All categories

2 years ago

Anna put $2 500 in a bank and left it for two years. At the end of the 2 years, she realized that she had $2.700 in her

Mathematics

1 answer:

user100 [1]2 years ago

4 0

Answer:

$ 100 a year

Step-by-step explanation:

You might be interested in

Three machines are used to produce nails. the table displays the total number of nails produced by the three machines over diffe

mamaluj [8]

Answer:

Step-by-step explanation

they answer would be a whole number because you are multiplying by one thousand

6 0

2 years ago

47:47

BARSIC [14]

Sorry, I'm not sure.

I would suggest asking a trusted adult or teacher or redoing the lesson. Cheating isn't a good path: you will not do well in the future if you always search for answers on the internet.

3 0

1 year ago

If the scale factor of sides is 3, then the scale factor of area is ___ and the scale factor of

snow_tiger [21]

Answer:

Here is an example: if we have a rectangle that has a length 3 and a height of 4 and the scale drawing with a scale factor of 2, how many times bigger is the scale drawings area? The original shape is 3 by 4 so we multiply those to find the area of 12 square units.

5 0

1 year ago

Read 2 more answers

Rewrite the following in the form log(c).<br> log(10) – log(5)

Svet_ta [14]

Answer:

log(2)

Step-by-step explanation:

In order to combine log(10) and log(5), you need to look at the sign that's combining them. In this example, it is a subtraction sign. When two logs are being subtracting from each other, it's the same as dividing the two. You would rewrite it like this:

log(10/5)

You would then solve 10/5, and get 2. You would rewrite the log as:

log(2)

3 0

2 years ago

The waking time of a student under common conditions is normally distributed with mean of 30 hours and a standard deviation of 5

Elina [12.6K]

Answer:

If the walking time is greater than or equal to 38.225 hours, than it exceeds 95% probability that is lie in top 5%.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 30 hours

Standard Deviation, σ = 5 hours

We are given that the distribution of waking time is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

We have to find the value of x such that the probability is 0.95

$P( X < x) = P( z < \displaystyle\frac{x - 30}{5})=0.95$

Calculation the value from standard normal z table, we have,

$\displaystyle\frac{x - 30}{5} = 1.645\\\\x = 38.225$

Thus, if the walking time is greater than or equal to 38.225 hours, than it exceeds 95% probability that is lie in top 5%.

4 0

3 years ago