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3 years ago

I need help please ??????????

Mathematics

1 answer:

Andreyy893 years ago

3 0

Answer:

Step-by-step explanation:

as long as the 50 i did this in 5th grade

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Write the equation of the circle centered at (3, 5) and tangent to x = -1. I need help pleasse

Annette [7]

Answer:

(x - 3)² + (y - 5)² = 16

Step-by-step explanation:

the equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k ) are the coordinates of the centre and r the radius

given (h, k ) = (3, 5 ) we require to find r

r is the distance from the centre to a point on the circle

given x = - 1 is a tangent the r is the distance between the x- coordinates

r = | 3 - (- 1) | = | 3 + 1 | = | 4 | = 4

then equation of circle is

(x - 3)² + (y - 5)² = 4² , that is

(x - 3)² + (y - 5)² = 16

7 0

2 years ago

Please help 6th grade math please please help

sweet-ann [11.9K]

Step-by-step explanation:

the beginning number is the beginning of your range the last number is the end of your range

4 0

3 years ago

Given that y is directly proportional to x^2 and that y=2 when x=3 find the value of y when x=6

Sergio039 [100]

Answer:y=4/3

y is directly proportional to x^2 is written as

$y \alpha {x}^{2}$ introducing a constant,

y=kx^2

but from the question, when y=2 , x=3 . putting it in the formula to get the value of k

$2 = {3}^{2} \times k$

2=9k . dividing through by 9 to get the value of k

 $\frac{2}{9} = \frac{9k}{9}$ 

 $k = \frac{2}{9}$ 

putting it in the general expression

 $y = \frac{2}{9} x$ 

the value of y when x=6

 $y = \frac{2}{9} \times 6$ 

 $y = \frac{4}{3}$ 

therefore the value of y when x=6 is

4/3

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3 years ago

If 3x + 4y = 5, and x - y = 1, then what is y and x?

11Alexandr11 [23.1K]

I hope this helps you 4×[x-y=1] 4x-4y=4 3x+4y+4x-4y=5+4 7x=9 x=9/7 9/7-y=1 y=9/7-1 y=2/7

7 0

3 years ago

joe has $200. he gives 1/10 of it to flo. he gives 4/10 of it to zoe. he keeps the rest. how much does each person get

andrey2020 [161]

1/10 of 200 is 20 ( $\frac{1*200}{10} =20$ ), flo gets 20

4/10 of 200 is 80 ( $\frac{4*200}{10} = \frac{800}{10}=80$ ), Zoe gets 80.

And he gets the rest: 200 - 20 -80 =100: so he gets 100.

7 0

3 years ago