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
Yakvenalex [24]
4 years ago
13

(3•x)+(2•y)=2696.04 Solve for x and y

Mathematics
1 answer:
Norma-Jean [14]4 years ago
5 0

Answer:

x=898.68-2/3y     y=1348.02-3/2x

Step-by-step explanation:

You might be interested in
PLEASE HELP <br> What is the probability of an impossible event?
Likurg_2 [28]

Answer:

depending on the fraction you are using, or the answer is impossible.

Step-by-step explanation:

any fraction, so to speak 0/10 is an impossible probability, or 0%

8 0
3 years ago
The Town of Hertfordshire clerk knows that 23% of dogs in the town have completed emotional support training. Hertfordshire plan
Nataly_w [17]

Answer:

95.64% probability that under 30% of the dogs are emotional support trained

Step-by-step explanation:

For each dog, there are only two possible outcomes. Either they have completed emotional support training, or they have not. So we use the binomial probability distribution to solve this problem.

However, we are working with samples that are considerably big. So i am going to aproximate this binomial distribution to the normal.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.

When we are approximating a binomial distribution to a normal one, we have that \mu = E(X), \sigma = \sqrt{V(X)}.

In this problem, we have that:

\mu = E(X) = np = 100*0.23 = 23

\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{100*0.23*0.77} = 4.21

What is the probability that under 30% of the dogs are emotional support trained?

30% of 100 is 0.3*100 = 30

So this is the pvalue of Z when X = 30.

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

Z = \frac{30 - 23}{4.1}

Z = 1.71

Z = 1.71 has a pvalue of 0.9564.

So there is a 95.64% probability that under 30% of the dogs are emotional support trained

5 0
3 years ago
Please help! It's about systems of equations. Answer correctly i will mark brainliest
4vir4ik [10]

Answer:

Step-by-step explanation:

Y= -6

X=-2

7 0
3 years ago
ASAP ASAP ASAP
Aleks04 [339]

Answer: 240cm cubed (the three)

Step-by-step explanation:

Length x width x height

6x4x10

7 0
2 years ago
How many 5/16 foot pieces of wood can you cut from a board that is 1 19/16 feet long?​
lapo4ka [179]

Answer:

5 pieces

Step-by-step explanation:

To find the number of pieces divide 1 7/8 by 3/8

Change 1 7/8 to an improper fraction

substitute this value into the equation

to solve this complex fraction remove the bottom fraction by multiplying both the top and bottom fractions by the inverse of the bottom fraction.

Multiplying by the inverse results in a product of 1 so the result is

dividing by 1 gives just the top fraction.

Dividing out common factors leaves

8 0
3 years ago
Other questions:
  • Inga knows that the radius of a certain cone is 4 cm and its volume is about 134 cubic centimeters. Which is the best estimate o
    15·1 answer
  • Marisa has 24 quarters to play games at a carnival. She only wants to play Ring Toss and Knock Down the Clown. If each game cost
    7·1 answer
  • Maria uses paper squares to create a rectangle. Joey cuts all of Maria’s squares in half to create triangles. He uses all the tr
    6·2 answers
  • 10(-2 - 9v) what is it
    13·1 answer
  • ILL GIVE YOU ALL MY POINTS FOR THIS EASY QUESTION!!!!!!
    9·1 answer
  • gretchen is baking pies. she needs 1/4 vup of butter fir each pie. one stick of butter os 1/2 cup. how many sticks will she need
    15·1 answer
  • Write the number that matches the clues
    14·1 answer
  • Alexander spent $28 for 8 gal of gas. Decide if each statement about the ratio relationship is true or false. "Alexander has $45
    11·1 answer
  • A class of 80 girls and 60 boys sponsored a car
    10·2 answers
  • The product of 1/2 and 2/15 is a/an ________________.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!