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nikitadnepr [17]
3 years ago
6

20 points!!!

Mathematics
2 answers:
Nikolay [14]3 years ago
4 0
<h2>Answer:</h2>

Hence, the number of miles a person who drives for 48 minutes expect to travel is:

                               42 miles.

<h2>Step-by-step explanation:</h2>

We are given a scatter plot such that the data points:

(15, 10), (25, 20), (30, 22), (40, 32), (55, 53), (60, 55)

are plotted in it.

and we are given a equation of the trend line of the scatter plot as:

y=1.04x-7.15

where x represents the time and y represents the distance traveled in miles.

Now, we are asked to find the miles a person would drive in 48 minutes.

i.e. we are asked to find the value of y when x=48

Hence, we put x=48 in equation (1) to get:

y=1.04\times 48-7.15\\\\i.e.\\\\y=42.77

which is approximately equal to 42

Stella [2.4K]3 years ago
3 0
I think the answer is 42 miles 
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Ms. Lynch has 21 coins in nickels and dimes.
bulgar [2K]

Answer:

Step-by-step explanation:So we know x + y = 21 and 5x +10y = 165 We line them up in columns    x +   y =   21  5x +10y = 165 To eliminate the x variable, I'll multiply every element in the 1st equation by -5. -5x + -5y = -105  5x + 10y =  165 Now we combine (add) the equations, which eliminates x altogether.  5y = 60   ...   y = 12 From there, x + 12 = 21  ...  x = 21-12  ...  x = 9 You should double check.  Do 9 nickles and 12 dimes equal $1.65? A very important thing to remember using this method is to do the same thing to each element in the equation that you change! I hope that helps.

4 0
2 years ago
Given f(x) = x^2-3 and g(x)=x+2/x. Find (g°f)(4)
goblinko [34]

Answer:

15/13

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A delivery truck is transporting boxes of two sizes large and small. The combined weight of a large box and a small box is 80 po
Liula [17]

Answer:

small=15 large=40

Step-by-step explanation:

x=large box

y=small box

55 = x + y

 

50x + 55y = 2825

 

50x + 55( 55 - x) = 2825

 

50x + 3025 - 55x = 2825

 

0 = 55x - 50 x + 2825 - 3025

 

0 = 5x - 200

 

200 = 5x

 

x=40

 

y = 15

7 0
3 years ago
T
ad-work [718]

Answer:

Present age

Son: 15

Father: 45

Step-by-step explanation:

Remark

Thank you for the translation. Without it, the problem would be impossible -- at least for me.

Givens

Let the present age of the father = x

Let the present age of the son = y

Solution

x + y = 60

How many years will pass? You could say it's z.

x + z = y                          When z years pass, the son will be his father's present age.

x + z + y + z = 120          when z is added to both their current ages, the result is 120                   Collect like terms

       

x + y + 2z = 120            

<u>x + y         = 60  </u>            Subtract The very first equation

2z = 60                          Divide by 2

z = 60/2                         30 years have passed.

z = 30

x + z = y

x + 30 = y                       Substitute x + 30 for the present y value (the father).

x + x + 30 = 60

2x = 30

x = 15

x + y = 60

15 + y = 60

y = 60 - 15

y = 45

So the son's age right now is 15

The father's age right now is 45

8 0
2 years ago
If there is a group of 7 people ordering pizza. If each person gets 7 slices and each pizza has 9 slices, how many pizzas should
kirza4 [7]

Answer:

6 pizzas

Step-by-step explanation:

7 people × 7 slices each

= 49 slices in total

If each pizza has 9 slices

to get 49 slices ....we divide 49 by 9 to get 5.4

And in order to get a whole we must make it 6 pizzas because 5 is not enough and 6 is more than enough

4 0
2 years ago
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