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2 years ago

PLEASE HELPPPPPPPPPPPPPPPPPPP

Mathematics

1 answer:

Bingel [31]2 years ago

3 0

Two on the right! :)

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Find the center and radius of the circle with the equation. Please show work!

mina [271]

Answer:

Step-by-step explanation:

The equation of a circle:

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

(h, k) - center

r - radius

We have:

$x^2-2x+y^2+4y=4\qquad\text{add}\ 1^2\ \text{and}\ 2^2\ \text{to both sides}\\\\x^2-2x+1^2+y^2-2(-2)(y)+2^2=2(1^2)(2^2)\qquad\text{use}\ (a\pm b)^2=a^2\pm2ab+b^2\\\\(x-1)^2+(y-(-2))^2=8\\\\h=1,\ k=-2\to(1,\ -2)$

3 0

2 years ago

Please help me points and brainliest

mrs_skeptik [129]

Answer:

1/2

Step-by-step explanation:

slope = $\frac{rise}{run}$ = $\frac{2}{4}$ = $\frac{1}{2}$

$\frac{2}{4}$ = $\frac{3}{6}$ Same ratio. Both reduce to $\frac{1}{2}$

5 0

3 years ago

the big wheel could have a 52 inch diameter and the small wheel could have an 18 inch diameter.What is the circumference of the

BlackZzzverrR [31]

Before we begin, let's cross out "the small wheel could have an 18 inch diameter". This is useless information and should be disregarded to avoid confusion. Lots of questions include extraneous information to make you second guess yourself, so it is important to be aware of what the question is asking you and what you need in order to answer it.

The formula for circumference is $\pi$ x diameter. With this formula, we can substitute the value of the diameter, 52, into the equation.

Circumference = 3.14 x 52
Circumference = 163.28

Final Answer: the circumference of the big wheel is 163.28 inches
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8 0

3 years ago

PLEASE I WILL GIVE BRAINLIEST!

Darya [45]

Answer:

7 + x + 4y

(7 + x) + 4y

x + (7 + 4y)

Step-by-step explanation:

the sum of elements does not change, no matter the order.

4 0

3 years ago

What expression is equivalent to 10(2p+q)

boyakko [2]

There aren't any answer options so I will just simplify the expression:
10(2p+q)
20p+10q

7 0

3 years ago