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3 years ago

Can someone help me out

Mathematics

2 answers:

earnstyle [38]3 years ago

6 0

Answer:

π×64×4=804.25

Step-by-step explanation:

Formula of cylinder is π×square of radius×height

Butoxors [25]3 years ago

4 0

Answer:

803.8

Step-by-step explanation:

it's 3.14×8×8×4 which would give you 803.84 and then you round which would give you 803.8

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The number in the blanks represents

dybincka [34]

If a number x is divided by another number m and gives the answer q without any reminder, then q is called the quotient.

Hence, the number here in blank represents the quotient.

3 0

3 years ago

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Solve the system of equations by elimination and identify which could be a first step of the elimination method for the system.

Alecsey [184]

3x+2y=24
Times 2
6x+4y=48
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6x+2y=30
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2y=18
y=9
x=2. Hope it help!

4 0

4 years ago

The lines y=3x-1 and y=ax+2 are perpendicular if a=___

mezya [45]

Answer:

$a = \frac{-1}{3}.$

Step-by-step explanation:

The equation of line in the form .

y = mx + c

Where m is the slope and c is the y- intercept .

As given

The lines y=3x-1 and y=ax+2 are perpendicular .

Here 3 is slope for equation of line y=3x-1 and a is slope for equation of line

y=ax+2 .

Now by using properties of the perpendicular lines property .

When two lines are perpendicular than slope of one line is negative reciprocal of the other line .

Thus

$a = \frac{-1}{3}$

Therefore $a = \frac{-1}{3}.$

8 0

3 years ago

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Find the slope of (12,-18),(11,12)

bixtya [17]

Do (x1-y1) then (x2-y2) so ( 12- negative 18= -30) then ( 11-12= -1) so -30/1 which equals 30 so i think that’s the slope aka 30

4 0

3 years ago

What is the y coordinate of the center of the circle for the following equation? X squared plus y squared minus 10y plus 18x = 2

katrin2010 [14]

Answer:

Center of the circle is (-9, -7)

Radius of the circle = 5 units

Given question is incomplete: here is the complete question.

Certain circle can be represented by the following equation. x^2+y^2+18x+14y+105=0.

What is the center of this circle ?

What is the radius of this circle ?

Since equation of the circle has been given by the equation,

x² + y² + 18x + 14y + 105 = 0

Now we will convert this equation to the standard form of the circle.

x² + 18x + y² + 14y = -105

[x² + 2(9)x] + [y² + 2(7)x] = -105

[x² + 2(9)x + 9²] + [y² + 2(7)y + 7²] = 9² + 7² - 105

(x + 9)² + (y + 7)² = 81 + 49 - 105

(x + 9)² + (y + 7)² = 25

(x + 9)² + (y + 7)² = 5²

By comparing this equation with the standard equation of the circle → (x - h)² + (y - k)² = r²

Center of the circle is (-9, -7) and radius of the circle is 5 units.

5 0

4 years ago