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2 years ago

PLZ ANSWER WILL GIVE 25 POINTS AND WILL MARK BRAINLIEST!! PLEASE I NEED ASAP

Mathematics

1 answer:

Studentka2010 [4]2 years ago

6 0

Answer:

7 quarters and 3 dimes

Step-by-step explanation:

x: quarter y: dime

25x + 10y = 205

x+y=10

y = 10-x

25x + 10*(10-x) = 205

25x+100 -10x = 205

15x = 105

x = 7

7 = 10-7 = 3

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Please help and thank you

daser333 [38]

Your answer is C, 49

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2 years ago

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"Complete the square" to convert the equation of each circle to graphing form. Identify the center and the radius.

Reil [10]

Answer:

The center is (-3,2) and the radius is r=2

Step-by-step explanation:

The general equation of the given circle is

$x^2+6x+y^2-4y=-9$

Add the square of half the coefficient of the linear terms to both sides of the equation to obtain;

$x^2+6x+3^2+y^2-4y+(-2)^2=-9+3^2+(-2)^2$

$x^2+6x+9+y^2-4y+4=-9+9+4$

$x^2+6x+9+y^2-4y+4=4$

The quadratic trinomials in x and y on the left side of the equations are perfect squares.

We factor to obtain;

$(x+3)^2+(y-2)^2=4$

$(x--3)^2+(y-2)^2=2^2$

Comparing to:

$(x-h)^2+(y-k)^2=r^2$

The center is (-3,2) and the radius is r=2

8 0

2 years ago

Pls Help Choose the correct word to complete the statement: If BC intersects circle A only at point B, and mCBA = 90°, then CB i

cricket20 [7]

Line CB touches circle A only at one point (point B), hence CB is a tangent.

<h3>What is a circle?</h3>

A circle is the locus of a point such that its distance from a fixed point (center) is always constant.

When a line intersects a circle in exactly one point the line is said to be tangent to the circle

Hence since Line CB touches circle A only at one point (point B), hence CB is a tangent.

Find out more on circle at: brainly.com/question/24375372

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2 years ago

Witch one I need help

Ira Lisetskai [31]

Answer:

I believe the correct answer is A.

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3 years ago

I can't figure this out!

katovenus [111]

The line is 180 degrees in total so your equation would be-
X-6 + 8x + 24 = 180
9x + 18 = 180
9x = 162
Answer is: x = 18

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2 years ago

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