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17 days ago

1. Pedro had $14.90 in his wallet. He spent $1.25 on a drink. How much does he have left?

2 answers:

5 0

(a) When rounded, 14.90 becomes 15, and 1.25 rounds to 1, so 15-1 results in $14.
(b) My estimate may be higher as I had to round the larger number up while the smaller number was rounded down, creating a greater difference between the estimate and the actual amount.
(c) The computation yields 14.90-1.25=13.65, thus Pedro has $13.65 remaining in his wallet. The difference between the estimate and the actual figure is 14-13.65=0.35, indicating a $0.35 discrepancy between the estimate and the actual remaining amount in Pedro's wallet.

babunello [11.8K]17 days ago

3 0

Your final answer would be 13.60 and high, I hope this is useful

Further clarification

Trigonometry is a branch of math focused on the connections between the sides and angles of triangles.

Considering special angles of trigonometric functions, for instance

$\displaystyle sin~0=0\\\\cos~30=\frac{1}{2}\sqrt{3}\\\\tan~45=1\\\\sec~45=\sqrt{2}\\\\etc.$

In the equation y = cos⁻¹ 0, the value of y can be derived as follows:

y = cos⁻¹0

y = arc cos 0

cos y = 0

Thus, the resulting value of y:

$\displaystyle \frac{\pi }{2},\frac{3}{2}\pi,\frac{5}{2}\pi, etc$

Alternatively, it can be expressed as:

$\displaystyle y=\frac{\pi }{2} (2n-1)$ ⇒ y: arithmetic sequence

So there are infinite solutions for y

Learn more

trigonometric identities

Keywords: trigonometric, infinite values,arithmetic sequence

3 0

27 days ago

Read 2 more answers

The equation for the line of best fit is f(x) ≈ 1.8x − 5.4 for the set of values in the table. Using the equation for the line o

tester [12383]

1.8x-5.4=30 add 5.4 to each side

1.8x=35.4 divide every side by 1.8

x=354/18

x≈19.67

Thus, 20 would serve as a solid approximation for x.

6 0

16 days ago

Read 2 more answers

The perimeter of a scalene triangle is 14.5 cm. The longest side is twice that of the shortest side. Which equation can be used

babunello [11817]

Let x = 6.2
Define y as half of x: y = 0.5x
Calculate y: y = 0.5 × 6.2 = 3.1
Calculate z by subtracting x and y from 14.5: z = 14.5 - 6.2 - 3.1 = 5.2
Each variable corresponds to a triangle side

8 0

1 month ago

Question 1(Multiple Choice Worth 2 points)

babunello [11817]

Here are 3 questions with their respective answers.

1) Find

$\lim_{x \to \ 2^+} f(x)$

Answer: 4.

Explanation:

This expression indicates the limit as the function f(x) approaches 2 from the right side.

You should apply the function (the line) from the right side of 2 and get as close to x = 2 as you can.

That line has an open circle at y = 4, which is the limit we are looking for.

2) Analyze the graph to see if the limit exists.

Answer:

$\lim_{x \to \ 2^-} f(x) = 3$

$\lim_{x \to \ 2^+} f(x)=-3$

To find each limit, utilize the function approaching from the direction of x.

It's important to note that since the two limits differ, it is concluded that the limit of the function as x approaches 2 does not exist.

3)
Answer: -1

$\lim_{x \to \ 3^-} f(x) = -1$

To determine the limit as the function approaches 3 from the left, follow the line ending with an open circle at (3, -1).

Hence, the limit is -1.

5 0

1 month ago

Read 2 more answers