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
uysha [10]
3 years ago
10

Jason had $32. He spent all the money on buying 4 CDs for $x each and 2 magazines for $y each. If Jason would have bought 5 CDs

and 2 magazines, he would have run short of $4.
A student concluded that the price of each CD is $5 and the price of each magazine is $6. Which statement best justifies whether the student's conclusion is correct or incorrect? A. The student's conclusion is incorrect because the solution to the system of equations 4x + 2y = 4 and 5x + 2y = 36 is (9, 4).

B. The student's conclusion is incorrect because the solution to the system of equations 4x + 2y = 32 and 5x + 2y = 36 is (4, 8).

C. The student's conclusion is correct because the solution to the system of equations 4x + 2y = 4 and 5x + 2y = 36 is (5, 6).

D. The student's conclusion is correct because the solution to the system of equations 4x + 2y = 32 and 5x + 2y = 36 is (5, 6).
Mathematics
2 answers:
larisa86 [58]3 years ago
4 0
. The student's conclusion is incorrect because the solution to the system of equations 4x + 2y = 32 and 5x + 2y = 36 is (4, 8).
B is right option
4x + 2y = 32
5x + 2y = 36 subtracting
-x=-4
x=4
4(4)+2y=32
16+2y=32
2y=16
y=8
hope this helps
melisa1 [442]3 years ago
4 0

Answer:

y= 4,8

Step-by-step explanation:

You might be interested in
Simplify 4^-4.<br> please help I have 10 minutes
kolezko [41]

Answer:

1/256

Step-by-step explanation:

4^{-4}

(1/4)^{4}

=> 1/256

7 0
3 years ago
If a procedure meets all of the conditions of a binomial distribution except the number of trials is not​ fixed, then the geomet
morpeh [17]

Answer:

The probability is 0.0428

Step-by-step explanation:

First, let's remember that the binomial distribution is given by the formula:

P(X=k) =\left[\begin{array}{ccc}n\\k\end{array}\right] p^{k}(1-p)^{n-k} where k is the number of successes in n trials and p is the probability of success.

However, the problem tells us that when there isn't a number of trials fixed, we can use the geometric distribution and the formula for getting the first success on the xth trial becomes:

P(X=x) = p(1-p)^{x-1}\\

The problem asks us to find the probability of the first success on the 4th trial (given that the first subject to be a universal blood donor will be the fourth person selected)

Using this formula with the parameters given, we have:

p = 0.05

x = 4

Substituting these parameters in the formula and solving it, we get:

P(X=4) = 0.05(1-0.05)^{4-1}\\P(X=4) = 0.05 (0.95)^{3}\\P(X=4) = 0.05(.8573)\\P(X=4) = 0.0428

Therefore, the probability that the first subject to be a universal blood donor is the fourth person selected is 0.0428 or 4.28%

7 0
3 years ago
The data in the table compares x, the number of pages in a chapter, to y, the amount of time, in minutes, spent reading. The fun
ololo11 [35]
21
18=0.86x - 0.09     Put 18 as the y value and solve for x
18.09=0.86x           Add 0.09 on both sides.
21.03=x                  Then divide on both sides by 086

7 0
3 years ago
Read 2 more answers
Write the expression 3 +2 x 20
prohojiy [21]
3+2 x20
3+2=5
5x20=
100
Hope this helped.
3 0
3 years ago
Read 2 more answers
lan has a flower pot in the shape of a rectangular prism . The base of the flower pot is 36 square inches . The flower he's plan
JulijaS [17]

Answer:

108

Step-by-step explanation:

  1. volume = area  of the base * height
  2. Area of the base = 36 square inches .
  3. The height = 3 inches
  4. 36 * 3 = 108
4 0
3 years ago
Other questions:
  • what is the missing number? imput B;4,12,16,24,32,40. output A:8,16,20,_,_ rules a=b+4. SUPER URGENT !!!!!!!!!!
    12·1 answer
  • Which of the following is a validation of congruency between two polygons?
    14·2 answers
  • What is the simplified expression for 2 power 2 multiplied by 2 power 3 over 2 power 4?
    7·2 answers
  • I need help quickly with these problems please see the images thank you so much
    7·1 answer
  • Two arcs of a circle are congruent if and only if their associated radii are
    14·1 answer
  • Help pleaseee! Greatly appreciated if you do
    14·1 answer
  • $31.40 and $5 in slope intercept form
    9·1 answer
  • Write a story that can be represented by the equation<br> y=x+<br> 5*.
    6·1 answer
  • how can you tell that the inequality 3x - 1 &gt; 3x +2 has no solution just by looking at the terms in the inequality
    11·1 answer
  • Tony picked 5 1/2 bushels of tomatoes. He gave 1 3/8 bushels to his grandmother and sold the rest. Tony sold Answer bushels of t
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!