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
Nitella [24]
3 years ago
8

2. At a college bookstore, Carla purchased a math textbook and a novel that cost a total of $54, not

Mathematics
1 answer:
Svetradugi [14.3K]3 years ago
3 0

Answer:

the price of the novel : $10.25

The price of the math book : $43.75

Step-by-step explanation:

Let M represent math book and N novel

the price of the math textbook, is $8 more than 3 times the price of the novel.

M + N = $54 and M = 3N + 8

we can write 3N + 8 instead of M

N + 3N + 8 = $54 add the like terms

4N = $46

N = $10.25 this is the price of the novel and the price of the math book is $54 - $10.25 = $43.75

You might be interested in
What is -11/8 + -11/4
madam [21]

Answer:

-4and1/8

Step-by-step explanation:math

8 0
3 years ago
Read 2 more answers
n^2-2n-3 where n is the number of key rings in thousands, find the number of key rings sold when the profits is $5,000
ArbitrLikvidat [17]

Answer:

For the profit of $5,000, the key chains made is n = 4,000.

Step-by-step explanation:

Here the given expression , where: n = Number of key rings in thousands is given as:

P(n)  =   n²- 2 n - 3

Now, Profit is given to be $5,000.

Also, as we know 5000 = 5  x (1,000)

⇒  n²- 2 n - 3 = 5

Now, solving the above expression for the value of n, we get:

n^2 -  2 n - 3 = 5\\\implies  n^2  -2n - 8  =  0\\\implies  n^2  -4n +  2n - 8  =  0\\\implies n(n-4)  + 2(n-4)  = 0\\\implies (n-4) (n+2)  = 0

So, n = 4, OR , n = -2

Now, as n = The number of key chains. So it CANNOT BE NEGATIVE.

So,  n=  4  =  4 x (1,000)  = 4,000 key rings.

Hence, for the profit of $5,000, the key chains made is n = 4,000.

8 0
3 years ago
Complete the steps of the derivation of the quadratic formula step 1: (x+b/2a)^2-b^2-4ac/4a^2=0
CaHeK987 [17]
(x+b/2a)^2-(b^2-4ac)/2a=0
Step 2:
Re-write the expression:
(x+b/2a)^2=(b^2-4ac)/4a^2

Step 3:
get the square root of both sides:
x+b/2a=sqrt[(b^2-4ac)/4a^2]

Step 4:
Simplifying we get:
x+b/2a=sqrt[b^2-4ac]/2a

Step 5
Make x the subject:
x=-b/2a+/-sqrt[b^2-4ac]/2a


5 0
3 years ago
Read 2 more answers
Someone please help me.
Ronch [10]

Answer:

I can’t even do my own work✋

4 0
3 years ago
Read 2 more answers
What two decimals are equivalent to 0.9
jeka94
The answer would be 0.90 and 0.900
4 0
3 years ago
Read 2 more answers
Other questions:
  • How can you determine the numbers of miles Ariel swam can you help me plz thanks
    5·2 answers
  • Item 32 On three 150-point geography tests, you earned grades of 88%, 94%, and 90%. The final test is worth 250 points. What per
    10·1 answer
  • How many minutes are in the time interval from 1:22 P.M. to 5:44 P.M.​
    15·1 answer
  • Please read where it states “point S is in between points R and T” thank you
    11·1 answer
  • If tan^3(theta) -1/tan(theta)-1 - sec^2(theta) + 1 = 0 find cot(theta)
    7·1 answer
  • The product of 1and 3/4 is ____________ 3/4.
    15·1 answer
  • There are only red beads and green beads in a bag.
    12·1 answer
  • What is the slope in the equation y= 4x+9
    11·1 answer
  • If 42 students were born in a state other than Texas, how many students does Mrs. Vy have in all her classes
    15·1 answer
  • Which function matches the graph below?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!