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
MakcuM [25]
2 years ago
6

Find two positive numbers whose difference is 2828 and whose product is 39003900.

Mathematics
1 answer:
Anastasy [175]2 years ago
7 0
If the question is:
"<span>Find two positive numbers whose difference is 28 and whose product is 3900</span>"

If the larger number is x, then
x-3900/x=28
multiply by x and transpose
x^2-28x-3900=0
Factor
(x+78)(x-50)=0
Using the zero product property,
x=-78 or x=50, ie.  x=50, y=-78

NOTE: if question requires both numbers be positive, there is no solution.
You might be interested in
The manager of a fleet of automobiles is testing two brands of radial tires and assigns one tire of each brand at random to the
Darya [45]

Answer:

Brand 1    Brand 2    Difference

37734       35202        2532

45299      41635         3664

36240      35500        740

32100      31950         150

37210       38015       −805

48360     47800        560

38200    37810          390

33500    33215        285

Sum of difference = 2532+ 3664+740+150 −805+  560 +390 +285 = 7516

Mean = d=\frac{7516}{8}

Mean = d=939.5

a) d= 939.5

\text{Sample Standard deviation, s} = \sqrt{\dfrac{(x-\bar{x})^2}{n-1}}

=\sqrt{\dfrac{(2532-939.5)^2+(3664-939.5)^2+(740-939.5)^2 ...+(285-939.5)^2}{8-1}}

=1441.21

b)SD= 1441.21

c)Calculate a 99% two-sided confidence interval on the difference in mean life.

confidence level =99%

significance level =α= 0.01

Degree of freedom = n-1 = 8-1 =7

So, t_{\frac{\alpha}{2}}=3.499

Formula for confidence interval = \left( \bar{X} \pm t_{\frac{\alpha}{2}} \times \frac{s}{\sqrt{n}} \right)

Substitute the values

confidence interval = 939.5 \pm 3.499 \times \frac{1441.21}{\sqrt{8}} \right)

confidence interval = 939.5 - 3.499 \times \frac{1441.21}{\sqrt{8}} \right) to  = 939.5 + 3.499 \times \frac{1441.21}{\sqrt{8}} \right)

Confidence interval −843.396\ to  2722.396

8 0
2 years ago
Solve for x: 2/3=8/x+6
Tresset [83]

Answer:

x = 6

Step-by-step explanation:

2/3=8/x+6

Using cross products

2 * (x+6) = 3*8

2(x+6) = 24

Divide by 2

x+6 =12

Subtract 6

x = 6

8 0
2 years ago
Read 2 more answers
Help please 17 points!!
Darina [25.2K]

Answer:

I dont really do this kind of work but i think its A

Step-by-step explanation:

3 0
2 years ago
If a/ b = 6/7 and a/c = 2/5 , what is the value of 3b+c in terms of a?
Nookie1986 [14]
Not sure. has the same question
6 0
3 years ago
Read 2 more answers
Which of the following is an example of a quadratic equation?
WARRIOR [948]

Answer: B

Step-by-step explanation:

A quadratic equation has degree 2.

8 0
1 year ago
Other questions:
  • Solve the equation for x <br> 3/10x-1/5=1
    7·1 answer
  • The GCF of a number and 96 is 32. The sum of the number's digits is 13. Which choice satisfies these conditions?
    9·1 answer
  • Which of the following could be the measures of the three angles of a triangle?
    15·1 answer
  • Asif sees a pair of shoes in turkey the shoes cast.
    9·1 answer
  • Can you help with this math please?
    15·1 answer
  • which qaudratic equation is equivalent to (x+2)^2+5(x+2)-6=0 a. (u+2)^2+5(u+2)-6=0 where u=(x-2) b. u^2+4+5u-6=0 where u= (x-2)
    5·1 answer
  • Dexter paid $74.94 for 201/5 gallons of gas. What's the price of gas where Dexter filled up his vehicle?
    10·1 answer
  • Is the line y=5 parallel or perpendicular to the x- axis? Explain your answer.
    13·1 answer
  • When solving the given equation, what is the first step?
    10·2 answers
  • Change to a decimal. Round to hundredths if necessary.<br> 4 5/8
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!