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
Alisiya [41]
3 years ago
12

Two numbers sum 54, twice the first subtracted from the second is 9

Mathematics
1 answer:
Rudik [331]3 years ago
6 0

Answer:

21,33

Step-by-step explanation:

x+y=54

2x-y=9

3x=63

x=21

You might be interested in
A random sample of 8 recent college graduates found that starting salaries for architects in New York City had a mean of $42,653
ycow [4]

Answer:

C. (36337.32, 48968.68)

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

Now, find M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.96*\frac{9114}{\sqrt{8}} = 6315.68

The lower end of the interval is the sample mean subtracted by M. So it is 42653 - 6315.68 = 36337.32.

The upper end of the interval is the sample mean added to M. So it is 42653 + 6315.68 = 48968.68.

So the correct answer is:

C. (36337.32, 48968.68)

3 0
3 years ago
How much oil wells in a given field will ultimately produce is key information in deciding whether to drill more wells. Data was
Ugo [173]

Answer:

Check the explanation

Step-by-step explanation:

Kindly check the attached image below to see the step by step explanation to the question above.

3 0
4 years ago
N the drawing, six out of every 10 tickets are winning tickets. Of the winning tickets, one out of every three awards is a large
MaRussiya [10]

the answer would be one-fifth :)

hope this helped

5 0
3 years ago
Read 2 more answers
The functions f(x) = (x + 1)2 − 2 and g(x) = -(x − 2)2 + 1 have been rewritten using the completing-the-square method. Is the ve
Ksenya-84 [330]

Answer:

The negative outside the parentheses indicates that the vertex is a maximum

f(x) has a minimum vertex

g(x) has a maximum

Step-by-step explanation:

7 0
3 years ago
Can anyone please help me please
Rashid [163]

Answer:

this isnt spanish

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • Jaden and cadence share a reward of $140 in a ratio of 2/5. what fraction of the total reward does Jaden get? how do you know?
    9·2 answers
  • Which equation is equivalent to 2/3x - 5/6 = -5/12x + 1/4 ?
    15·2 answers
  • Devon has 14 steel balls of equal weight. If he puts 8 of them in one pan of a balance, and the rest along with a weight of 20 g
    8·2 answers
  • The point (Negative StartFraction StartRoot 2 EndRoot Over 2 EndFraction, StartFraction StartRoot 2 EndRoot Over 2 EndFraction)
    12·2 answers
  • 1/3(4+18)-2 to the second power
    14·1 answer
  • The larger of two numbers is 10 more than three times the smaller number is larger number decreased by the smaller number is 80
    6·1 answer
  • Equivalent ratio for 5:9
    7·1 answer
  • Which is the better buy 3 pounds for $8.31 or 5 pounds to $12.95
    6·2 answers
  • 8.<br><br> Find the slope of the line.<br><br> A. 0<br> B. -2<br> C. Undefined<br> D. 2
    9·2 answers
  • What is 40+56 in GCF
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!