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RoseWind [281]
3 years ago
14

Help me out with this

Mathematics
1 answer:
ella [17]3 years ago
6 0

Answer:

7.5

Step-by-step explanation:

2x+12=6x-18

2x=6x-30

-4x=-30

x=7.5

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The orbital period, P, of a planet and the planet’s distance from the sun, a, in astronomical units is related by the formula P
Ivanshal [37]

Answer:

44.3 is the one

Step-by-step explanation:

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6 0
3 years ago
Read 2 more answers
10 points.
Andrews [41]
A, 2^12.

3x - y = 12 can also be written as 3x - 12 = y

The fraction is 8^x / 2^y,
Substitute y = 3x - 12 into fraction,
8^x / 2^[3x - 12]
= 8^x / [(2^3)^x × 2^(-12)]
= 8^x / [(2 × 2 × 2)^x × 2^(-12)]
= 8^x / [8^x × 2^(-12)]
{8^x can be factorised out of numerator and denominator of fraction}
= 1 / 2^(-12)
{When the denominator becomes numerator, the power sign is switched from - to +}
= 2^(12)

Hope this helps! :)
8 0
3 years ago
Paula runs a stable. 20 horses currently board at the stable, and 8 of them are bay.
FrozenT [24]

Answer:

40% chance

Step-by-step explanation:

Take the number of horses total and divide the number of bay horses.

5 0
3 years ago
125 tickets were sold for the jazz band concert for a total of $1,022. Student tickets cost $6 each, and general admission ticke
Phoenix [80]

Answer:

The number of student tickets was 57

The number of general admission tickets was 68

Step-by-step explanation:

Let

x----> the number of student tickets

y---> the number of general admission tickets

we know that

x+y=125

x=125-y ---> equation A

6x+10y=1,022 ----> equation B

Substitute equation A in equation B and solve for y

6(125-y)+10y=1,022

750-6y+10y=1,022

4y=1,022-750

4y=272

y=68

Find the value of x

x=125-68=57

5 0
4 years ago
How many Solutions does this equation have<br> -2(5x + 6) = 2( -5x - 1)
vazorg [7]
None. Because when you solve for x, x is eliminated.
6 0
3 years ago
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