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Murrr4er [49]
3 years ago
14

Help meeee i keep confusing myselffff

Mathematics
1 answer:
Brilliant_brown [7]3 years ago
4 0

Answer:

Its D

Step-by-step explanation:

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John flips a fair coin 40 times. How many times can he expect heads to appear?
nevsk [136]
The answer is 20, since it’s heads and tails you have a half and half chance, therefore you divide 40 in half and get 20
8 0
3 years ago
What equal 1/5^-2 what other fraction equals that
Anon25 [30]
1/2 and 2/4 I believe those are right
5 0
3 years ago
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How do you solve this
fiasKO [112]
(((x + y) / 3) + (1 / x)) / (5 + (15 / x))
The best way is to make it one fraction.
Multiply by ((3x/3x) / (3x/3x)) to remove the other fractions.
((x(x + y)) + 3(1)) / (5(3x) + 3(15))
(x^2 + xy + 3) / (15x + 45)
Then factor to simplify
(x^2 + xy + 3) / (3(x + 15))



4 0
3 years ago
The diameter of the Sun is about 1.4 x 106 km. The diameter of the planet
den301095 [7]

Answer:

1.17*10²

Step-by-step explanation:

Diameter of the sun is about 1.4 × 10⁶ km

1.4*10⁶ km = 1,400,000

Diameter of the planet venus is about 12000 km

12000 km = 1.2 × 10⁴

Ratio of the diameters

Sun : Venus

1.4 × 10⁶ km : 1.2 × 10⁴

1.4 × 10⁶ km / 1.2 × 10⁴

1.4 / 1.2 × 10^6-4

1.166 × 10²

Approximately

1.17 × 10²

7 0
2 years ago
Double the difference between 7 and y
pickupchik [31]

Answer:

Difference indicates subtraction: The difference of a number and 9 is (x−9) Twice the difference means 2(x−9) We know that the answer to this is 2 , so as an equation: 2(x−9)=2.

Step-by-step explanation:

:|

7 0
2 years ago
Read 2 more answers
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