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3 years ago

The graph for the equation y=x-4 is shown below.

Mathematics

2 answers:

MAVERICK [17]3 years ago

8 0

Answer: The correct answer is c.

Step-by-step explanation:

I just answered the question for school

choli [55]3 years ago

6 0

Answer:

A. y - x = -4

Step-by-step explanation:

y=x-4

To get infinite equations, the equation must be equal to y=x-4

We will solve each of these for y to see if they are identical

A. y - x = -4

Add x to each side

y-x+x = x-4

y = x-4

This is the same

It will give infinite solutions

B. y - x = -2

y-x+x = x-2

y =x-2

This is not the same.

It is parallel and will give no solutions

C. y - 4 = x

y-4+4 = x+4

y = x+4

This is parallel and will give no solutions

D. y + 4x = 1

y +4x-4x = -4x+1

This will intersect at a point

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100 POINTS!!!!!

Oksanka [162]

Answer:

a. Ratio of their circumference = 2:3

b. The ratio of their surface areas = 2:3

c. The ratio of their volume = 4:9

Step-by-step explanation:

Let the cylinders be labelled as A and B respectively.

Diameter of cylinder A = 6 in,

its radius = $\frac{diameter}{2}$

= $\frac{6}{2}$ = 3 in

Diameter of cylinder B = 9 in,

its radius = $\frac{diameter}{2}$

= $\frac{9}{2}$ = 4.5 in

Thus,

a. circumference of a circle = 2 $\pi$ r

Circumference of cylinder A = 2 $\pi$ r

= 2 x $\pi$ x 3

= 6 $\pi$ in

Circumference of cylinder B = 2 $\pi$ r

= 2 x $\pi$ x 4.5

= 9 $\pi$

Ratio of their circumference = $\frac{circumference of cylinder A}{circumference of cylinder B}$

= $\frac{6\pi }{9\pi }$

= 2:3

b. The surface area of a cylinder = 2 $\pi$ rh

the surface area of cylinder A = 2 $\pi$ rh

= 6 $\pi$ h

the surface area of cylinder B = 2 $\pi$ rh

= 9 $\pi$ h

The ratio of their surface areas = $\frac{surface area of cylinder A}{surface area of cylinder B}$

= $\frac{6\pi h}{9\pi h}$

= 2:3

c. Volume of a cylinder = $\pi$ $r^{2}$ h

volume of cylinder A = $\pi$ $r^{2}$ h

= $\pi$ x $3^{2}$ x h

= 9 $\pi$ h

volume of cylinder b = $\pi$ $r^{2}$ h

= $\pi$ x $4.5^{2}$ x h

= 20.25 $\pi$ h

The ratio of their volume = $\frac{volume of cylinder A}{volume of cylinder B}$

= $\frac{9\pi h}{20.25\pi h}$

= 4:9

6 0

3 years ago

Help I don't understand!!

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3 years ago

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3 years ago

Given: X= 0.234523452345..... Is X rational or irrational? a If X is rational, rewrite it in a fraction.

Evgesh-ka [11]

Answer:

0.234523452345 as a fraction equals 234523452345/1000000000000

Step-by-step explanation:

To write 0.234523452345 as a fraction you have to write 0.234523452345 as numerator and put 1 as the denominator. Now you multiply numerator and denominator by 10 as long as you get in numerator the whole number.

0.234523452345 = 0.234523452345/1 = 2.34523452345/10 = 23.4523452345/100 = 234.523452345/1000 = 2345.23452345/10000 = 23452.3452345/100000 = 234523.452345/1000000 = 2345234.52345/10000000 = 23452345.2345/100000000 = 234523452.345/1000000000 = 2345234523.45/10000000000 = 23452345234.5/100000000000 = 234523452345/1000000000000

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3 years ago

In the diagram below of triangle NOPNOP, QQ is the midpoint of \overline{NP}

xxTIMURxx [149]

Answer:

126 degrees

Step-by-step explanation:

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