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3 years ago

4 • (2)3 equals???????

Mathematics

1 answer:

Sedbober [7]3 years ago

4 0

Answer:

Step-by-step explanation:

4*6=24

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1/5 - 2/15 ×1/5 - 2/15

ValentinkaMS [17]

Answer:

1 /25.

Step-by-step explanation:

Using order of operations, we perform the multiplication first:

1/5 - 2/15 × 1/5 - 2/15

= 1/5 - 2/75 - 2/15 LCD of 5, 15 and 75 is 75 so we have:

15/75 - 2/75 - 10/75

= 13/75 - 10/75 = 3/75

= 1 /25 (answer).

4 0

3 years ago

determine an equation and the radius for the circle that has its centre at the origin (0,0) passes through the point A 4-3

g100num [7]

Given:

The center of the circle is at (0,0).

The circle passes through the point A(4,-3).

To find:

The radius and the equation of the circle.

Solution:

Distance formula:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

The radius of the circle is the distance between the points (0,0) and (4,-3).

$r=\sqrt{(4-0)^2+(-3-0)^2}$

$r=\sqrt{(4)^2+(-3)^2}$

$r=\sqrt{16+9}$

$r=\sqrt{25}$

$r=5$

So, the radius of the circle is 5 units.

The standard form of a circle is

$(x-h)^2+(y-k)^2=r^2$

Where, (h,k) is center of circle and r is the radius.

Putting h=0, k=0, r=5, we get

$(x-0)^2+(y-0)^2=5^2$

$x^2+y^2=25$

Therefore, the radius of the circle is 5 units and the equation of the circle is $x^2+y^2=25$ .

6 0

3 years ago

How to solve x÷15=11

stepan [7]

Answer:

x=165

Step-by-step explanation:

Multiply both sides by 15

15(x/15)=11*15

x=165

7 0

4 years ago

A square floor has an area of 480 square feet. Kristin wants to put molding around the entire perimeter of the floor.

OLEGan [10]

Well, if it's a square it will have 4 sides. You have a total area of 480 square feet. You take 480/4 and that is 120. Thus you will need 120 feet of molding.

5 0

3 years ago

Hie, here's my question: $1800 at 6.5% for 30 months

miv72 [106K]

Answer:

A. 10105.86 (compound) or 3510 (simple)

B.11905.86 (compound) or 5310 (simple)

Step-by-step explanation:

If its's compound interest:

$1800(1 + \frac{6.5}{100}) ^{30} = 11905.86$

$11905.86 - 1800 = 10105.86$

If it's simple interest:

$6.5 \times 30 = 195$

$\frac{1800 \times 195}{100} = 3510$

$3510 + 1800 = 5310$

7 0

3 years ago