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alex41 [277]
3 years ago
14

What is the atomic number of an atom?

Mathematics
1 answer:
Anastasy [175]3 years ago
7 0

Answer:

the number of protons in the nuclues of an atom

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I Nisa buy dollars worth of stock and gained $25 per year Kevin bad for hundred dollars worth of stock in the last $35 per year
alisha [4.7K]

Answer: x= 5 years and y = $225

Step-by-step explanation:

Since we have given that

Amount Nisa gained per year = $25

Amount Kevin lost per year = $35

According to question,

y=100+25x\\\\and\\\\y=400-35x

so, it becomes,

100+25x=400-35x\\\\25x+35x=400-100\\\\60x=300\\\\x=\frac{300}{60}\\\\x=5

so, For x= 5 years,

Their income of Nisa and loss of Kevin will be

y=100+25x\\\\y=100+25\times 5\\\\y=100+125\\\\y=\$225

4 0
3 years ago
Find the 8th term of the geometric sequence: 1/3, -1, 3
olga55 [171]

Step-by-step explanation:

a= 1/3

common ratio = -3

the 8th term is given by,

a {r}^{7}  =  \frac{1}{3}  \times  {( - 3)}^{7}

=  - 729

7 0
3 years ago
Two cars leave towns 750 kilometers apart at the same time and travel toward each other. One car's rate is 20 kilometers
Tanya [424]

Answer:

Step-by-step explanation:

add up their speed.

combined speed = x+ 1 x + 10

( 2 x + 10 )

Time = 5 hours

Distance = 750 miles

Distance = speed * time

( 2 x 10 )* 5 = 750

10 x + 50 = 750

10 x = 750 + -50

10 x = 700

/ 10

x= 70 mph Car A

Car B 70 + 10 = 80 mph

4 0
3 years ago
Find the perimeter of ABHG. Round your answer to the nearest tenth of an inch.
frozen [14]

Answer:

141.5

Step-by-step explanation:

because, x=26.5 and y=4 and then, its just plugining it into the equation Im not sure about the x and y but, I took the test and got it right.

5 0
3 years ago
What is 1/4 times exponent 4
lilavasa [31]
Change 1/4 to a decimal is an exponent by 4 and the answer would be 0.0039
5 0
3 years ago
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