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AfilCa [17]
3 years ago
13

Megan's cousin wants to buy a new sound system for his car. She goes to the electronics store to help him to pick it out. The ba

se system costs $395. Adding a subwoofer is an additional $89. Two extra rear speakers are $75 each. And upgrading to a six-CD disk changer is an additional $225. Round each amount to the nearest hundred dollars to find a reasonable estimate for the total cost of the new sound system. A. $600 B. $650 C. $700 D. $900
Mathematics
1 answer:
Nikitich [7]3 years ago
5 0

Answer:D


Step-by-step explanation:


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A cone is 3 inches high and has a base with a surface area of 7 square inches. What is the volume of the cone?
lawyer [7]

Answer: the answer should be 7

Step-by-step explanation:  V=πr2h

3=π·1.52·3

3≈7.06858

you can find the radius for the area of the base 7 by dividing by \pi like such 7/3.1459 the squared because remember its in r2 form which give you 1.5 then plug this in for one of two ways to solve A·\pi 1/3 or V=πr2h

4 0
3 years ago
Seven and thirty twp hundreths plus two and one tenth times two and seven tenths minus 18a
alexdok [17]
Answer:  Write the expression as:

" 70 \frac{32}{100} +
                         2\frac{1}{10} * 2\frac{7}{10 − 18a " ; 
______________________________________________________
or;  write as:
______________________________________________________
           " 70.32  + (2.1) * (2.7)  − 18a " ; 
______________________________________________________

To simplify:
______________________________________________________

  Using "PEDMAS" (the "order of operations") ; 

the "multiplication" comes first; 

So:  →  "(2.1) * (2.7) =  5.67 " .

And rewrite:
______________________________________________________
 " 70.32  + 5.67 − 18a " .

Now:  " 70.32 + 5.67 = 75.99 " ; 

So, we can the final simplified expression as:
______________________________________________________
   " 75.99  −  18a " ;  

or; write as:  " 75\frac{99}{100}  −  18a " .
______________________________________________________
7 0
3 years ago
I have 2 more homework questions so please I need help.....
mafiozo [28]

hope it helps you!!!!

4 0
2 years ago
Will give brainliest.
dolphi86 [110]

Answer:

Its a right isosceles triangle

4 0
1 year ago
Read 2 more answers
What is 1/2 multiplied by 1/2? What is 1/2 added by 1/2?
satela [25.4K]
Answer:
1/4 & 1

Solution:
1/2 * 1/2 = (1*1)/(2*2)

1/2 + 1/2 = (1+1)/(2) = 2/2 = 1
7 0
2 years ago
Read 2 more answers
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