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2 years ago

Write the equation of the line passing through the point (4, -9) with a slope of -2/3. Write the equation

Mathematics

1 answer:

iVinArrow [24]2 years ago

8 0

2 x -4 2m + 5m a + b + c

<h3>(expresion) </h3>

4n + 7 = 11 b - 2 = 3 x + y + z = 187

twice a number increased by four is 10 the difference of a number and 2 is 5

<h3>(equation)</h3>

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Q. How many zeros does this parabola have?

AlekseyPX

Answer:

Step-by-step explanation:

The zeros are the points on the x- axis where the graph crosses

In this case there are 2 points where the graph crosses the x- axis

These are the zeros , that is 2 zeros

4 0

4 years ago

Write the equation for each line: red, gray, purple, and blue.

Luba_88 [7]

red: y = -2x + 3

gray: y = 3x -2

purple: x = 5

blue y = -4

hope this helped <3

7 0

3 years ago

Harry has a floor 8 metres long by 6 metres wide.He tiled the entire floor with square tiles of side 25 cm . How many tiles woul

mote1985 [20]

Answer:

768 tiles would be required to tile the floor.

Step-by-step explanation:

Let's first calculate the number of square meters that the rectangular floor represents, by using the formula for the area of a rectangle (length x width):

Floor area = 8 m x 6 m = 48 $m^2$

Next, let's convert the side of the square tiles into meters in order to keep the same units in both (floor area an tile area):

25 cm = 0.25 m

Then the are of a square tile can be obtained by the formula 0.25 m x 0.25 m = 0.0625 $m^2$

Now to find the number of tiles needed, we perform the division of the total floor area to be covered divided by the area covered by a single tile:

Number of tiles needed: 48 $m^2$ / 0.0625 $m^2$ = 768 tiles

4 0

4 years ago

Is 2.67034165508… rational or unrational?

notka56 [123]

Answer- Rational because is a repeating decimal

6 0

2 years ago

Read 2 more answers

Sandra calculated the height of a cylinder that has a volume of 576 pi cubic centimeters and a radius of 8 centimeters. Her work

r-ruslan [8.4K]

Answer:

The error was made in step 4, $\pi$ should have also been cancelled making the correct answer as 9 cm.

Step-by-step explanation:

Given that:

Volume of cylinder, $V = 576 \pi\ cm^3$

Radius of cylinder, r = 8 cm

To find:

The error in calculating the height of cylinder by Sandra ?

Solution:

We know that volume of a cylinder is given as:

$V = B h$

Where B is the area of circular base and

h is the height of cylinder.

Area of a circle is given as, $B = \pi r^2$

Let us put it in the formula of volume:

$V = \pi r^2 h$

Step 1:

Putting the values of V and r:

$576\pi = \pi 8^2 h$

So, it is correct.

Step 2:

Solving square of 8:

$576\pi = \pi \times 64\times h$

So, step 2 is also correct.

Step 3:

$h=\dfrac{576\pi}{64 \pi} = \dfrac{64 \pi \times 9}{64\pi}$

Step 4:

Cancelling 64 $\times \pi$ ,

h = 9 cm

So, the error was made in step 4, $\pi$ should have also been cancelled making the correct answer as 9 cm.

3 0

3 years ago