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morpeh [17]
3 years ago
13

Which expression is equivalent to 2x2 + (4x - 6x2) + 9 - (6x + 3)?​

Mathematics
2 answers:
Dmitrij [34]3 years ago
6 0

Answer:

-4x^2-10x+6

Step-by-step explanation:

Troyanec [42]3 years ago
4 0

Answer:

-4x^2-10x+6

Step-by-step explanation:

I am going to assume the (Something)x2 means (Something)x^2. Then, the expression is 2x^2-6x^2\\+4x-6x+9-3=-4x^2-10x+6

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ivolga24 [154]

Answer:

The greates amount she could buy is 4

8 0
3 years ago
Find the difference.
Scorpion4ik [409]

Answer:

Is that the letter (x) or Is that times?

If it is times; then the difference is:

Option "C" -12x2-x-7

Step-by-step explanation:

why, because it is not solvable

3 0
3 years ago
The sum of first three terms of an arithmetic series is 21. If the sum of the first two terms is subtracted from the third term
Ronch [10]

Answer:

The terms are - 1, 7 and 15.

Step-by-step explanation:

Let the terms be a-d, a and a+d

ATQ, a-d+a+a+d=21, a=7. a+d-(a+(a-d))=9. d=8. The terms are - 1, 7 and 15.

5 0
3 years ago
What is 3 1/6 + 8 2/9 - 1 1/2 ?
dalvyx [7]
When you put 31/6 to 5 1/6 and 8 2/9 to 8 2/9 and 11/2 to 5 1/2. Then you change the denominators to 18, so you get 5 3/18 + 8 4/18 - 5 9/18. So you add the 5 3/18 and 8 4/18 to get 13 7/18. Then you subtract 13 7/18 by 5 9/18 to get  7 8/18. simplest form you will get 7 4/9. Your welcome.  
6 0
3 years ago
What is the circumference if the diameter is 21in and pi is 22/7
Ede4ka [16]

Answer:

66 in

Explanation:

the circumference can be calculated as:

C=d\cdot\pi

Where d is the diameter and π is 22/7.

So, replacing the values, we get:

C=21\cdot\frac{22}{7}=\frac{21\cdot22}{7}=\frac{462}{7}=66\text{ in}

Therefore, the circumference is 66 in.

6 0
2 years ago
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