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nekit [7.7K]
3 years ago
6

Which of the following represents an elementA O 2B H2OC CO2D NO2​

Mathematics
2 answers:
nataly862011 [7]3 years ago
8 0

Answer:

I believe the answer is O2

liberstina [14]3 years ago
3 0

Answer:

A. Correct

B. Incorrect

C. Incorrect

D. Incorrect

Step-by-step explanation:

B, C, and D are compounds rather than elements

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Add (3x4−2x3+4x−2) and (3x3−2x2−x+4). Question 2 options:
Natalka [10]

Answer: 3x^4 +x^3 -2x^2 +3x +2

Step-by-step explanation:

(3x^4 - 2x^3 + 4x -2) + (3x^3 - 2x^2 - x +4)

There are no like terms for 3x^4, so leave it alone.

-2x^3 + 3x^3 = 1x^3

No like terms for -2x^2

4x - x = 3x

-2 + 4 = 2

Answer? 3x^4 +x^3 -2x^2 +3x +2

(Please mark brainliest! :) )

5 0
3 years ago
Read 2 more answers
PLEASE HELP! GIVING BRAINLIEST!
jeyben [28]

Answer:

The answer is A

Step-by-step explanation:

7 0
3 years ago
4. A sports car accelerates from rest to a final velocity of 64 m/s at a rate of 12.3
Ivanshal [37]

Answer:

t = 5.2\ s

Step-by-step explanation:

Given

a= 12.3m/s^2 --- acceleration

v = 64m/s --- final velocity

u =0m/s --- initial velocity (it is 0, because the car starts from rest)

Required

Determine the time taken

This will be solved using Newton's first equation of motion:

v = u + at

Substitute values for v, u and a

64 = 0 + 12.3*t

64 = 12.3t

12.3t = 64

Make t the subject

t = \frac{64}{12.3}

t = 5.2\ s

<em>Hence, the time taken is approximately 5.2 seconds</em>

6 0
3 years ago
What is 98/100 written as a decimal in terms of dollars ?
Nana76 [90]

Answer: 98/100 is .98$ or 98 cents

Step-by-step explanation:

100 cents is 1$

you have to put a decimal point in front of any number less than 100 in terms of money.

so you would put .98$ or 98 cents

8 0
3 years ago
PLS HELP ILL GIVE BRAINLIEST<br> What are the coordinates of the center of the ellipse?
yulyashka [42]

Answer:

Step-by-step explanation:

Standard equation of an ellipse,

\frac{(x-h)^2}{a^2}+\frac{(y-k)^2}{b^2}=1

(h, k) is the center of the ellipse

Value of a = Distance of the center from the vertex

b = Distance of the center from the covertex

From the picture attached,

a = Distance of the center (h, k) from the vertex (2, -2) = 3 units

b = Distance of the center (h, k) from the co-vertex (-1, 0) = 1 unit

Center of the ellipse (h, k) = (-1, -2)

4 0
3 years ago
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