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sweet [91]
3 years ago
12

A circle has its centre at the origin and has a radius of 5.What is its equation?​

Mathematics
1 answer:
Step2247 [10]3 years ago
6 0
Formula is (x-h)2+(y-k)2=r2
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What is the answer meyn?
Alexandra [31]

Answer:

the best value is two 50 ml bottles

Step-by-step explanation:

Okay focus with me , if you buy a bottle of 50 ml you will get a second for half price so we can say that --> 2 bottles of 50 ml =

45 +  \frac{45}{2}  = 67.5

We get 100 ml with £67.5 just , but when you buy 80ml you must pay £55 Hum !

then you can dived the volume of bottle with price ...

  • the price of one ml is 0.675 in first State

\frac{67.5}{100 } = 0.675

  • in the second state the price of one ml is

\frac{55}{80}  = 0.6875

then :

0.675 < 0.6875

so the best value is two 50 ml bottles

4 0
3 years ago
Which expression is equivalent to 27 +4 •16
Pavel [41]

Answer:

27+64

Step-by-step explanation:

lmk if you need an explanation

6 0
3 years ago
Y = 2x <br> x + y = −6<br> the answer should be like this (x,y) or ( , )
melisa1 [442]

Answer:

(-2, -4)

Step-by-step explanation:

Given:

The system of equations to solve is given as:

y=2x\\\\x+y=-6

In order to solve this system of linear equations, we use substitution method.

In substitution method, we substitute the value of any one variable in the other equation.

So, we substitute the value of 'y' from first equation in the second equation.

This gives,

x+2x=-6\\\\3x=-6

Dividing both sides by 3, we get:

\frac{3x}{3}=\frac{-6}{3}\\\\x=-2

Now, y=2x=2\times -2=-4

Therefore, the solution is (-2, -4)

6 0
3 years ago
Please Help! Quickly image below with question
GrogVix [38]

Answer:

12742π Km

Step-by-step explanation:

The length of the rope is the circumference of the circle, that is

C = 2πr ( r is the radius ) Here r = 6371

C = 2π × 6371 = 12742π Km

4 0
3 years ago
Find the percent decrease.Round to the nearest percent. From 97 to 75
damaskus [11]

Answer:

Step-by-step explanation:

Decrease = 97 - 75 = 22

Percentage of decrease=

=\frac{22}{97}*100

= 22.68

= 23%

4 0
3 years ago
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