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AnnyKZ [126]
3 years ago
15

James estimated the total cost of groceries to be $50. The actual cost is$65. What is the percent error. Round to nearest whole

percent.
Mathematics
1 answer:
vampirchik [111]3 years ago
8 0

Answer:

Step-by-step explanation:

15%

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The value of y varies directly with x. When y=80, x=1/2. What is the value of y when x is 2 1/4?
spin [16.1K]
Using the formula y = kx 
80 = .5k 
k = 160
y = 160*2.25
y = 360
4 0
3 years ago
Please help me i beg of u due today
Zepler [3.9K]

Answer:

110

Step-by-step explanation:

80 + 30

= 110

7 0
3 years ago
Find the second derivative at the point (2,2), given the function below. 2x^4=4y^3
Bogdan [553]

The second derivative at the point (2,2) is 34/9

<u>Explanation:</u>

<u></u>

2x⁴ = 4y³

2x⁴ - 4y³ = 0

We first need to find dy/dx and then d²y/dx²

On differentiating the equation in terms of x

dy/dx = d(2x⁴ - 4y³) / dx

We get,

dy/dx = 2x³/3y²

On differentiating dy/dx we get,

d²y/dx² = 2x²/y² + 8x⁶/9y⁵

\frac{d^2y}{dx^2} = \frac{2 X 2^2}{2^2} + \frac{8 X 2^6}{9 X 2^5}\\  \\\frac{d^2y}{dx^2} = 2 + \frac{16}{9}\\  \\

d²y/dx² = 34/9

Therefore, the second derivative at the point (2,2) is 34/9

7 0
3 years ago
Will the sum of 2x3 + x2 - 4 and -5x² - 6x? be a polynomial?<br> yes<br> no
Eva8 [605]

Answer:

Yes

Step-by-step explanation:

Since we are adding two polynomials

The sum will also be polynomial

4 0
2 years ago
What is the slope of the line that goes through (-5,5) and (5,-7)
ludmilkaskok [199]

Answer:

A. -1/5

Step-by-step explanation:

-7-(-5) /5-(-5)

= -7+5 / 5+5

= -2/10

-1/5 option A

8 0
3 years ago
Read 2 more answers
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