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ikadub [295]
3 years ago
6

20 POINTS FOR THIS!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
Sloan [31]3 years ago
7 0

Answer:

b = 13

Step-by-step explanation:

the value of the discount is a constant, while the total cost of the books is a variable because it depends of the purchase

We can write this equation

5b - 7 = 58

Solve it

1) add 7 at both members

5b -7 + 7 = 58 + 7

5b = 65

2) divide both membera by 5

b = 13

LenaWriter [7]3 years ago
4 0
B=13 add 7 to both numbers then divide by 5
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What’s the answer? Please Please Help me
OverLord2011 [107]
The answer is 155 . 234-79=155 !
5 0
3 years ago
Read 2 more answers
the polynomial ky^3+3y^2-3 and 2y^3-5y+k when divided by (y-5) leave the same remainder in each case. Find the value of k.
marshall27 [118]

Answer:

k=\frac{153}{124}

Step-by-step explanation:

According to the Remainder Theorem; when P(y) is divided by y-a, the remainder is p(a).

The first polynomial is :

p(y)=ky^3+3y^2-3

When p(y) is divided by y-5, the remainder is

p(5)=k(5)^3+3(5)^2-3

p(5)=125k+75-3

p(5)=125k+72

When the second polynomial:

m(y)= 2y^3-5y+k is divided by y-5.

The remainder is;

m(5)= 2(5)^3-5(5)+k

m(5)= 225+k

The two remainders are equal;

\implies 125k+72=225+k

\implies 125k-k=225-72

\implies 124k=153

k=\frac{153}{124}

3 0
3 years ago
What is the domain of this graph?
jolli1 [7]

Answer:

B 0 ≤x≤9

Step-by-step explanation:

The domain is the input values of the graph.  In this graph it is the values that the time variable takes.

Time can take 0 seconds to 9 seconds

0 ≤x≤9

8 0
3 years ago
31 7/8 - 2/7 = what<br><br> please i really need the answers for my school
Fittoniya [83]

Answer:

9/2

Step-by-step explanation:

8 0
3 years ago
What is the correct answer to my question ?
dangina [55]

Answer:

13/17

Step-by-step explanation:

5 0
3 years ago
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