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]
3 years ago
12

X+y=11 and 22X+15y=228

Mathematics
1 answer:
Lady_Fox [76]3 years ago
6 0
X+y=11
22x+15y=228

y=11-x
22x+15y=228
22x+15(11-x)=228
22x+165-15x=228
7x+165=228
7x=63
x=9

9+y=11
y=2

The solution to the system of equations is (9,2)
You might be interested in
G
Lena [83]
At the museum cafe the answer is
5 0
3 years ago
What is 0.3 repeating as a fraction in simplest form
NeTakaya
The answer is 3/9 or 1/3 in its simplest form
4 0
3 years ago
Read 2 more answers
Myra has a 17 foot roll of crepe paper to make 8 streamers to decorate for a party. How long will each streamer be if she cuts t
Vsevolod [243]
Each streamer would be 2.125 feet long
5 0
3 years ago
Xavier is testing different types of planting soil to determine which type is most effective in growing blueberry bushes. He pur
vladimir1956 [14]

Answer:

He did not control for lurking variables and their impacts on the results of his experiment. Amount of sunlight and water received are two outside variables(or confounding variables) that may impact the growth of his plants and influence the results. He needs to apply the same amount of sunlight and water to each plant within a different planting soil in order to rule out the influence of those two variables and test the sole effect of the soil brand on the plant growth. Otherwise, it would be hard to determine whether his plant growth was because of the soil brand or the different amounts of sunlight and water received

4 0
2 years ago
g A visit to a hospital emergency room for something as simple as a sore throat could have a mean cost of $328. Assume that this
Rasek [7]

Answer:

The cut-off dollar amount is $328.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean cost of $328, standard deviation of $82.

This means that \mu = 328, \sigma = 82

If you want to be in the bottom 50%, what will be the cut-off dollar amount?

The 50th percentile, which is X when Z has a pvalue of 0.5. So X when Z = 0.

Z = \frac{X - \mu}{\sigma}

0 = \frac{X - 328}{82}

X - 328 = 0*82

X = 328

The cut-off dollar amount is $328.

7 0
3 years ago
Other questions:
  • How do i answer these?
    10·1 answer
  • Answer what Property<br> 1) 17+0=17<br> 2)-16*1=-16<br> 3)10*1/10=1<br> EXPLAIN TOO
    9·1 answer
  • There are 50 questions to answer in a trivia contest. Each player starts with 100 points. He or she earns 10 points for each cor
    9·2 answers
  • Hi I need help, anyone???
    5·1 answer
  • Which choice is the appropriate simplified form n restriction for the variable 3x^2 + 6x / x^2 - 2x - 8
    12·1 answer
  • Square ABCD has a diagonal of 8 inches long. How many square inches is the area of the shape?
    14·2 answers
  • Which graph represents the function f(x)= 0.2^x + 3
    9·1 answer
  • A die is thrown once, find the probability of getting an even number and a multiple of 3,​
    5·2 answers
  • Suppose Mei has read 7 books. Write and solve a division equation to find the number of points she has earned.
    7·1 answer
  • Fill in the blank with a number to make the expression a perfect square. <br> w^2 - 2w + __
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!