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Leno4ka [110]
3 years ago
8

Verify whether the point (2,5) lies on 2x -y+1=0 or not

Mathematics
1 answer:
Ksenya-84 [330]3 years ago
3 0

Answer:

yes verified

Step-by-step explanation:

2x-y+1=0

substitute

2(2)-5+1=(0?)

4-5+1=0

yes

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In 2012, the population of Cincinnati, Ohio, was 296,550 with a population density of approximately 3800 people per square mile.
Airida [17]

Answer:

≈ 78mi^2

Step-by-step explanation:

To find approximate land area:

296,550/3,800 = 78.039

Round to nearest whole number:

Area = 78

8 0
3 years ago
What is the slope of the line that is perpendicular to the line whose equation is 2x+y=4??
zmey [24]

Answer:

The slope would be 1/2

Step-by-step explanation:

y= mx +b

m= slope

perpendicular lines have slopes that are multiplied in order to get -1

<em>these are important</em>

<em></em>

2x + y = 4

<u><em>subtract 2x</em></u>

y=-2x +4

your slope is -2

-2 * ? = -1

? = -1/-2

? = 1/2

6 0
3 years ago
Please answer with explanation
Ipatiy [6.2K]

<u>Answer:</u>

a direct variation is a relation that is of the form <u>y = mx</u>

  • example of a direct variation: y = 2x

a partial variation is is a relation that is of the form <u>y = mx+b</u>

  • example of a partial variation: y = 2x + 1

  • a non-linear function doesn't have a constant rate of change
  • the graph for a non-linear relationship is curved
  • a non-linear curve may show a positive or a negative relationship
5 0
3 years ago
Idek why brainly deleted my last one but-<br><br><br>solve for x<br><br>2/3x - 4 1/2 = -8
BaLLatris [955]

Answer:

The answer is x= -5 1/4

Step-by-step explanation:

Let's solve your equation step-by-step.

2/3x−4 1/2=−8

Step 1: Simplify both sides of the equation.

2/3x+−9/2=−8

Step 2: Add 9/2 to both sides.

2/3x+−9/2+9/2=−8+9/2

2/3x=−7/2

Step 3: Multiply both sides by 3/2.

(3/2)*(2/3x)=(3/2)*(−7/2)

x=−21/4

Answer:

x= −5 1/4

3 0
3 years ago
Factor completely. a^2 + 28a + 27
Tpy6a [65]
For factorisation it is necessary that you multiply the last and first values
Here we can see : we require 27a^2
SO if we multiply the answer should be 27 and if we add the answer should be 28 ....here goes !!

a^2 + 28a + 27

a^2 + 27a + 1a + 27

Here we can see : I we multiply 27 and 1 the answer will be 27a^2 but if we add 27 and 1 as shown then answer will be 28a:

a ( a + 27 ) + 1 ( a + 27 )

( a + 1 ) × (a + 27 )

HOPE IT HELPED!!
6 0
3 years ago
Read 2 more answers
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