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2 years ago

What's the radius of a circle with area 9π units2?

Mathematics

1 answer:

storchak [24]2 years ago

3 0

Answer:

option C : 3 units

Step-by-step explanation:

radius of circle is 3 units

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Are the graphs of the lines in the pair parallel? Explain. Find the slope of a line parallel to 5x+2y=6

Sonja [21]

Answer:

Yes the graphs of the lines are in pair parallel.

Step-by-step explanation:

They are in pair parallel because they do not touch each other. To find the slope of the line that is parallel to 5x+2y=6...

The first thing to do is subtract 5x since its a positive so it would look like this:

5x+2y=6

-5x =-5x

Next you would divide by 2 on each side so the y can be isolated:

5x+2y=6

-5x =-5x

2y = -5x + 6

2 2

Lastly the 2 divided by 2 gets crossed out because they cancel each other out and divide -5x by 2 and 6 by 2 then you would be stuck with this:

y= -2.5x+3

So your parallel slope would be -2.5x.

8 0

2 years ago

The volume of a cuboid is 2160cm3. The length is 12cm and the width is 150mm. Work out the height of the cuboid in cm.

White raven [17]

Answer:

12 cm

Step-by-step explanation:

12x15 (150)

2160/180

= 12 cm

8 0

2 years ago

Find the equation of a line that contains the points (3,7) and (-6, 4). Write the equation in slope-intercept form, using

NikAS [45]

Answer:

$y=\frac{1}{3} x+6$

Step-by-step explanation:

$(3,7)(-6,4)$

Step 1. Find the slope (by using the slope-formula)

m = slope

$m=\frac{y_2-y_1}{x_2-x_1}$

$m=\frac{4-7}{-6-3}$

$m=\frac{-3}{-9}$

$m=\frac{3}{9}$

$m=\frac{1}{3}$

Step 2. Write the equation (using the slope and the points)

Here's how to do it:

Slope-intercept Formula $y=mx+b$ whrere m = slope and b = y-intercept

Plug in the slope into the Slope-intercept Formula

$y=\frac{1}{3} x+b$

Find the y-intercept (b) by using a point and substituting their x and y values

$y=\frac{1}{3} x+b$

Point: (3, 7)

$7=\frac{1}{3} (3)+b$

$7=1+b$

$b=7-1$

$b=6$

Step 3. Write the equation in Slope-intercept form

$y=mx+b$

$y=\frac{1}{3} x+6$

3 0

2 years ago

Estimate 63,266 -42,657 by first rounding each number to the nearest thousand.

zmey [24]

Answer:

106,000

Step-by-step explanation:

3 0

2 years ago

PLEASE HELP Write the number in standard form. (8 × 10) + (1 × 110) + (6 × 11,000)

mote1985 [20]

66,190 is the Answer if you add 80 to 110 and then add 190 to 66000

7 0

3 years ago