answers:
Masja [62]3 years ago
6 0
Combine like terms so 2a-7a+a=-4a there is nothing to combine with the 4 so it is -4a+4.

Hope that helps.
den301095 [7]3 years ago
6 0
2a+a=3a-7a=-4a so ur answer is c

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Guess the mystery number...
Snowcat [4.5K]
<span>The number is less than 190,000 and greater than 180,000
5,000 more than the number has 187 thousands
2000 less than the number has 4 hundreds

180, 000 <n> 190, 000</span>
180,000 + 2000 = n = 5000-187, 000
182,000 = n = 182, 000  
Or, 
 <span>180, 000 <n> 190,000      </span>               
 <span>n + 5000= 187, 000                           n – 2000 = 180, 000</span> <span>
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 n= 182, 000                                       n= 182, 000</span>



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3 years ago
The mean grade in Mathematics of Grade 11 students from school A is 83 with standard deviation of 4, while the mean grade in Mat
Ulleksa [173]

Using the context surrounding the word trough in line 9 of "Concrete Mixers," explain what a trough looks like and what it does on a concrete mixer. .

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7 0
3 years ago
How does knowing types of acids and bases assist in determining the properties of a compound?
Oksana_A [137]

Answer:

There are three major classifications of substances known as acids or bases. The Arrhenius definition states that an acid produces H+ in solution and a base produces OH-. This theory was developed by Svante Arrhenius in 1883. Later, two more sophisticated and general theories were proposed. These are the Brønsted-Lowry and the Lewis definitions of acids and bases. The Lewis theory is discussed elsewhere.

Step-by-step explanation:

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6 0
4 years ago
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Answer:

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Step-by-step explanation:

the circumference is 2\pir. Since the radius is one, that would be 2\pi.

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CHECK: 2\pi = 6.283

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4 0
3 years ago
A bag contains six red marbles and three
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