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lana66690 [7]
2 years ago
9

Combine Like Terms: 2x + 3 - 5x + 8x + 3x2 + 2 Help please

Mathematics
1 answer:
Rufina [12.5K]2 years ago
8 0

Answer:

14x + 5

Step-by-step explanation:

group all the varaibles with x

2x - 5x + 8x + 3x^2

-3x + 8x + 9x

5x + 9x

=14x

now the regular numbers

3 + 2

=5

now put them together to get

14x + 5

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The amount c in grams of a 100 gram sample of carbon-14 remaining after t years is represented by the equation c= 100 (0.99988)t
tigry1 [53]

Answer: The amount of carbon-14 remaining after 4 years is 99.95 grams.

Step-by-step explanation:

Hi, to answer this question we simply have to substitute t=4 in the equation given and solve for c.

c= 100 (0.99988)^t

c =100 (0.99988)^4

c = 100 x 0.999520086

c= 99.95200864 ≅99.95 grams (rounded)

The amount of carbon-14 remaining after 4 years is 99.95 grams.

Feel free to ask for more if needed or if you did not understand something.

8 0
3 years ago
Please help me with this question!
Alina [70]

Answer:

see explanation

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°, thus

∠1 = 180° - (72 + 57)° = 180° - 129° = 51°

The right angle at the left vertex is composed of 72° and ∠2, thus

∠2 = 90° - 72° = 18°

57° and ∠3 form a straight angle and are supplementary, thus

∠3 = 180° - 57° = 123°

∠4 = 180° - (∠2 + ∠3 ) ← sum of angles in a triangle

∠4 = 180° - (18 + 123)° = 180° - 141° = 39°

4 0
3 years ago
Is -5/11 equivalent to -5/-11 ? Why or why not?
faltersainse [42]
No, -(5/11) is equivalent to -5 all over 11 so -5/11. You cannot change the denominator
3 0
2 years ago
Read 2 more answers
The correct and best answer will be marked as brainiest
marta [7]

Answer:

x=10

m=3

Step-by-step explanation:

The angles are the same since the sides are the same length (isosceles triangle)

55 = 5x+5

Subtract 5

55-5 =5x+5-5

50 = 5x

Divide by 5

50/5 = 5x/5

10=x

The altitude is a perpendicular bisector so

5m-3 = 2m+6

Subtract 2m from each side

5m-3-2m = 2m+6-2m

3m-3 = 6

Add 3 to each side

3m-3 +3 =6+3

3m =9

Divide by 3

3m/3 = 9/3

m =3

8 0
3 years ago
Help please i will mark brainliest シ♡︎
vlada-n [284]
You can use the slope intercept form for the line equation

6 0
2 years ago
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