1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
gayaneshka [121]
3 years ago
6

A tennis player lands 25 out of 40 first serves in bounds for a success rate of 62.5%. How many more consecutive first serves mu

st she land in bounds to increase her success rate to 70%.
Mathematics
1 answer:
kolezko [41]3 years ago
8 0
She will need to make 10 more consecutive first serves until the number of serves in out of the total number of serves is equal to 70%.

Start with 25/40, then 26/41, 27/42, 28/43, 29/44, 30/45, 31/46, 32/47, 33/48, 34/49, 35/50 (70%).
You might be interested in
Tammy received a $70 gift card for a coffee store. She used it in buying some coffee that cost $8.41 per pound. After buying the
Ivahew [28]

Total money Tammy has = $70

Money she is left with now = $19.54

Therefore, the money she used on coffee =

70 - 19.54 = $50.46

Now,

1 pound coffee costs $8.41

Pounds of coffee she bought = 50.46 ÷ 8.41

= 6 pounds

7 0
2 years ago
Which of the following are situations that can be modeled with a quadratic function? Select all that apply.
Lina20 [59]

Answer:

Option 2 and 5 are correct.

Step-by-step explanation:

We need to tell which one of them is quadratic function.

Option 1 is exponential decay so, it is not quadratic.

Option 2 is quadratic because the diver will take the parabolic shape when jumps.

Option 3 is not quadratic.Option 4 is not quadratic it is linear.

Option 4 is again exponential not quadratic.

Option 5 is quadratic because it takes the parabolic shape again.


4 0
3 years ago
Read 2 more answers
Helppppppppppppppppppp​
goldenfox [79]

Answer:

Encourage po

Step-by-step explanation:

7 0
3 years ago
Air pressure may be represented as a function of height (in meters) above the
denis-greek [22]

Answer: OPTION C.

Step-by-step explanation:

<h3> The complete exercise is: "Air pressure may be represented as a function of height (in meters) above the surface of the Earth, as shown below:</h3><h3>  P(h) =P_0e^{-0.00012h} </h3><h3> In this function P_o   is the air pressure at the surface of the earth, and h is the height above the surface of the Earth, measured in meters. At what height will the air pressure equal 50% of the air pressure at the surface of the Earth"</h3><h3></h3>

Given the following function:

P(h) =P_0e^{-0.00012h}

In order to calculate at what  height the air pressure will be equal 50% of the air pressure at the surface of the Earth, you can follow these steps:

1. You need to substitute P(h)=0.5P_o into the function:

0.5P_o=P_0e^{-0.00012h}

2. Finally, you must solve for h.

Remember the following property of logarithms:

ln(b)^a=a*ln(b)\\\\ln(e)=1

Then, you get this result:

0.5P_o=\frac{P_o}{e^{0.00012h}}\\\\(0.5P_o)(e^{0.00012h})=P_o\\\\e^{0.00012h}=\frac{P_o}{0.5P_o}\\\\ln(e)^{0.00012h}=ln(2)\\\\0.00012h*1=ln(2)\\\\h=\frac{ln(2)}{0.00012}\\\\h=5576.2

7 0
3 years ago
Out of a total of 300 animals in the zoo, 45 are birds. What percent of animals in the zoo are birds
Ulleksa [173]
The answer above isn't right- lol.

15% of the animals in the zoo are birds.

[45/300 is .15, or 15%.]
4 0
3 years ago
Other questions:
  • A circle has center at (7, 0). What is the equation of the line that is tangent to the circle at (2, 0)?
    14·1 answer
  • the table shows the fraction of votes that each candidate received. if 230 students voted, how many students voted for each cand
    10·2 answers
  • Round to the Nearest Ten
    6·1 answer
  • A particular telephone number is used to receive both voice calls and fax messages. Suppose that 25% of the incoming calls invol
    12·1 answer
  • What is the value of x?
    15·1 answer
  • There are three consecutive integers. The product of the first and the last is 35 more than 5 times the second number. Find thes
    8·2 answers
  • Which of the following is a mathematical statement showing that one ratio is equal to another ratio?
    12·1 answer
  • Y= 1/2x;x= -18 what is the value of y given value of x
    9·2 answers
  • How to solve for 93,94, and 95
    10·1 answer
  • Jackets price is reduced from $25 to $15. by what percentage was the price of the sweater reduced.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!