3 years ago

Multiply using mental math find the product.tell which strategy you used.

Mathematics

1 answer:

andreyandreev [35.5K]3 years ago

3 0

Well nine times 199 is 1,791but im not sure if thats what its asking

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Diego pours 8 ounces of water from a full bottle of 36 ounces. What is the percent of decrease of water in the bottle?

Natali5045456 [20]

Answer:

The answer is 22%.

Step-by-step explanation:

All you need to do to figure this out is to divide 36 by 8.

8/36=.222222

Hope this helps!

4 0

3 years ago

If tanisha has $100 to invest at 8% annum compounded monthly, how long will it be before she has $150?

marissa [1.9K]

An exponential behavior can be observed.

Let x be the number of years she has to wait.

100((1+0.08/12)^12x) = 150

Now solve for x.

log base 1.08/12 of 1.5 = 61.02 approx

12x=61.02

x=5.09 years

4 0

3 years ago

The hourly wages of a sample of 130 system analysts are given below.

atroni [7]

Answer: b. 30%

Step-by-step explanation:

A measure of relative variability is known as coefficient of variation. It is the ratio of the standard deviation to the mean.

i.e. $CV=\dfrac{\sigma}{\mu}$

Given: mean = $\mu=90$

Variance = $\sigma^2 = 729$

$\sigma=\sqrt{729}=27$

Now, $CV=\dfrac{27}{90}=0.3$

in percent , $CV= 0.3\times100\%= 30\%$

Hence, correct option is b. 30%.

8 0

3 years ago

I will mark brainiest please help me im stuck on this questionnnn

Bess [88]

I guess It would be B

5 0

3 years ago

What is the costant of proportionality in the equation y=2.5x

andrew-mc [135]

Answer:

$k=2.5$

Step-by-step explanation:

$y \propto x$

$y=kx$

$k$ is the proportionality constant.

$y=2.5x$

The $y$ is the independent variable and $x$ is the dependent variable.

The proportionality constant is $2.5$ .

8 0

3 years ago