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Vlada [557]
3 years ago
7

12 students have bikes half of the bikes are black one 6th of the bikes are silver one 4th of the bikes are red and the rest are

blue how many bikes are there for each color
Mathematics
1 answer:
natka813 [3]3 years ago
8 0
6 are black, 2 are silver, 3 are red, and 1 is blue; you find this answer by creating fractions and finding like terms with one another, since all numbers are similar i found it easier to use the term 24 as a common denominator.
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Solve 7x+3y=8 and 4x-y=-9 simultaneously
Jobisdone [24]

Answer: x = -1 and y = 5

Step-by-step explanation:

7x + 3y = 8 ........................... equation 1

4x - y = - 9 ............................ equation 2

Solving the simultaneous linear equation by substitution method , make y the subject of the formula from equation 2 , we have

y = 4x + 9 ............................. equation 3

substitute y = 4x + 9 into equation 1 , we have;

7x + 3 ( 4x + 9 ) = 8

7x + 12x + 27 = 8

19x + 27 = 8

subtract 27 from both sides

19x = -19

divide through by 19

x = -1

substitute x = -1 into equation 3 , we have

y = 4 ( -1) + 9

y = -4 + 9

y = 5

Therefore :

x = -1 and y = 5

5 0
3 years ago
Solve for s.<br> S+ 24 = 90
Verdich [7]

Answer:

66 = s

Step-by-step explanation:

s + 24 = 90

90 = s + 24

90 - 24 = s

66 = s

7 0
3 years ago
Read 2 more answers
Please help will give brainliest.
Viefleur [7K]

Answer:

D

Step-by-step explanation:

a is false since x could be 0.

b is easy to check, just plug numbers in, and we can see that it's false(you would get 0+0=1 and -0-0=-1 once plugged in)

c is also easy to check, just plot the line or simplify the first equation. since (2x+2y)/2=4/2 is also x+y=2, the second equation is also x+y=2, so it must have infinitely many solutions.

d must be true due to process of elimination but let's check to make sure.

7y=14x, divide both sides by 7 to get y=2x and since they're the same equation it must mean that they have infinitly many solutions and we can see that it is correct

4 0
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Sonbull [250]

A.) the height of a jump rope being used over time

8 0
3 years ago
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Habeas Corpus: legal writ or order. Guarantees a prisoner the right to be heard in a court
Yanka [14]

Habeas corpus is the right to have one’s detention reviewed by a judge

8 0
3 years ago
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