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2 years ago

9

Suppose that a student has $150 in a band savings account at the start of the school year. Calculate the change in that savings

account during the following year in case it: Growths from monthly deposit of $10 throughout the year

1 answer:

Roman55 [17]2 years ago

4 0

150 12 x 10=120+150= 270

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2√64<br> (+) =8<br> 10-2 <br><br>solve 3√125=? by following steps above

Liono4ka [1.6K]

<em><u>your </u></em><em><u>question:</u></em><em><u> </u></em>

solve 3√125=? by following steps above

<em><u>answer:</u></em>

<em>I'm</em><em> </em><em>not </em><em>sure </em><em>what</em> <em>the </em><em>steps</em><em>"</em><em> </em><em>are </em><em>but </em><em>I </em><em>got </em><em>33.54101966249 </em>

4 0

2 years ago

Two sisters like to compete on their bike rides. Tamara can go 4 mph faster than her sister, Samantha. If it takes Samantha 1 ho

Triss [41]

Answer:

16 mph

Step-by-step explanation:

You should first form equations related to this information

Given,Tamara can go 4 mph faster than her sister, Samantha

Lets take speed to ride a bike for Samantha to be= x mph

The speed to ride a bike for Tamara will be= x+4 mph

To cover a distance of 80 miles, Samantha takes 1 hour longer than Tamara

Introduce the formula for time; time=distance/speed=D/S where D is distance in miles and S is speed in miles per hour

Here time Samantha takes to cover a distance of 80 miles is 1 hour more than that taken by Tamara, hence

<u>Time taken by Samantha</u>

$=\frac{80}{x}$

<u>Time taken by Tamara</u>

$=\frac{80}{4+x}$

<u>Equation for difference in time</u>

$=\frac{80}{x} -\frac{80}{4+x} =1$

Solve the equation for difference in time to get value of x which is samantha speed

$=\frac{80}{x} -\frac{80}{x+4} =1\\\\\\=80(4+x)-80(x)=x(4+x)\\\\\\=320+80x-80x=4x+x^2\\\\\\=x^2+4x-320=0$

Solve quadratic equation by the quadratic formula where a=1,b=4 and c=-320

x=(-b±√b²-4ac)÷2a

x=(-4±√4²-4×1×-320)÷2×1

$x=\frac{-4+/-\sqrt{4^2-4*1*-320} }{2} \\\\\\x=(-4+/-\sqrt{1296} )/2\\\\\\x=\frac{-4+36}{2} =\frac{32}{2} =16$

Samantha speed is 16 mph

6 0

2 years ago

If f(x) = 7(x - 2) + 4(x + 1), what is f(2)? <br><br>O 9 <br>O 10<br>O 11 <br>O 12

Jlenok [28]

I THINK it’s 11 .........

4 0

3 years ago

Read 2 more answers

hoose the correct definition of a sampling distribution. The sampling distribution of a statistic of size n n is the distributio

sergey [27]

Answer:

Correct option:

"The distribution of the statistic in all possible samples of size <em>n</em> from a given population."

Step-by-step explanation:

The sampling distribution is a probability distribution of a sample statistic.

A sample statistic is a numerical value representing a characteristic of a sample. For example, the sample mean represents the mean value of the sample, the sample variance represent the variance of the sample. Both of these values are sample statistic.

A statistic is an unbiased estimator of the parameter value.

That is, the sample mean value can be used to estimate the value of population mean.

If various large samples are taken from a population and the sample statistic value is computed for each of these samples, then the probability distribution of theses sample statistic is known as the sampling distribution.

The mean of the sampling distribution is same as the population mean and the standard deviation of the sampling distribution is known as the standard error.

The correct option is:

"The distribution of the statistic in all possible samples of size <em>n</em> from a given population."

5 0

3 years ago

How many 3/8's are in 6?

GrogVix [38]

Answer:

That is 6 divided by 3/8, better written as

6

--

1

====

3

--

8

Invert the 3/8 and then multiply:

6 8

-- * ---

1 3

Reduce 6/3: 6/3 = 2

Then you have 2(8), or 16 (answer)

8 0

2 years ago

Read 2 more answers