3 years ago

What is the standard form of a circle

1 answer:

6 0

Escribir la ecuación estándar de un círculo. Dado un círculo en el plano coordenado, Sal encuentra su ecuación estándar, que es una ecuación de la forma (x-a)²+(y-b)²=r².

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Jeremy went school supply shopping and bought a calculator, pencils, markers, and notebooks for $17.50.

faltersainse [42]

Answer:

$14

Step-by-step explanation:

x/17.5=20/100, do the butterfly method

17.5x20=350

350/100= 3.5

17.5-3.5=14

8 0

2 years ago

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x squared plus y squared equals 80. My daughter has to work out what x and y are. I have worked it out by trial and error, but k

olya-2409 [2.1K]

you Need to think of 2 square numbers that add up to make 80

answer:

64 + 16

this means that x = 8 and y = 4

because of the square roots

y = 4

and

x = 8

7 0

3 years ago

Donnel practiced the piano 3 hours longer than Marcus. Together they practiced the piano for 11 hours. How many hours did each b

andriy [413]

Here is the equation: $x+(x+3)=11$ ⇒ $x+x+3=11$

You need to get "x" by itself so minus 3 from each side

$x+x+3-3=11-3$ ⇒ $x+x=8$ ⇒ $2x=8$

Divide 8 by 2

$8$ ÷ $2=4$

x=4

So each 4 is equivalent to 4

Lets check:

$4+(4+3)=11$ ⇒ $4+4+3=11$ ⇒ $11=11$

So that means that Marcus practiced the piano for 4 hours and Donnel practiced for 7

4 0

3 years ago

2. Stuff Mart sells ice cream toppings in two

mixas84 [53]

Each of the toppings cost 2$

3 0

2 years ago

An observer on the ground is x meters from the base of the launch pad of a rocket, which is at the same level as the observer. A

Firlakuza [10]

This can be solved using trigonometric functions. The distance x serves as one leg of a triangle, and makes an angle q with the hypotenuse. The distance from the tip of the rocket to the ground make up the other leg of the triangle. So solving this:

tan q = y / x

Where: y = distance from the tip of the rocket to the ground

Therefore, y = x tan q

Among the choices, the correct answer is C.

5 0

2 years ago

Read 2 more answers