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
Dahasolnce [82]
2 years ago
13

The marked price of a textbook is $20. A school is given a 6.5% discount. Find the amount of money the

Mathematics
2 answers:
ladessa [460]2 years ago
6 0
6.5% of 20 is 1.3
20-1.3 = 18.7 (new price with discount)

18.7x200 = $3740
joja [24]2 years ago
4 0
7 times200=1,400 that’s your answer to your problem
You might be interested in
Determine all real values of p such that the set of all linear combination of u = (3, p) and v = (1, 2) is all of R2. Justify yo
Rama09 [41]

Answer:

p ∈ IR - {6}

Step-by-step explanation:

The set of all linear combination of two vectors ''u'' and ''v'' that belong to R2

is all R2 ⇔

u\neq 0_{R2}      

v\neq 0_{R2}

And also u and v must be linearly independent.

In order to achieve the final condition, we can make a matrix that belongs to R^{2x2} using the vectors ''u'' and ''v'' to form its columns, and next calculate the determinant. Finally, we will need that this determinant must be different to zero.

Let's make the matrix :

A=\left[\begin{array}{cc}3&1&p&2\end{array}\right]

We used the first vector ''u'' as the first column of the matrix A

We used the  second vector ''v'' as the second column of the matrix A

The determinant of the matrix ''A'' is

Det(A)=6-p

We need this determinant to be different to zero

6-p\neq 0

p\neq 6

The only restriction in order to the set of all linear combination of ''u'' and ''v'' to be R2 is that p\neq 6

We can write : p ∈ IR - {6}

Notice that is p=6 ⇒

u=(3,6)

v=(1,2)

If we write 3v=3(1,2)=(3,6)=u , the vectors ''u'' and ''v'' wouldn't be linearly independent and therefore the set of all linear combination of ''u'' and ''b'' wouldn't be R2.

7 0
3 years ago
Select the correct answer.
creativ13 [48]

Answer:

answer is b jejejejsjsjwj

7 0
3 years ago
What's 6/7 written as a fraction with a denominator of 42
zimovet [89]
36/42 
multiply the top and bottom by 6. 
7 x 6 = 42 
6 x 6= 36 
3 0
3 years ago
(7a^3 -2a-2)+(-5a+3)
atroni [7]

Answer:

7a  3  −7a+1

Step-by-step explanation: I hope this help.

STEP

1

:

Equation at the end of step 1

 ((7a3 -  2a) -  2) +  (3 - 5a)

STEP

2

:

Polynomial Roots Calculator :

2.1    Find roots (zeroes) of :       F(a) = 7a3-7a+1

Polynomial Roots Calculator is a set of methods aimed at finding values of  a  for which   F(a)=0  

Rational Roots Test is one of the above mentioned tools. It would only find Rational Roots that is numbers  a  which can be expressed as the quotient of two integers

The Rational Root Theorem states that if a polynomial zeroes for a rational number  P/Q   then  P  is a factor of the Trailing Constant and  Q  is a factor of the Leading Coefficient

In this case, the Leading Coefficient is  7  and the Trailing Constant is  1.

The factor(s) are:

of the Leading Coefficient :  1,7

of the Trailing Constant :  1

Let us test ....

  P    Q    P/Q    F(P/Q)     Divisor

     -1       1        -1.00        1.00      

     -1       7        -0.14        1.98      

     1       1        1.00        1.00      

     1       7        0.14        0.02      

Polynomial Roots Calculator found no rational roots

Final result :

 7a3 - 7a + 1

6 0
3 years ago
Read 2 more answers
Please help this is do tomorrow
Brums [2.3K]
Okay, then ask an answer! 
6 0
3 years ago
Read 2 more answers
Other questions:
  • Q2) The isoscsles right triangle has 2 of it’s sides 10,10 it’s area is
    13·1 answer
  • Sally's librarian told her that she could increase the size of her vocabulary by spending more time reading. Based on this infor
    15·1 answer
  • the temperature (in degrees celsius) as a function of time (in hours since moon) for a certain day in san jose costa rica is gra
    13·1 answer
  • Find the perimeter of △CDE. Round your answer to the nearest hundredth. The perimeter is about units.
    12·1 answer
  • If (-3)^-5=1/x, what is the value x?
    7·2 answers
  • URGENT!! 100 POINTS, BRAINLIEST AS WELL
    6·2 answers
  • A 5’5 person weight 4.4kg. How many pounds is this
    14·1 answer
  • 3(2y-1)-2(2y)=2. what is the answer to this
    10·2 answers
  • 7 + 9y < -3 (y - 5) + 4
    7·1 answer
  • Which expression gives the best estimate of the product of 281 x 2.16?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!