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2 years ago

In what real-world situations would you want to round a number?

Mathematics

1 answer:

solmaris [256]2 years ago

7 0

Taxes,paying for things, estimating how much money you have or will get or pay

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Which point is on the graph of f(x)=2x= 2.5%?

katovenus [111]

Answer: The parabola has its concavity downwards, so we need a function in the model:

With a negative value of 'a'

The vertex is (0,0), so we have that:

The x-coordinate of the vertex is given by the equation:

So we have a function in the model:

With a < 0

The only option with this format is B:

Step-by-step explanation:

4 0

2 years ago

What is the value of log 43? Use the calculator. Round your answer to the nearest tenth.

Bad White [126]

Answer:

The value of log 43is 1.633

Step-by-step explanation:

Explanation:

Suppose you know that:

$\begin{array}{l}{\log 2 \approx 0.30103} \\{\log 3 \approx 0.47712}\end{array}$

Then note that:

$43=\frac{129}{3} \approx \frac{128}{3}=\frac{2^{7}}{3}$

$\log 43 \approx \log \left(\frac{2^{7}}{3}\right)=7 \log 2-\log 3 \approx 7 \cdot 0.30103-0.47712=1.63009$

We know that the error is approximately:

$\log \left(\frac{129}{128}\right)=\log 1.0078125=\frac{\ln 1.0078125}{\ln 10} \approx 0.00782 .3=0.0034$

So we can confidently give the approximation:

$\log 43 \approx 1.633$

6 0

2 years ago

The value of a dirtbike decreases by 15% each year if you purchase this dirtbike today for $500 to the nearest dollar how much w

ArbitrLikvidat [17]

You want to find 15% of $500; to do this, multiply $500 by 0.15 (75) and you got your answer $75

4 0

3 years ago

Mae Ling earns a salary of $365 pulse an 8.0% commission on sales at a gift shop. How much would she make in a week if she sold

sergeinik [125]

Answer:$360

Step-by-step explanation: 8.0% -- 0.08

$4500 x 0.08 = 360

Hope this helps :)

3 0

2 years ago

In circle X chords AB and CD are congruent and AB is 9 units from X. Find the distance from CD to X. I need help with the steps

katrin [286]

Given: Circle X, Chords AB and CD, AB ≅ CD, distance from AB to X is 9.

1. Circle X
1. Given
2. AB and CD are chords of circle X
2. Given
3. AB ≅ CD
3. Given
4. AB is 9 units from X.
4. Given
(You can combine some of these givens into one step if you want)
5. AB and CD are equidistant from X.
5. When ≅ chords are in the same circle, they are equidistant from the center.
6. CD is 9 units from X.
6. Substitution Property ■

Refer to the attached image if you need to.

4 0

3 years ago