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nordsb [41]
3 years ago
12

Last question of a really important test! I really need some help!

Mathematics
1 answer:
Ket [755]3 years ago
4 0
Last question of a really important test! I really need some help!

A hollow ball is made of rubber that is 1 centimeter thick. The ball has a radius of 5 centimeters at the outside surface.

What is the approximate volume of rubber used to make the ball?

Use 3.14 for pi.

255.4 cm³

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What is 12/24, 3/30, 10/8, 34/20, and 14/8 in lowest term and in percent form
kirza4 [7]
To find a fraction's lowest term, just simplify them and divide to find the decimal form.
12/24 = 1/2, 0.5
3/30 = 1/10, 0.1
10/8 = 5/4, 1.25
34/20 = 17/10, 1.7
14/8 = 7/4, 1.75

Finished!
3 0
3 years ago
What is the solution set of the following equation?
Maslowich

-8x + x + 15 = -7x + 12\\\\-8x+x+7x=12-15\\\\0=-3\\\\x\in\emptyset

8 0
3 years ago
Suzanne is looking at taking out a personal loan. Opportunity Loans is offering her $1600 at 3.45% for 1 year, with interest com
AleksAgata [21]

Step-by-step explanation:

So the general formula for compound interest is A = P(1+\frac{r}{n})^{nt} where r is the interest rate, t is the time in years, and n is the amount of compounds per year. So plugging in the values for both equations you'll get

Opportunity Loans:

 A = 1600(1+\frac{0.0345}{12})^{(12)(1)}

 A = 1600(1.002875)^{12}

 A \approx 1600(1.035)

 A = \$1,656.08

  Now to find the interest accrued on this loan you simply subtract 1600 from the A or final amount

 Interest=1656.08-1600\\Interest=56.08

General Loans:

 A = 1600(1+\frac{0.042}{4})^{(4)(1)}

 A = 1600(1.0105)^4

 A \approx 1600(1.042)

 A = 1,668.27

 To find the interest we do the same thing we did in the previous problem

 interest = 1668.27-1600\\interest=68.27

Opportunity loans has the least amount of interest after a year

 

 

8 0
2 years ago
The Smith's are building a fence around their rectangular shaped yard. The posts are 2 yards apart. There are 7 posts along the
vovangra [49]

Answer:

Posts: 34

Area:  264 yard²

Step-by-step explanation:

Posts: (7 x 2) + (10 x 2) = 34

Area: 2 x (7 - 1) x 2 x (12 - 1) = 2 x 6 x 2 x 11 = 264 yard²

3 0
4 years ago
Determine the intercepts of the line. <br><br> 7x– 5 = 4y – 6
Liula [17]

Answer:

See steps below:)

Step-by-step explanation:

5 0
3 years ago
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