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
Mamont248 [21]
3 years ago
15

The height of a diver during a dive can be modeled by h=-16t^2, where h is height in feet relative to the diving platform and t

is time in seconds. Find the time it takes for the diver to reach the water is the platform is 49 feet high
Mathematics
1 answer:
Makovka662 [10]3 years ago
3 0
H=-16t^2+49
find where h=0
0=49-16t^2
0=7^2-(4t)^2
difference of 2 perfect square
0=(7-4t)(7+4t)
set to zero
7-4t=0
7=4t
7/4=t

7+4t=0
4t=-7
t=-7/4
faslse, this is before the person jumps

answer is 7/4 seconds
You might be interested in
Four deep-sea divers reported the depths they went below sea level on their last dive. Which depth is the farthest from sea leve
Andreas93 [3]

Answer: C. -82

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Suppose the test scores of students in a class are normally distributed with a mean of 86 and a standard deviation of 4. What is
WARRIOR [948]

Answer:

-2.5

Step-by-step explanation:

Here in this question, we are interested in calculating the z-score for a student that had a particular mark at the test

To calculate the z-score, we need to use a mathematical formula

Mathematically;

z-score = (x - mean)/SD

From the question;

x = 76

mean = 86

standard deviation SD = 4

Plugging these values in the equation, we have;

z-score = (76-86)/4 = -10/4 = -2.5

4 0
3 years ago
A pack of 6 cans of pop costs £1.80. A pack of 10 cans of pop costs £3.50.
Lelechka [254]

Let us look at the cost per can of both packs.

Cost of can in 6-pack = 1.80/6

                                      = £0.30

Cost of can in 10-pack = 3.50/10

                                     = £0.35

Since the cost of a can in the 6-pack is cheaper, it would be better to buy the 6-pack if you were looking to save money.

5 0
3 years ago
Find the area 10yd, 4yd, 10yd, 13yd and 8yd​
kakasveta [241]

Answer:

41,600yd's is the area....

7 0
3 years ago
A marine aquarium has a small tank and a large tank, each containing only red and blue fish. In each tank, the ratio of red fish
Anna007 [38]

Answer:

Ratio of blue fish in the small tank to the red fish in large tank is 10 : 6279

Step-by-step explanation:

Let the number of red fish and blue fish in the large tank are x and y respectively.

Similarly ratio of red fish and blue fish in the small tank are x' and y' respectively.

Since in each tank ratio of the red fish to blue fish is 333 : 444

That means x : y = 333 : 444

Or \frac{x}{y}=\frac{333}{444}

⇒ \frac{x}{y}=\frac{3}{4}

⇒ y = \frac{4x}{3} --------(1)

Similarly x' : y' = 333 : 444

⇒ \frac{x'}{y'}=\frac{333}{444}

⇒ \frac{x'}{y'}=\frac{3}{4}

⇒ x' = \frac{3y'}{4} ------(2)

Ratio of the fish in large tank to the fish in small tank is 464646 : 555

So (x + y) : (x' + y') = 464646 : 555

\frac{x+y}{x'+y'}=\frac{464646}{555}

Now we replace the values of x and y' from equation (1) and equation (2)

\frac{(x+\frac{4x}{3})}{(\frac{3y'}{4}+y')}=\frac{464646}{555}

\frac{\frac{7x}{3}}{\frac{7y'}{4}}=\frac{464646}{555}

\frac{4}{3}\times \frac{x}{y'}=\frac{464646}{555}

\frac{x}{y'}=\frac{3}{4}\times \frac{464646}{555}

\frac{x}{y'}=\frac{232323}{370}

\frac{y'}{x}=\frac{370}{232323}

\frac{y'}{x}=\frac{10}{6279}

Therefore, ratio of blue fish in the small tank to the red fish in large tank is 10 : 6279

4 0
4 years ago
Other questions:
  • A certain field is a rectangle with a perimeter of 940 feet. the length is 190 feet more than the width. find the width and leng
    8·1 answer
  • <img src="https://tex.z-dn.net/?f=2x%20%2B%20y%20%3D%203y%20-%202" id="TexFormula1" title="2x + y = 3y - 2" alt="2x + y = 3y - 2
    14·1 answer
  • Terrence plants a garden that has 8 rows of flowers, with 28 flower each row. How many flowers did Terrence plant?
    5·2 answers
  • Translate the following statement: "Your grade, g, must be at least<br> 75 to pass this class."
    13·1 answer
  • Jada made 8 cups of blueberry jam and divided the jam equally among 6 containers. How much jam went in each container?
    14·2 answers
  • 10. Which of the following sets is written in order from least to greatest?
    11·1 answer
  • What is the answer for this plz help
    7·1 answer
  • Solve for x in the equation 2x2-5x+1 -3.<br> 29<br> 41<br> o xtv<br> O<br> O<br> o x + V47
    10·1 answer
  • Write each of the following expressions without using absolute value. |z−7|−|z−9|, if z&lt;7
    15·1 answer
  • Find the range of the function y=-x^2-3x when the domain is {-5, 0, 2}
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!