3 years ago

Each equation below is followed by several stories.

Mathematics

1 answer:

zloy xaker [14]3 years ago

7 0

Not sure sorry edit : oh sorry I was suppose to add this in the comment section

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Guess a number between 1-3 whoever gets it gets brainliest

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I guess the number 3

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A bag of marbles had 14 blue marbles and the rest were white. For a game, 16 marbles were chosen from the bag. Of these 16 marbl

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Step-by-step explanation:

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3 years ago

The number of cows on a farm increased by 60. Because of better food, the amount of milk from each cow went up from 12.8 liters

attashe74 [19]

Answer:

Step-by-step explanation:

Number of cows increased=60

Old quality of milk consumed=12.8litres

New Increase in milk consumed=15litres

Therefore the number of cows in the farm if the quality of milk is 1340litres=y

Therefore, 1cow =15litres

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Crossmultiply:

15litres×ycows=1340litres

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3 years ago

Which expression is equivalent to (-3)x+ (-3) (-12)?

julia-pushkina [17]

Answer:

Step-by-step explanation:

gimme brainliest

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3 years ago

Solve the system of equations algebraically.

andrew11 [14]

Answer: d. (17, 20)

Step-by-step explanation:

We have the following system of equations:

$x-3y=8$ (1)

$5x-4y=5$ (2)

Isolating $x$ from (1):

$x=\frac{8+3y}{4}$ (3)

Substituting (3) in (2):

$5(\frac{8+3y}{4})-4y=5$ (4)

Isolating $y$ :

$\frac{40}{4}+\frac{15 y}{4}-4y=5$ (5)

$10-5=4y-\frac{15 y}{4}$ (6)

$y=20$ (7)

Substituting (7) in (1):

$x-3(20)=8$ (8)

Isolating $x$ :

$x=17$ (9)

Hence, the correct option is d. (17, 20)

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3 years ago