A manufacturer makes ball bearings out of molten steel. It takes 5.24 cubic centimeters of molten steel to make ? ball bearings that each have a diameter of 1 centimeter.

Answers

Answer 1
Answer: So we want to know how much ball bearings can be made with 5.24 cm^3 if one ball bearing has a diameter of 1 cm. We know that radius r=d/2=0.5cm So the volume V of one ball bearing is: V=(4/3)*pi*r^3 so V=(4/3)*3.14*(0.5)^3cm^3=0.524cm^3. Now we simply divide the volume of steel by the volume of the ball bearing: 5.24/0.524=10. So we can make 10 ball bearings from 5.24 cm^3 of steel
Answer 2
Answer:

Answer: 10 ball bearings

Plato is annoying

Step-by-step explanation:


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F(x) 5,450(1.024)^x The domain for the function that represents the amount of time the money will be in the college fund is _ the range for the function that represents the amount of money that is in the college fund is _

My brain doesn't feel like working today ;-;

I just need the equation, not the answer

Answers

Answer:

area = lengh x width   is that enough of the formula? :D

Step-by-step explanation:

I'll give you the rest,  just in case :P  My brain got tired at the break before spring, here is the rest

400 = (L+30) X w

400 = 10+30 x 10  ( just b/c I can see 40 x 10  would be 400, calculus could also figure this out for us, but... that would be the minimum fencing he needs to buy and this questions isn't asking that, just make it fit on the back of his house, which we are not given, so just make up something, I used 10 b/c it was convenient )

400 = 40 x 10

2 sides are 40 , and one side is 10

so 90' of fence is needed

 

One hour after a hiker left camp, a biker set out to catch up. If the hiker traveled 3 miles per hour and the biker traveled 6 miles per hour faster, how long will it take for the biker to catch up with the hiker?

Answers

Answer:

30 minutes after biker left

Step-by-step explanation:

Given that :

Speed of hiker = 3 mph

Speed of biker = (3 +6) = 9 mph

Present Distance of hiker when the biker set out ;

Present Distance of hiker = speed * time = (3 * 1) = 3 miles

Time taken to catchup equals :

Present distance + (distance when biker set out) = bikers distance

Let time taken = x

(3 + (3 * x)) = (9 *x)

(3 + 3x) = 9x

3 + 3x = 9x

3 = 9x - 3x

3 = 6x

x = 3/6

x = 1/2 hours

x = 30 minutes

30 minutes after biker left

Answer:

0.5 hrs or 30 mins

Step-by-step explanation:

Evaluate [(30 + 6) − 32] ÷ 9 ⋅ 2.

Answers

Use PEMDAS:

[(30+6) -3^2] / 9* 2
= (36 -9)/ 9* 2
= 27/9* 2
= 3*2
= 6

The final answer is 6~

Answer: just use PEMDAS

[(30+6) -3'2] / 9'2

= (36 -9)/ 9'2

= 27/9'2

= 3'2

= 6

Step-by-step explanation:

8u+3-u+2u=9 please help me I really need help in this

Answers

8u + 3 - u + 2u = 9

(8 - 1 + 2)u + 3 = 9

9u + 3 = 9  |subtract 2 from both sides

9u = 6    |divide both sides by 9

u = 6/9

u = 2/3

The sum of three consecutive multiples of 7 is 777 find these multiples

Answers

7n+7n+7+7n+14=777\n21n=756\nn=36\n\n7n=252\n7n+7=259\n7n+14=266

252,259,266

let the consecutive multiples be 7(n-1) , 7n and 7(n+1)

so 7(n-1)+7n+7(n+1)=777

or 3n=111,

n=37

252,259,266

Rachel jogged along a trail that was one fourth of a mile long.she jogged along the trail 8times .how many miles did rachael jog??

Answers

so you are given that the trail is 1/4 a mile
she jogged 8 *TIMES*
so 8 * 1/4 = the total miles she jogged
That equals to 2 miles...

Hope this helps :)