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2 years ago

Easy algebra question below first correct answer gets brainliest

Mathematics

1 answer:

Aliun [14]2 years ago

8 0

Answer:

$x = \sqrt{5}$

Step-by-step explanation:

$3 {x}^{2} + 5 {x}^{2} = 35$

$8 {x}^{2} = 35$

${x}^{2} = 5$

$\sqrt{ {x}^{2} } = \sqrt{5}$

$x = \sqrt{5}$

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A farmer was counting his chickens and pigs. He had 16 animals in all and counted 54 legs. How many chickens does he have

Vikentia [17]

Answer:

5 chickens

Step-by-step explanation:

Let's set chickens and pigs with variables "c" and "p" respectively.

We know there a 16 animals in all, so there are:

c+p=16

We know there are 54 legs and chickens have 2 legs and pigs have 4 legs each:

2c+4p=54

Now we have our system of equations:

c+p=16

2c+4p=54

We are trying to find the number of chickens, so we write the first equation in respect to c.

p=16-c

Substituting the first derived equation to equation two:

2c+64-4c=54

Simplifying:

64-2c=54

2c=10

c=5

So there are 5 chickens.

8 0

3 years ago

19) It will cost $12.50 per person to make dinner. Write an

-BARSIC- [3]

Answer:

12.50x less than or equal to $200

Step-by-step explanation:

7 0

3 years ago

HELPPPPPPPPPPPPPPPPPPPPP

77julia77 [94]

Answer:

ill guess -2 for u

Step-by-step explanation:

5 0

2 years ago

Round to the nearest ten thousandths 15.76548908 *

Gemiola [76]

Answer: 15.7659

Explanation: the column the 4 is in is the ten thousandths column. Since the number after it is 8, which is bigger than 5, you round up to make is 15.7659

6 0

2 years ago

Please help with the question above :)!!! ^^

zhannawk [14.2K]

(-1,-9) because if we substituted 1 into x y would be 9 and if we substituted 1/2 into x y would be 3 but if we substituted -1 into x y would be 1/9 so therefore that value is incorrect

7 0

3 years ago