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bonufazy [111]
3 years ago
11

Write an equation of a circle with a center at (2, - 4) and a radius of 4.

Mathematics
1 answer:
fgiga [73]3 years ago
6 0

9514 1404 393

Answer:

  (x -2)^2 +(y +4)^2 = 16

Step-by-step explanation:

The equation of a circle with center (h, k) and radius r is ...

  (x -h)^2 +(y -k)^2 = r^2

You have (h, k) = (2, -4) and r = 4, so your equation is ...

  (x -2)^2 +(y -(-4))^2 = 4^2

  (x -2)^2 +(y +4)^2 = 16

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A grocery store sells long grain rice for 2.49 per pound. Write an expression for the cost of y pounds of long grain rice.
OleMash [197]

Answer:

Step-by-step explanation:

Cost = 2.49 * y

You really should spend the time. Math is used everywhere.

3 0
2 years ago
Water flows from a tank with a rectangular base measuring 80cm by 70cm into another tank with a squarebase of side 60cm. If the
defon

Answer:

70cm

Step-by-step explanation:

,

Since, both of the tank posses the same quantity of water then there volume is the same thing

For rectangular base

Volume= (Lenght × breadth × hheight)

If we substitute values

Lenght= 80 cm

Breadth= 70 cm

height= 45 cm

Volume= 80cm × 70cm × 45cm

Volume= 252000cm^3

For square base

Volume= (side)^2 × height

side =60cm.

But volume of square base= volume of

rectangular base

252000cm^3= 60^2 × height

Height= (252000cm^3)/(60^2 )

Height= 70 cm

Hence, the second tank is 70 cm deep

4 0
3 years ago
PLEASE HELP HELP !!!!!!!
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Answer: The answer is –3x+10=5x–8.

Step-by-step explanation:

5 0
3 years ago
Two times the sum of a number and 8 subtracted from the number equals 6. What is the number that makes this statement true?
Zanzabum

Answer:

7

Step-by-step explanation:

let the no. be 'x'

By question,

2x-8=6

or, 2x =6+8

or,2x = 14

or,x = 7

therefore, the no. is 7.

5 0
3 years ago
2•2•2•2•2•3•3•3•3 in exponential form.
pentagon [3]

Answer:

2^5 and 3^4

Step-by-step explanation:

you can see there are 5 2's and 4 3's. so it would be 2^5 and 3^4

8 0
4 years ago
Read 2 more answers
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