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prohojiy [21]
3 years ago
5

PLEASE HELP!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Gala2k [10]3 years ago
4 0

Answer:

C.

Step-by-step explanation: the domain is all even integers from 0 to 6 hours

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How do I substitute this?
Lemur [1.5K]

You want to isolate one of the variables (x or y) so you can plug it into the other equation. The easiest one is isolating the 2nd equation.

3x² - 16x + 13 - y = 0   Add y on both sides

3x² - 16x + 13 = y

You can use this and plug it into the first equation

y - 12x + 15 = 3x²

(3x² - 16x + 13) - 12x + 15 = 3x²

3x² - 16x + 13 - 12x + 15 = 3x²  Combine like terms

3x² - 28x + 28 = 3x²  Subtract 3x² on both sides

-28x + 28 = 0  Add 28x on both sides

28 = 28x Divide 28 on both sides

1 = x

Now that you know x, you can plug it into either of the equation to find y

3(1)² - 16(1) + 13 - y = 0

3 - 16 + 13 - y = 0

-y = 0 Divide -1 on both sides

y = 0


x = 1, y = 0

7 0
3 years ago
Does anyone know the answer??
statuscvo [17]

Answer:

b = 60

Step-by-step explanation:

Using Pythagoras' identity in the right triangle

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

b² + 63² = 87²

b² + 3969 = 7569 ( subtract 3969 from both sides )

b² = 3600 ( take the square root of both sides )

b = \sqrt{3600} = 60

8 0
2 years ago
PLEASE ANSWER ASAP !!!!
Alekssandra [29.7K]

Answer: Its C

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
A truck is carrying 3 tons of cement and 150 pounds of bricks. How many pounds does the truck's load weigh in total?
wariber [46]
6150 not sure but if im wrong im so sorry
5 0
3 years ago
Read 2 more answers
100 points, PLEASE HELP MEEE
masha68 [24]

Answer:

b = 3a

Step-by-step explanation:

a = < - 1, 3 >

b = < - 3, 9 >

Thus

b = 3a

7 0
1 year ago
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