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3 years ago

What is the circles equation?

Mathematics

1 answer:

kolbaska11 [484]3 years ago

3 0

Answer:

A. x²+y² = 9

Step-by-step explanation:

r = 3

So, r² = 9

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What is partial product of 429<br> X 35?

klio [65]

Answer:

15,015

Step-by-step explanation:

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4 years ago

If you score 30 points in 5 games, how many points do you score per game?

Yuki888 [10]

Answer:

You scored 6 points per game

Step-by-step explanation:

30÷5=6

8 0

3 years ago

How do i solve 4x - 2y = 22 and 2x + 4y = 6 using substitution and elimination?

Fiesta28 [93]

substitution and elimination means that you need to use one equation and substitute it in place of some variable in the other equation.

Consider the above two equations.

Take equation 1, which is 4x-2y=22 => x=(22+2y)/4

substitute the x value gained above in equation 2.

so, 2((22+2y)/4)+4y=6

22+2y+8y=12 => 10y = -10 => y= -1.

Substitute y= -1 in x value obtained in the beginning.

So, x= (22 - 2)/4 => 5.

There fore, x= 5 and y= -1

Hope it helps.

5 0

3 years ago

Mary went on vacation from the uk to the us, so she had to purchase some dollars ($). how many pounds sterling (l) did she excha

kap26 [50]

Exchange rate L 1 = $ 1.5542

Mary has $ 135

Pounds that Mary exchanged 135/1.5542

= L 86.8614 = L 87

4 0

3 years ago

se necesita llenar un galon de agua,en 2 litros se tarda 30 minutos.cuantos litros me hacen falta para completar el galon y cual

mariarad [96]

Answer: 1.78 L are needed to complete the gallon and it will take 29.66 min to completely fill it

Step-by-step explanation:

The question in english is:

A gallon of water needs to be filled, in 2 liters it takes 30 minutes. How many liters do I need to complete the gallon and what is the time it takes me to fill it?

We know 1 gallon is equal to 3.78 liters:

$1 gal=3.78 L$

In addition, we are told you have filled the gallon with $2 L$ at a rate of $\frac{2 L}{30 min}=0.06 L/min$ .

So, if we want to know how many liters are left to completely fill the gallon, we have to sbstract the $2 L$ to the total amount of a gallon:

$3.78 L-2 L=1.78 L$ This is the amount you need to complete the gallon

On the other hand, the rate is defined as:

$rate=\frac{Liters}{time}$

Isolating $time$ :

$time=\frac{Liters}{rate}$

Then, if we input the $1.78 L$ we need to fill the gallon we will have the time:

$time=\frac{1.78 L}{0.06 L/min}$

$time=29.66 min$ This is the time you need to fill the gallon

6 0

4 years ago