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Stella [2.4K]
3 years ago
6

the area of a rectangular book cover is 4x^2-6x-40. The width of the book cover is 2x-8. what is the length?

Mathematics
1 answer:
lyudmila [28]3 years ago
6 0
Answer: 
2x+5

<span>4x^2-6x-40                        factor
2(2x+5)(x-4)                     multiply 
(2x+5)(2x-8) = area
2x+5 = length

</span>
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5w - w/x when w=6 and x =2
sashaice [31]

Answer:

27

Step-by-step explanation:

w = 6

x = 2

5w

= 5 x 6

= 30

w / x

= 6 / 2

= 3

5w - w / x

= 30 - 3

= 27

6 0
2 years ago
What is f(5) if f(1) = 3.2 and f(x + 1) =5over2 (f(x))?
Lubov Fominskaja [6]
F(5) would be 16. because f(1) is only 3.2 so if you multiply 3.2 x 5 you will get 16
6 0
3 years ago
Multiply and simplify. 2x4yx⋅6xy2z3
OLEGan [10]

Answer:

The given expression 2x^4yx \times 6xy^2z^3   on multiplying  is 12x^6y^3z^3

Step-by-step explanation:

Consider the given two expressions 2x^4yx and 6xy^2z^3

We have multiply both expressions,

2x^4yx \times 6xy^2z^3

To multiply two terms first multiply constant numbers that is 6 × 2 = 12

For x , y and z apply property of exponent,

x^a\cdot x^b=x^{a+b}

Then power of x together will be,

x^4\cdot x\cdot x=x^{4+1+1}=x^6

Similarly for y powers,

y \cdot y^2=y^{1+2}=y^3

Since first term do not have any expression for z so it will remain same.

Thus, the given expression  on multiplying become,

2x^4yx \times 6xy^2z^3 is 12x^6y^3z^3




7 0
3 years ago
Read 2 more answers
Diane got a prepaid debit card with $25 on it. For her first purchase with the card, she bought some bulk ribbon at a craft stor
lorasvet [3.4K]

Answer:

48

Step-by-step explanation:

you can do 25 minus 18.76 then you get 6.24 then divide that by .13 and you get 48

3 0
2 years ago
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Shalnov [3]
Let's figure this out. Step by step:

P /  6 = 9

P = 6(9)

P = 54 is your answer.

I hope this helps :)
8 0
3 years ago
Read 2 more answers
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