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Semenov [28]
3 years ago
7

Which list of elements is arranged in order of increasing atomic number?

Mathematics
1 answer:
insens350 [35]3 years ago
5 0

Answer:

B. F, Cl, Br, I

Step-by-step explanation:

The atomic nunbers are 9, 17, 35, 53

Have a good day!

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Y varies directly as x.if y=-5 when x =15find x when y=3
Tpy6a [65]
Y=kx
-5=k(15)
-5/15=k
-1/3=k
now,
y=-1/5x
3=-1/5x
3×5=-1(x)
15=-1(x)
multiplying both sides by -1,we get
-15=x
3 0
3 years ago
Circle O has a circumference of approximately 44 in. What is the approximate length of the diameter, d? inches
LenKa [72]
The distance around a rectangle or a square is as you might remember called the perimeter. The distance around a circle on the other hand is called the circumference. It is calculated as follows:

C = 2pi(r)

From this, we can solve for r and evetually solve for the diameter.

44 = 2pi(r)
r = 7.00
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3 years ago
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a) 27. b) 8/3

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2 years ago
Darell parks his car in a parking garage. The garage charges a certain amount for the first hour and an hourly rate for each add
mestny [16]

Answer:

charges for the first hour = $7.55

charges for each additional hour = $1.55

c = 1.55h + 7.55

Step-by-step explanation:

Let

x = charges for the first hour

y = charges for each additional hour

x + 2y = 10.65 (1)

x + 5y = 15.30 (2)

Subtract (1) from (2)

5y - 2y = 15.30 - 10.65

3y = 4.65

y = 4.65/3

= 1.55

y = $1.55

Substitute y = 1.55 into

x + 2y = 10.65

x + 2(1.55) = 10.65

x + 3.10 = 10.65

x = 10.65 - 3.10

= 7.55

x = $7.55

c = 1.55h + 7.55

3 0
3 years ago
Dan earns £9.80 per hour. How much will he earn for 8 hours work?
jok3333 [9.3K]

Answer:

78.40

Step-by-step explanation:

Take 9.80 and times it by 8 to get 78.40

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3 years ago
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