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
blondinia [14]
3 years ago
9

A wise man gave his students this riddle; “how old am I if 400 reduced by three times my age is 175

Mathematics
1 answer:
wlad13 [49]3 years ago
4 0
400-3x=175
-3x=-225
x=75 years old
You might be interested in
in the actual room, the distance between the front and back walls is 8 feet. what is the actual length of the front wall, in fee
Bogdan [553]

Answer:

8 feet

Step-by-step explanation:

it actually will be 8 feet

3 0
2 years ago
Consider the hypothesis test below.
Pavel [41]

Answer:

Z_{H0} =1.79

p-value: 0.0367

Decision: Reject H₀

Step-by-step explanation:

Hello!

Hypothesis to test:

H₀:ρ₁-ρ₂=0

H₁:ρ₁-ρ₂>0

The statistic to use to test the difference between two population proportions is the approximation of Z

Z=<u>     (^ρ₁-^ρ₂)-(ρ₁-ρ₂)     </u>   ≈N(0;1)

   √ (<u>^ρ₁(1-^ρ₁))/n₁)+(^ρ₂(1-^ρ₂)/n₂))</u>

                   

Z=<u>                    (0.28-0.15)-0                    </u>= 1.79

   √ (<u>0.28(1-0.28)/200)+(0.15(1-0.15)/300)</u>

p-value

Remember: The p-value is defined as the probability corresponding to the calculated statistic if possible under the null hypothesis (i.e. the probability of obtaining a value as extreme as the value of the statistic under the null hypothesis).

P(Z>1.79)= 0.0367

Conclusion:

Comparing the p-value against the significance level, you can decide to reject the null hypothesis.

I hope you have a SUPER day!

8 0
3 years ago
. Let f(p) be the average number of days a house stays on the market before being sold for price p in $1,000s. Which statement b
Umnica [9.8K]

Answer: a.This is the average number of days the house stayed on the market before being sold for $150,000.


Step-by-step explanation:

Given: f(p) be the average number of days a house stays on the market before being sold for price p in $1,000s.

To find the meaning f(150),

here p= 150 which means f(150) is the average number of days a house stays on the market before being sold for price 150 in $1,000s.

And 150 in $ 1,000= $150,000

Therefore, f(150) is the average number of days a house stays on the market before being sold for price $150,000.


7 0
3 years ago
Read 2 more answers
What is the center of the circle for this equation:<br> (x - 10)² + (y - 10)² = 25
Nastasia [14]

Answer:

Step-by-step explanation:

center: (-2,3)

Radius: 5

3 0
2 years ago
The sum of two and the quotient of a number x and five
Burka [1]
The sum of two and the quotient of a number x and fine.

sum= +

two= 2

quotient= divide

five= 5

2+ x/5 <- should look something like this

I hope this helps!
~kaikers


3 0
2 years ago
Read 2 more answers
Other questions:
  • If x = -6, which I equality is true
    6·2 answers
  • What is the solution of the equation 8(3x + 4) = 2(12x − 8)?
    10·1 answer
  • For every 6 cups of flour in a bread recipe there what is the ratio cup of milk 2 cups of flour
    14·1 answer
  • Please help me!
    11·1 answer
  • Which one should I choose my brain cells dont exist at this point.
    14·1 answer
  • What is 15/75 = %/100
    6·1 answer
  • Can someone help me with my math work please?
    15·1 answer
  • Pyramid A is a square pyramid with a base side length of 9 inches and a height of 10 inches. Pyramid B has a volume of 1,350 cub
    10·1 answer
  • Write the equation of the line with the givin slope and y-intercept form GET 10 POINTS
    9·1 answer
  • What is the radius of the red circle? What is the radius of the blue circle?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!