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SSSSS [86.1K]
3 years ago
13

In a certain archery competition, archers shoot 25 arrows and receive penalty points for each missed shot: 1 penalty point for t

he first miss and for each subsequent miss a penalty that is ½ point greater than for the previous miss. If an archer received 7 penalty points total, how many times did he hit the target
Mathematics
1 answer:
Anna71 [15]3 years ago
6 0

Answer:

He hit the target <u>21 times.</u>

Step-by-step explanation:

7 - 1 = 6 - 1.5 = 4.5 - 2 = 2.5 - 2.5 = 0 (4 penalties total)

25 - 4  = <u>21 hits</u>

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Approximately how many times as great is the volume of a grapefruit with a diameter 16 cm as the volume of a lime with a diamete
SIZIF [17.4K]

Answer: The volume of the grapefruit is approximately 8 times as great as the volume of the lime.

Step-by-step explanation:

You need to use the formula for calculate the volume of a sphere. This is:

V=\frac{4}{3}\pi  r^3

Where "r" is the radius.

<u>Volume of the grapefruit</u>

You know that its diameter is 16 centimeters.

Since the radius is half the diameter, you get that its volume is:

V_g=\frac{4}{3}\pi  (\frac{16\ cm}{2}) ^3\\\\V_g= 2,144.66\ cm^3

<u> Volume of the lime</u>

According to the information given in the exercise, the diameter of the lime is 8 centimeters.

As it was explained above, the radius is half the diameter. Knowing that, you get that volume of the lime is the shown below:

V_l=\frac{4}{3}\pi  (\frac{8\ cm}{2}) ^3\\\\V_l= 268.08\ cm^3

In order to find approximately how many times as great is the volume of theat grapefruit as the volume of that lime, you need to divide the volumes calculated above. Then:

\frac{2,144.66\ cm^3}{268.08\ cm^3}\approx8\ times

8 0
3 years ago
Can someone please help me with 13 and 14, please show work, thx :)
Shalnov [3]
13.
1st: split the 1 shape into 2 shapes. (spit across to where you see one right angle(top), and a trapezoid(bottom)

2nd: now what i did was fill that gap to where the total height is 9 and the total length is 7. ( if you don't want to do that it is fine )

3rd: for the top do 5 times 2 = 10

4th: for the bottom do 4 times 5 = 20

5th: add 10 (top) and 20 (bottom) = 30
7 0
3 years ago
What is the slope of the line that contains the points (-2, 2) and (3, 4)?
Murljashka [212]
(Y1-Y2)/(X1-X2)

(2-4)/(-2-3)

-2/-5

2/5
5 0
3 years ago
Read 2 more answers
Distance between (7,-1) and (),3)
Art [367]

Answer:

65

Step-by-step explanation:

3 0
2 years ago
How can I find the area and perimeter of the circle? pls help
strojnjashka [21]
The perimeter of the circle is also known as the circumference that said figure out what the diameter is and multiply that by pi (3.14) 
8 0
3 years ago
Read 2 more answers
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