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adoni [48]
3 years ago
13

Irina predicted that she would sell 75 books, but she actually sold 95 books. Which expression would find the percent error?

Mathematics
2 answers:
CaHeK987 [17]3 years ago
4 0
Percent error = |actual error - expected error/ expected error| * 100%
(|75-95|)/95 = 0.21
0.21 * 100% = 21% error
dolphi86 [110]3 years ago
3 0

Answer:

d

Step-by-step explanation:

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Any help with an explanation would be appreciated!
Lilit [14]

Problem 1

We'll use the product rule to say

h(x) = f(x)*g(x)

h ' (x) = f ' (x)*g(x) + f(x)*g ' (x)

Then plug in x = 2 and use the table to fill in the rest

h ' (x) = f ' (x)*g(x) + f(x)*g ' (x)

h ' (2) = f ' (2)*g(2) + f(2)*g ' (2)

h ' (2) = 2*3 + 2*4

h ' (2) = 6 + 8

h ' (2) = 14

<h3>Answer: 14</h3>

============================================================

Problem 2

Now we'll use the quotient rule

h(x) = \frac{f(x)}{g(x)}\\\\h'(x) = \frac{f'(x)*g(x)-f(x)*g'(x)}{(g(x))^2}\\\\h'(2) = \frac{f'(2)*g(2)-f(2)*g'(2)}{(g(2))^2}\\\\h'(2) = \frac{2*3-2*4}{(3)^2}\\\\h'(2) = \frac{6-8}{9}\\\\h'(2) = -\frac{2}{9}\\\\

<h3>Answer:  -2/9</h3>

============================================================

Problem 3

Use the chain rule

h(x) = f(g(x))\\\\h'(x) = f'(g(x))*g'(x)\\\\h'(2) = f'(g(2))*g'(2)\\\\h'(2) = f'(3)*g'(2)\\\\h'(2) = 3*4\\\\h'(2) = 12\\\\

<h3>Answer:  12</h3>
5 0
2 years ago
Evaluate the function rule for the given value f(x)=15x for x=3
lesya692 [45]

Answer:

f(3) = 45

Step-by-step explanation:

Substitute x = 3 into f(x) and evaluate

f(3) = 15 × 3 = 45

7 0
3 years ago
Read 2 more answers
A square has a side length of 5x and a perimeter of 60.<br> What is the value of x?
kozerog [31]

Answer:

x=3

Step-by-step explanation:

60/4=15\\15/5=3\\x=3

7 0
3 years ago
Dose anyone have the answer to this question
Anuta_ua [19.1K]

Answer: (A) SAS  (B) No  (C) SSS  (D) No

<u>Step-by-step explanation:</u>

A) ET ≅ MT, ∠T ≅ ∠T, TA ≅ TA  ⇒  Side-Angle-Side

B) top and base are congruent, diagonal is congruent to itself, but there is no way to prove that two angles are congruent without knowing if either of the sides are parallel.

C) JU ≅ JE, UN ≅ EN, JN ≅ JN ⇒ Side-Side-Side

D) angle-angle-angle only proves similarity, not congruency

7 0
3 years ago
9234 divided by 52 but what is the remainder
HACTEHA [7]

Answer:

In a decimal it would be 177.577

In a fraction it would be 177  577/1000

5 0
3 years ago
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