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nalin [4]
3 years ago
8

Penelope is saving up to buy a new bicycle. She already has $65 and can save an

Mathematics
1 answer:
alisha [4.7K]3 years ago
7 0

Answer:

she would have $85 in 4 weeks

Step-by-step explanation:

5*4=20

20+65=$85

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Let f(x)=2.912345x^2+3.131579x-0.099999
Rudiy27
A.) Integers are positive and negative counting numbers. So, in order to find the integer coefficients, round off the coefficients in the equation to the nearest whole number. The function for g(x) is:

g(x) = 3x²+3x

B.) Substitute x=4 to the two functions.

f(x) = 2.912345x²<span>+3.131579x-0.099999
</span>f(4) = 2.912345(4)²+3.131579(4)-0.099999
f(4) = 59.023837

g(x) = 3x²+3x
g(4) = 3(4)²+3(4)
g(4) = 60

C.) The percentage error is equal to:

Percentage error = |g(4) - f(4)|/f(4)  * 100
Percentage error = |60 - 59.023837|/59.023837  * 100
Percentage error = 1.65%

D.) If x is a large number, for example x=10 or x=20, then g(x) would be an overestimate. This is because the value of x is raised to the power of 2. So, as the x increases, the corresponding function would increase exponentially. Even at x=4, g(x) is already an overestimate. What more for larger values of x? That means that the gap from the true answer f(x) would increase.
5 0
3 years ago
Find the value of p if x3 ÷ xp = x5
Soloha48 [4]

Let's solve for p.

x3xp=x5

Step 1: Divide both sides by x^2.

px2x2=x5x2

p=x3

Answer:

p=x3

4 0
3 years ago
!!!!!!!!50 POINTS. PLEASE HELP ASAP!!!!!!!
WARRIOR [948]

Answer:

x^6 + 2x^3  -2x^2 -8x + 4

Step-by-step explanation:

Okay, so we need to multiply f and g.

Since you said asap, I won't do the long explanation...

       x3        -4x       2

x2    x6       -4x2     2x2

2     2x3      -8x      4

x^6 + 2x^3  -2x^2 -8x + 4

3 0
3 years ago
What is the answer to this how to work it
Anna007 [38]

9514 1404 393

Answer:

  (A)  -7

Step-by-step explanation:

The function is continuous if you can draw its graph without lifting your pencil. In this case, that means each of the piecewise function definitions must have the same value at x=3.

  x^2 +2 = 6x +k  . . . . . must be true at x=3

  3^2 +2 = 6(3) +k . . . . substitute 3 for x

  9 +2 -18 = k . . . . . . . . subtract 18

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3 years ago
Find the area of a circle with a diameter of 6. Either enter an exact answer in terms of pi or use 3.14 for pi
ankoles [38]
So it gives you the diameter but you need the radius of the circle to find the area so to find the radius you just divide the diameter by two. the formula for the area of a circle is A=pi*r^2 so you just multiply 3.14 by 3 squared so you just put it in the calculator as A=3.14*3^2 and you get 28.26 hope this helped
4 0
3 years ago
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