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Phantasy [73]
3 years ago
11

Which of the following correctly combines these terms? 3a + 6b - 7a + (-3b) + 9c

Mathematics
1 answer:
ElenaW [278]3 years ago
8 0

Answer:

I

Step-by-step explanation:

We have to added up the like therms

like therms are therms with the same literal parts

3a - 7a = -4a

6b-3b= 3b

-4a + 3b+ 9c

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What is 83 + 119 + 17 =
Fittoniya [83]

Answer:

219

Step-by-step explanation:

83 + 119 = 202

202 + 17 = 219

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The rational expression below is also equal to _____?<br>​
Dvinal [7]
The answer is 2 bc I got it right on a quiz
3 0
3 years ago
6x - 2 ( x + 4 )= 12
ElenaW [278]

Answer:

x = 5

Step-by-step explanation:

5 0
3 years ago
What is the least common denominator (LCD) of 12 and 23?
leva [86]

Answer: none of those, 276...?

Step-by-step explanation:

You need to know the least common denominator (LCD) of 12 and 23 if you want to add or subtract two fractions with 12 and 23 as denominators.

The least common denominator, also called lowest common denominator (LCD), of 12 and 23 is 276.

Here is a math problem example where you need to know the LCD of 12 and 23 to solve:

3/12 + 2/23 = ?

Step 1) Take the LCD and divide each denominator by it as follows:

276/12 = 23

276/23 = 12

Step 2) Multiply each nominator with the respective answers from Step 1:

3 x 23 = 69

2 x 12 = 24

Step 3) Put it all together to solve the problem:

69/276 + 24/276 = 93/276

= 3/12 + 2/23 = 93/276

It's that easy! Once again, the lowest common denominator (LCD) of 12 and 23 is as follows:

276

7 0
3 years ago
Can someone helps me with these 2 questions?
Firdavs [7]

3/5 = 75/x

75/3 = 25

5 x 25 = 125

3/5 = 75/125

Book has 125 pages

6 3/4 ÷ 4 1/2 = 1 1/2

1 1/2 times as long

6 0
4 years ago
Read 2 more answers
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