Zina goes to the store to buy markers. An 8-pack of markers costs $10.99, but it does not have the color that she wants. A 12-pa
1 answer:
Using proportions, it is found that the cost of the 12-pack of markers, in dollars, is of:
- This question is solved by <em>proportions</em>, using a rule of three.
- The cost of a 8-pack of markers is of $10.99. What is the cost of a 12-pack?
The <em>rule of three</em> is:
8 pack - $10.99
12-pack - $C
Applying cross multiplication:
To learn more about proportions, you can take a look at brainly.com/question/24372153
You might be interested in
Answer:
Step-by-step explanation:
The angle 42x+1 is the inscribed angle of Arc WX. This means Arc WX is twice of 42x+1.
We can add up that and the other arcs to 360.
Plug in 2 for WX.
Answer:
Therefore the required polynomial is
M(x)=0.83(x³+4x²+16x+64)
Step-by-step explanation:
Given that M is a polynomial of degree 3.
So, it has three zeros.
Let the polynomial be
M(x) =a(x-p)(x-q)(x-r)
The two zeros of the polynomial are -4 and 4i.
Since 4i is a complex number. Then the conjugate of 4i is also a zero of the polynomial i.e -4i.
Then,
M(x)= a{x-(-4)}(x-4i){x-(-4i)}
=a(x+4)(x-4i)(x+4i)
=a(x+4){x²-(4i)²} [ applying the formula (a+b)(a-b)=a²-b²]
=a(x+4)(x²-16i²)
=a(x+4)(x²+16) [∵i² = -1]
=a(x³+4x²+16x+64)
Again given that M(0)= 53.12 . Putting x=0 in the polynomial
53.12 =a(0+4.0+16.0+64)
=0.83
Therefore the required polynomial is
M(x)=0.83(x³+4x²+16x+64)