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3 years ago

How do you remove is the door knob from the surface area of your bedroom door

Mathematics

2 answers:

pogonyaev3 years ago

3 0

Answer:

by adding the circle of area below the doorknob and removing the surface area of the knob itself

Step-by-step explanation:

nataly862011 [7]3 years ago

3 0

Answer:

with a skrew driver

Step-by-step explanation:

remove the skrews with the skrew driver and the you should be able to pull it out

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Please help 100 points and brainlest for all the answers

masha68 [24]

Answer:

See explanation

Step-by-step explanation:

Q1. The graph of given data is attached.

The relationship is directly proportional as the line connecting all points is straight line passing through the origin.

For every 1 unit change in x, the change of y is 16.

Therefore, the equation that represents this line is

$y=16x$

If $x=10,$ then $y=16\cdot 10=160$ square feet.

Q2. Yes, the relationship shows the direct proportionality as the line connecting all points is straight line passing through the origin (see second attached graph).

For every 1 unit change in x, the change of y is 0.45.

Therefore, the equation of the line is

$y=0.45x$

Q3. Yes, the relationship shows the direct proportionality as the line connecting all points is straight line passing through the origin.

Find the constant of proportionality:

If x = 2, y = 25, then

when x = 1, y = 12.5

so k = 12.5

and the equation of the line is

$y=12.5x$

When $x=14,$ then $y=12.5\cdot 14=175$

Hence, the cost of 14 tickets is $175

Q4. This table does not show the direct variation because

if x = 500 and y = 40, then

for x = 100, y is $40\div 5=8$

and for x = 700, y must be $7\cdot 8=56$ not 50.

Hence, this relationship does not show the direct proportionality between x and y.

Q5. This elationship shows the direct proportionality as the line connecting all points is straight line passing through the origin.

The constant of proportionality is $k=1.75$

The equation of proportionality is $y=1.75x$

When $y=28,$ then

$28=1.75x\\ \\x=\dfrac{28}{1.75}\\ \\x=16$

This means for $28 you could buy 16 ice cream scoops.

Q6. The line passes through the point (2,61), so the constant of proportionality is

$k=\dfrac{61}{2}=30.5$

The equation of proportional relationship is

$y=30.5x$

When $y=274.50,$ then

$274.50=30.5x\\ \\x=\dfrac{274.5}{30.5}\\ \\x=9$

This means you could buy 9 tickets for $274.50

Q7. The equation which represent proportional relationship should have the equation of the form

$y=kx$

Circle all equations in this form:

$y=5x\\ \\p=0.5m\\ \\y=\dfrac{1}{2}x\\ \\M=3n\\ \\y=2x$

Q8. A relationship between two variables in which one is a constant multiple of the other. In particular, when one variable changes the other changes in proportion to the first. If y is directly proportional to x, the equation is of the form y = kx (where k is a constant).

This means that the graph of direct variation is always a straight line passing through the origin (because x = 0 and y = 0 satisfy the equation for all k).

Not all lines represent the proportional relationship. Only those, which pass through the origin.

4 0

3 years ago

Read 2 more answers

4x + 5 = 25 what is x?

Novay_Z [31]

4x + 5 = 25
-5 -5
4x = 20 (divide 4 from each side)

x = 5

5 0

3 years ago

Read 2 more answers

The low temperature for 5 days was -5, -7, -2, 2, -3 degrees. What was the average low temperature for those days?

Greeley [361]

The average would be -3. You add all the low temps up and get -15 then you divide it by the amount which was 5 temps... And get -3.

5 0

3 years ago

Solve.<br><br> 3x + 2y = 7 and<br><br> 4x – 3y = -2

lapo4ka [179]

just look up math papa algebra calculator it gives you the answer and explains it step by step :)

4 0

3 years ago

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the brightness of the illumination of an object varies inversely as the square of the distance from the object to the source of

Free_Kalibri [48]

I=k/d^2

4=k/d^2 and 1=k/64 so if we divide the first by the second we get:

4/1=(k/d^2)/(k/64)

4=(k/d^2)*(64/k)

4=64/d^2

d^2=64/4

d^2=16

d=4 meters

3 0

3 years ago