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
iVinArrow [24]
3 years ago
10

Please help asap 40 pts

Mathematics
2 answers:
ch4aika [34]3 years ago
6 0
73.32. ft/sec is the correct answer




good luck

Korolek [52]3 years ago
3 0
v=\sqrt{64h}=\sqrt{64}\cdot\sqrt{h}=8\sqrt{h}\\\\h=84\ ft.\\\\substitute\\\\v=8\sqrt{84}\approx8\cdot9.1651\approx73.32

Answer:\ 73.32\ ft/sec

You might be interested in
Directions for questions 4 & 5: We selected a random sample of 100 StatCrunchU students, 67 females and 33 males, and analyz
GaryK [48]

Answer:

The 95% confidence interval for the difference between means is (-2164.21, -299.13).

The lower limit on the confidence interval is -$2164.21.

The upper limit on the confidence interval is -$299.13.

Step-by-step explanation:

The sample data is:

Gender   Mean          Std. dev.     n

Female    2577.75      1916.29     67

Male        3809.42     2379.47     33

We have to calculate a 95% confidence interval for the difference between means, with a T-model.

The sample 1, of size n1=67 has a mean of 2577.75 and a standard deviation of 1916.29.

The sample 2, of size n2=33 has a mean of 3809.42 and a standard deviation of 2379.47.

The difference between sample means is Md=-1231.67.

M_d=M_1-M_2=2577.75-3809.42=-1231.67

The estimated standard error of the difference between means is computed using the formula:

s_{M_d}=\sqrt{\dfrac{\sigma_1^2}{n_1}+\dfrac{\sigma_2^2}{n_2}}=\sqrt{\dfrac{1916.29^2}{67}+\dfrac{2379.47^2}{33}}\\\\\\s_{M_d}=\sqrt{54808.468+171572.045}=\sqrt{226380.513}=475.795

The t-value for a 95% confidence interval is t=1.96.

The margin of error (MOE) can be calculated as:

MOE=t\cdot s_M=1.96 \cdot 475.795=932.54

Then, the lower and upper bounds of the confidence interval are:

LL=M_d-t \cdot s_{M_d} = -1231.67-932.54=-2164.21\\\\UL=M_d+t \cdot s_{M_d} = -1231.67+932.54=-299.13

The 95% confidence interval for the difference between means is (-2164.21, -299.13).

6 0
3 years ago
4. If it costs $18 for 24 pounds of grapes, how much would 8 pounds cost? What is the unit rate?
Anon25 [30]

Answer:

144 and 18

Step-by-step explanation:

18 ×24=432÷3=144

7 0
2 years ago
Which angles are corresponding angles?
Arlecino [84]
The correct answer are C. D. and E.
3 0
3 years ago
Simplify the radical expression.
Fofino [41]
B. 10 square root 5
hope this helps:)
pls mark thanks and brainliest:)
6 0
3 years ago
What is 2x+y=3 and x+y=3<br> 1.{-1.5,0}<br> 2.{0,-1.5]<br> 3.{0,3}<br> 4.{3,0}
Yakvenalex [24]
The answer would be 3. {0,3}.

Remember: {x,y}

2(0)+3=3
0+3=3

0+3=3
4 0
2 years ago
Other questions:
  • XVerify the identity. (7 points) cos 4u = cos22u - sin22u
    5·1 answer
  • Which equation is the inverse of 2(x - 2)^3=8(7+y)​
    5·2 answers
  • If x≠4 and x≠-4, the fraction x^2-8x+16/x^2-16 can be simplified to what?
    14·1 answer
  • Help MOI PLS!! :):):):):)
    5·2 answers
  • Which The following radical functions is graphed below
    15·1 answer
  • The area of a rectangle is 600 square meters. The width is 30 meters. What is the length?
    14·2 answers
  • If 3x+2=5/9, what is the value of −3x+8?
    10·1 answer
  • What is 6.15 expressed as a fraction?
    8·2 answers
  • AVB has a measure of 70° and VM is it’s angle bisect or what is the measure of AVM
    12·1 answer
  • Find the measure of a negative angle coterminal with<br> 4л<br> 3<br> radians.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!