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Valentin [98]
2 years ago
12

Please help with this ​

Mathematics
2 answers:
Nataly_w [17]2 years ago
5 0

Answer: what grade is this for

Step-by-step explanation: YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET YEET

NARA [144]2 years ago
5 0

Answer:

B=7

C=9

D=6

E=1 and 1/8

F=42

G=45

H=54

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lara31 [8.8K]

Answer:

(x + 1)² + (y + 1)² = (√6)²

Step-by-step explanation:

Group the x- and y- terms together:

9x^2 + 18x + 9y^2 + 9y = 36

Factor out the coefficient 9:

x^2 + 2x + y^2 + y = 4

Complete the square of x^2 + 2x and then do the same for y^2 + 2y:

x^2 + 2x + 1 - 1 + y^2 + 2y + 1 - 1 = 4

Rewrite x^2 + 2x + 1 as the square of the binomial x + 1:

(x + 1)^2 + (y + 1)^2 - 2 = 4

Collect the constant terms on the right side:

(x + 1)^2 + (y + 1)^2 = 6

Rewrite 6 as (√6)^2:

(x + 1)² + (y + 1)² = (√6)² is the equation in standard form (x - h)² + (y - k)² = r²

Completing the square is done as follows:  x^2 + 2x

Start with x^2 + 2x

1.  Take half of the coefficient of x, which results in 2/2, or 1

2.  Square this result and add it to, and subtract it from x^2 + 2x

     x^2 + 2x + 1 - 1

3.  Rewrite the first three terms as the square of a binomial:  

     x^2 + 2x + 1 - 1 = (x + 1)² - 1.

Do the same for y² + 2y.

7 0
3 years ago
Find the volume of a cone with a diameter of 5.5 km
vagabundo [1.1K]

Answer:

volume =  \frac{1}{3} \pi {r}^{2} h \\  =  \frac{1}{3}  \times  \frac{22}{7}  \times  {( \frac{5.5}{2}) }^{2}  \times 11.2 \\  = 88.7 \:  {km}^{3}

4 0
3 years ago
Plz help gotta finish before 11:59:((((
olasank [31]

Answer:

19/42

Step-by-step explanation:

multiply each fraction by the opposite denominator to get the same denominator for both 12+7=19 &6×7=42

8 0
3 years ago
IN A CLASS OF 30 STUDENTS 13 OF THEM ARE BOYS WHAT PERCENTAGE ARE GIRLS?
mestny [16]
Class of students - number of students that are boys = numbers of students that are girls

30 - 13 = 17

To change the number of students that are girls into percentage...

17/1 * 1/100 = 17/100

17/100 in a % form = 17%

The percentage of girls in the class is 17%

5 0
3 years ago
What is the difference between 0.05, 0.5, and 0.50​
AfilCa [17]

Answer:5/100, 5/10, 50/100

Step-by-step explanation:

5 0
3 years ago
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