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3 years ago

Which one is false ????

Mathematics

1 answer:

fenix001 [56]3 years ago

4 0

Answer:

Step-by-step explanation:

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Peter bought 90 boards for $270.

Vesnalui [34]

The algebraic expression would be
n=$270/90
the value of n to the expression is equal to 3 meaning that 20 boards would cost $60

8 0

2 years ago

Situation #4

Sergeeva-Olga [200]

Answer:

check on photomath you will find all the answers

6 0

3 years ago

428 is greater to or less or equal to 3 hundred 12 tens 8 ones

VLD [36.1K]

Answer:

428 is equal to 428

Step-by-step explanation:

300 + 120 = 420 + 8 = 428

6 0

3 years ago

Write the equation of circle b with center B(-2,3) that passes through (1,2)

professor190 [17]

Answer:

$(x+2)^2 + (y-3)^2 = 10$

Step-by-step explanation:

The standard equation for circle is

$(x-a)^2 + (y-b)^2 = r^2$

where point (a,b) is coordinate of center of circle and r is the radius.

______________________________________________________

Given

center of circle =((-2,3)

let r be the radius of circle

Plugging in this value of center in standard equation for circle given above we have

$(x-a)^2 + (y-b)^2 = r^2 \ substitute (a,b) \ with (-2,3) \\=>(x-(-2))^2 + (y-3)^2 = r^2 \\=>(x+2)^2 + (y-3)^2 = r^2 (1)$

Given that point (1,2 ) passes through circle. Hence this point will satisfy the above equation of circle.

Plugging in the point (1,2 ) in equation 1 we have

$\\=>(x+2)^2 + (y-3)^2 = r^2 \\=> (1+2)^2 + (2-3)^2 = r^2\\=> 3^2 + (-1)^2 = r^2\\=> 9 + 1 = r^2\\=> 10 = r^2\\=> r^2 = 10\\$

now we have value of r^2 = 10, substituting this in equation 1 we have

Thus complete equation of circle is $=>(x+2)^2 + (y-3)^2 = r^2\\=>(x+2)^2 + (y-3)^2 = 10$

7 0

3 years ago

John is a runner what is the speed if you Ran<br> hundred metter sprint in 10 seconds

Ahat [919]

Answer:

1000

Step-by-step explanation:

3 0

3 years ago