All categories

3 years ago

Mary is n years old. What expression represents her age 5 years from now? 5 years ago?

Mathematics

1 answer:

MissTica3 years ago

3 0

Answer:

After 5 years : ( n + 5 ) years !

Before 5 years : ( n - 5 )

Step-by-step explanation:

Given the age of Mary is  n years old

After 5 years , She must be 5 years more from now so,

Her age will be  ( n + 5 ) years  after 5 years from now !

Also, 5 years ago  she must be 5 years less than from now ,

So, her age 5 years ago was ( n - 5 ) years ! 

You might be interested in

PLZZ HELP!! I just dont understand it correctly

levacccp [35]

Answer:

Aidan can expect to save about $17.63 each week.

Step-by-step explanation:

We have an equation: y = 17.63x + 27.52. This equation is in slope-intercept form. In slope-intercept form, the value before the x (in this case, 17.63) is the slope, and the value added to the slope (in this case, 27.52) is the y-intercept.

Right now, though, we only need to focus on the slope. The slope represents a change in y over a change in x. Our y-values represent total amount saved, and our x-values represent number of weeks. Y over x... so, total amount saved over a certain number of weeks.

The first answer seems to match this the best. Remember that the slope represents how much is saved per week, and our slope is 17.63. So, the first answer (Aidan can expect to save about $17.63 each week) is correct. If you have any more questions or that was confusing at all, let me know! :)

3 0

3 years ago

Please help hard math lots of points

avanturin [10]

Answer:

C- y=2|x+2|

Step-by-step explanation:

When the number is inside the absolute value bars, the value shifts- so a positive two would move left two, and a negative two would move right two. If the number was outside of the equation, the shape would move up or down- a positive two would move the shape up two, and a negative two would move the graph down two.

8 0

3 years ago

Read 2 more answers

Concept Recall #2: (6.RP.A.1)

Bas_tet [7]

Answer:

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

-52 times the difference a number and 97 is equal to the number plus 39

VLD [36.1K]

-52 (x - 97) = x + 39

-52x + 5,044 = x + 39
+52x +52x

5,044 = 53x + 39
-39 - 39

5,005 = 53x
____ ____
53x 53x

94.43 = x

8 0

3 years ago

A survey conducted in July 2015 asked a random sample of American adults whether they had ever used online dating (either an onl

Natasha2012 [34]

Answer:

The 99% confidence interval is (0.0787, 0.1613).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence interval 1-\alpha, we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

Z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

The survey included 411 adults between the ages of 55 and 64, and 50 of them said that they had used online dating. This means that $n = 411, \pi = \frac{50}{411} = 0.12$