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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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Hey.........................
motikmotik

Answer:

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3 years ago
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HELP EMERGENCY!!!! (2.5 x 10-10) (7 x 10-5)<br> Express your answer in scientific notation.
dangina [55]

Answer:

1.75 × 10^{-15}  

I hope this helps!

8 0
2 years ago
Find the 87th term of this sequence: 157, 150, 143, ...
nirvana33 [79]

Answer:

<h3>                 \bold{a_{87}=-445}</h3>

Step-by-step explanation:

a_1=157\\a_2=150\\\\d=150-157=-7\\\\a_n=a_1+d(n-1)\\\\a_{87}=157+(-7)(87-1)=157-7\cdot86=-445

7 0
3 years ago
PLEASE ANSWER ASAP WORTH 100 points get it right please
Trava [24]

Answer:

See below.

Step-by-step explanation:

Part A:

triangle QPR and triangle PSR are similar

Part B:

Triangle QPR is a right triangle with right angle QPR.

Triangle SPR is a right triangle with right angle PSR.

Angle QPR of triangle QPR corresponds to and is congruent to angle PSR of triangle PSR.

Angle R of triangle QSR corresponds to and is congruent to angle R of triangle PSR.

The similar triangles by AA Similarity are

triangle QPR and triangle PSR

Part C:

QR/PR = PR/SR

16/PR = PR/4

PR² = 16 * 4

PR² = 64

PR = 8

8 0
2 years ago
The stem-and-leaf plot shows kilometers walked by participants in a charity benefit walk. Use it to answer the questions. a. Des
aivan3 [116]

Answer / Explanation

The question is incomplete. It can be found in search engines:

However, kindly find the complete question below:

Question:

The stem and leaf plot shows kilometers walked by participants in a charity benefit walk. Use it to answer the question

12|3 3 6 7 9 9

13| 1 1 4 5 5

14| 0 0 2 3 3 8 8 9

15| 2 2 2 2 2 3 5 5 7

16| 4 5 5 9 9

17|3 5

(a) How many people participated in the walk? Exactly 35 people participated in the walk.

(b)How many of the walkers traveled more than 14 kilometers? About 16-22 people traveled more than 14 kilometers.

Answers:

(a) Exactly 35 people participated in the walk.

(b) About 16-22 people traveled more than 14 kilometers.

4 0
3 years ago
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