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Xelga [282]
3 years ago
13

How do scientist know how atoms are structured

Mathematics
1 answer:
GrogVix [38]3 years ago
4 0

Answer:

In the current model, the number of electrons in the atom is determined by gamma and x-ray spectroscopy. The number of protons in the atom is chosen to balance the charge of the electrons in the atom. The number of neutrons in the atom is chosen to give the correct atomic weight for the element in question.

Step-by-step explanation:

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Rita paid $82 for 5 trees and 1 shrub. Lilly bought 2 trees and 1 shrub for $37. Find the cost per tree and the cost per shrub.
N76 [4]

Answer:

trees cost $15

Shrub cost $7

Step-by-step explanation:

Given data

Rita paid $82 for 5 trees and 1 shrub

5x+y= 82---------1

Lilly bought 2 trees and 1 shrub for $37

2x+y= 37----------2

from 1

y= 82-5x

put the value of y in 2

2x+82-5x= 37

2x-5x= 37-82

-3x=-45

x= 45/3

x=$15

put the value of x in 1

5(x)+y= 82

5*15+y=82

75+y=82

y=82-75

y=$7

Hence, trees cost $15

Shrub cost $7

4 0
3 years ago
Which of these expressions shows a correct way to set up the slope formula for the line that passes through the points (5, 0) an
vaieri [72.5K]

Answer:

C

Step-by-step explanation:

its c because if we input the numbers into the slope formula y2 - y1 over x2 - x1 it equals -6 - 0 over 6 - 5

3 0
3 years ago
Please help me with these 3 problems ASAP.
r-ruslan [8.4K]

Answer:

For the first question(B)

x=-2

x=5

For part C, the question is not clear

For the last question, the approximated value is -5/4

5 0
3 years ago
What is 63/80 as a percent?
Romashka [77]
63/80 x 100 = 78.8%

You divide normally but multiply by 100 (moving the decimal over two places).
6 0
3 years ago
Read 2 more answers
What does this look like in long division
vesna_86 [32]
Hey just to let you now it came out blury
3 0
4 years ago
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