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Nesterboy [21]
3 years ago
9

Let n = 13. What is the value of 25 + 2n?

Mathematics
2 answers:
Lostsunrise [7]3 years ago
8 0
The answer for this is 51
25 + 2•13
25 + 26
51
maxonik [38]3 years ago
4 0
So you do 2 times 13 cause your substituting the N.than add 25.i got 51 but you can resolve to make sure im right.
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All questions are about this system of equations:
sertanlavr [38]
If we are eliminating x, we would multiply the 2nd equation by -5

5x + 18y = 23
x + 3y = 2....multiply by -5
-----------------
5x + 18y = 23
-5x - 15y = - 10 (result of multiplying by -5)
----------------add
0 + 3y = 13.....bye-bye x :)

6 0
3 years ago
1-1 Relations and Functions Marcus drives 32 miles to work each day. He records the number of minutes it takes him to drive and
Korvikt [17]

Answer:

A. <em>[0, 65]</em>

Step-by-step explanation:

Given that

Distance that Marcus drives every day = 32 miles.

The table having average speed as input and time taken as output is shown below in the table format:

\begin{center}\begin{tabular}{ c c}Speed(mph) & Time(minutes) \\ 60 & 32  \\  45 & 43  \\   55 & 35  \\ 50 & 38  \\ 62 & 31   \\\end{tabular}\end{center}

To find:

The domain that includes all possible average speeds using interval notation = ?

Solution:

First of all, let us understand what is a domain of a function.

Domain of a function is set of valid input values that can be provided to the function so that it has a valid output.

If a function is written as:

y=f(x) then values of x are the input given to the function.

In the given question statement, we are given that maximum Average speed attained by Marcus is 65 miles per hour.

That means domain has a maximum value of 65.

Let us learn something about interval notation.

( or ) means the value is not inclusive.

[ or ] means the value is inclusive.

Here 65 will be inclusive.

On the left side of comma, lower value is written and on the right side of comma, larger value is written.

So, domain for the current situation will be:

<em>[0, 65]</em>

<em></em>

0 is taken as the minimum value of domain here, because average speed value can not be negative.

This interval will contain all the possible values of input (average speed) as shown in the above table of values.

8 0
3 years ago
A pile of cards has 3 black cards and 5 red cards. Alex picks 6 cards out of the pile, without replacement. Which of the followi
scoray [572]

Answer:

)Alex picks more red cards than black cards,

Step-by-step explanation:

4 0
2 years ago
A bakery sold 115 cupcakes in one day. The head baker predicted he would sell 95 cupcakes that day. What was the percent error o
Brut [27]
It was about 17.4% 
======================================================================

% error=
actual value-estimated value 
Then divide that by actual value
5 0
3 years ago
Charlemagne’s column covers the first 12 miles in 4 hours. He then increased the speed by 2 miles per hour. If the total distanc
Mashutka [201]

Answer:

12 miles in 4 hours is 3 mph

52-12=40 miles left

40 miles at 5 mph would take 8 hours

8+4=10

it took 10 hours to finish the trip.


8 0
3 years ago
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