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
lutik1710 [3]
3 years ago
7

Solve the system of linear equations by substitution: x+y=27, y=x+9

Mathematics
1 answer:
blondinia [14]3 years ago
3 0

Answer:

you answer will be x=9 , y=18

You might be interested in
Please help Leslie has a watering can that holds 3 liters of water.She uses 250 milliliters of water on each other plants how ma
vredina [299]

Answer:

12

Step-by-step explanation:

1 liter=1000 ml

3 liter=3×1000=3000 ml

number of plants=3000/250=12

4 0
3 years ago
In a randomly selected sample of 100 students at a University, 81 of them had access to a computer at home. Give the value of th
astra-53 [7]

Answer:

The value of the standard error for the point estimate is of 0.0392.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean \mu = p and standard deviation s = \sqrt{\frac{p(1-p)}{n}}

In a randomly selected sample of 100 students at a University, 81 of them had access to a computer at home.

This means that n = 100, p = \frac{81}{100} = 0.81

Give the value of the standard error for the point estimate.

This is s. So

s = \sqrt{\frac{0.81*0.19}{100}} = 0.0392

The value of the standard error for the point estimate is of 0.0392.

7 0
3 years ago
Viola says that she can find the surface area of a
Viefleur [7K]

Answer:

This is only true with a cube

Step-by-step explanation:

Only a cube has 6 equal faces of equal size.

I can't really put a diagram here so i hope that explanation helped!

Stay safe! <3

8 0
2 years ago
Please answer as fast as possible thanks
svp [43]

The correct answer is the 2nd choice because -1/6 is closer to 0 and the surface of the pool would be considered 0. -4/6 is farther away from 0 so it is less.

3 0
3 years ago
Help me please!! This test is due tomorrow!! What's the answer? 5 stars and brainliest!
puteri [66]

Answer:

5/36

Step-by-step explanation:

I added them up

Tell me if I am wrong.

Can I get brainliest

3 0
3 years ago
Other questions:
  • 1 1. You can work at most 20 hours next week. You need to earn at least $92 to cover you weekly expenses. Your dog- walking job
    11·1 answer
  • Which of the following figures are quadrilaterals?
    13·1 answer
  • 1 _______=5,280 feet
    8·1 answer
  • Sandra saves 11% of her salary for retirement. This year her salary was $1,000 more than in the previous year, and she saved $4,
    14·1 answer
  • Write a real world situation that could be modelled by the equation 100-6x=160-10x
    14·1 answer
  • A punch recipe requires 2 cups of cranberry juice to make 3 gallons of punch. Using the same recipe, what is the amount of cranb
    11·1 answer
  • Please help, I can't figure out how to set this up. There's supposed to be 2 equations.
    14·1 answer
  • PLS HELP HELP , will Mark brainliest!!
    9·1 answer
  • Trevor paints 1/6 of the fence surrounding his farm each day. How many days will it take him to paint 3/4 of the fence ?​
    14·1 answer
  • Factor the expression using the GCF.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!