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
alexgriva [62]
2 years ago
8

Help help help help help 20 points

Mathematics
1 answer:
Pani-rosa [81]2 years ago
8 0
LCD=30
Equivalent factors with LCD:
2/3=20/30
4/5=24/30
7/10=21/30

This is the solution:

You might be interested in
The Fox TV network is considering replacing one of its prime-time crime investigation shows with a new family-oriented comedy sh
tamaranim1 [39]

Answer:

a) The population proportion is 0.625

b) The confidence interval is (0.578 , 0.672)

Step-by-step explanation:

* Lets explain how to solve the problem

- The Fox TV network is considering replacing one of its prime-time

  crime investigation shows with a new family-oriented comedy show

- There are 400 viewers

∴ The sample size is 400

- 250 of them indicated they would watch the new show and

  suggested it replace the crime investigation show

∴ The number of success is 250

∵ The population proportion P' = number of success/sample size

∴ P' = 250/400 = 0.625

a) The population proportion is 0.625

* Lets solve part b

- Develop a 95 percent confidence interval for the population

  proportion

∵ The confidence interval (CI) = P'(+/-)z*(\sqrt{\frac{P'(1-P')}{n}},

  where P' is the sample proportion, n is the sample size, and z*

  is the value from the standard normal distribution for the desired

  confidence level

∵ 95% z is 1.96

∴ z* = 1.96

∵ P' = 0.625

∵ n = 400

∵ \sqrt{\frac{P'(1-P')}{n}}=\sqrt{\frac{0.625(1-0.625)}{400}}=0.0242

∴ CI = 0.625 ± (1.96)(0.0242)

∴ CI = (0.625 - 0.047 , 0.625 + 0.047)

∴ CI = (0.578 , 0.672)

b) The confidence interval is (0.578 , 0.672)

5 0
3 years ago
Triangle DEF is reflected over the y-axis, and then translated down 4 units and right 3 units. Which congruency statement descri
DerKrebs [107]
The point D transformed into S
The point E transformed into R
The point F transformed into U

The lengths are angles didn't change as result of the transformations (rotation and translation do not change the shape nor dimensions).  Then, the resulting triangle is congruent to the original triangle.

Using the same order for the letters, you might say that ΔDEF ≅ ΔSRU
3 0
2 years ago
Read 2 more answers
A spherical weather balloon is being inflated. The radius of the balloon is increasing at the rate of 9 cm/s. Express the surfac
Zolol [24]
Since a sphere's surface area is 4πr², we then need to find r as a function of time t, which is 9t (since it increases by 9 every second)+0 (the initial value)=9t. Plugging it in, we get 4π(9t)²=4π*36t²=144πt²
8 0
2 years ago
What is the 22nd term of the arithmetic series where a1=8 and a9=56?
Wewaii [24]
A 1 = 8, a 9 = 56
a 9 = a 1 + 8 d
56 = 8 + 8 d
8 d = 48
d = 6  ( common difference )
a 22 = a 1 + 21 d = 8 + 21 · 6 = 8 + 126 = 134


SO the answer is the 22nd term is 134

I really hope this helps!
7 0
3 years ago
(the
sleet_krkn [62]

at x = 0, y = 100, y-intercept

meaning at 0 years, at the very beginning of functioning, the satellite had 100 units of power.

at y = 0, x = 10, x-intercept

meaning, at year 10, the satellite had 0 units of power, already out of power.

4 0
2 years ago
Other questions:
  • Jon bought 1 2⁄3 pounds of green peppers and 3⁄5 pound of yellow peppers. How much more did the green peppers weigh than the yel
    7·2 answers
  • If f(x) = 2x-5, which expression represents f(x+1)
    13·2 answers
  • Find the product of 3 1/8 and 1 2/7 Express your answer in simplest form.
    8·1 answer
  • Triangle ABC is rotated to form ​ △A'B'C' ​.
    12·2 answers
  • Daniela bought a car for $24,000. Each year the value of the car decreases by $1750. B when daniela sells her car she wants to g
    10·1 answer
  • Drusilla replaces the light bulb in the hall closet every 9 months and replaces the air filter every 6 months will she replace b
    6·1 answer
  • -3 2/7 as an improper fraction
    6·1 answer
  • This hanger is in balance. There are two
    14·2 answers
  • Hellllllllllppppppppppp​
    13·1 answer
  • How would you write 564,000,000 in scientific notation?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!