2 years ago

What is the volume of a sphere with a diameter of 7.6 cm, rounded to the nearest tenth of a cubic centimeter?

Mathematics

1 answer:

alexgriva [62]2 years ago

8 0

4/3(pi)radius^3
4/3(pi)3.8^3
229.8473cm3

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A metal strip is being installed around a workbench that is 8 feet long and 3 feet wide. If the stripping costs $6 per foot, fin

Reil [10]

I believe the answer is $144
Because you first have to multiple 8ft*3 ft=24ft then you have to multiply 24ft times $6=$144

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4 years ago

Please assist me with these problems using the 45-45-90 relationship triangles

TiliK225 [7]

Answer:

see below

Step-by-step explanation:

side opposite 90 angle = x $\sqrt{2}$

sides opposite 45 angle = x

the multiplication and division by $\sqrt{2}$ should be self explanatory

1. x = 5, y = 5

2. v = 10, u = 10

3. x = $\sqrt{10}$ , y = $\sqrt{5}$

4. m = 5, n = $\frac{5\sqrt{2} }{2}$

5. a = $\frac{3\sqrt{2} }{2}$ , b = $\frac{3\sqrt{2} }{2}$

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4 years ago

12+3y+y=?<br> What is the answer?

puteri [66]

Answer:

12+4y

Step-by-step explanation:

12+3y+y=12+4y

3 0

3 years ago

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Find the value of 5.8 ÷ 1.2.

EastWind [94]

Your answer is 4.83

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3 years ago

What is the radius of a circle whose equation is x2 + y2 + 8x – 6y + 21 = 0?

s344n2d4d5 [400]

Answer:

2 units

Step-by-step explanation:

The given equation of the circle is:

$x^{2} + y^{2}+8x-6y+21=0$

The general equation of the circle is:

$x^{2} + y^{2}+2gx+2fy+c=0$

Comparing the given equation with the general equation we can say:

g = 4

f = -3

c = 21

The formula for radius of the circle is:

$radius=\sqrt{g^{2} +f^{2} -c }$

Using these values of the given circle, we get:

$radius=\sqrt{(4)^{2}+(-3)^{2}-21}\\\\radius=\sqrt{4}\\\\radius=2$

Therefore, the length of radius of the given circle is 2.

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3 years ago