The graph below shows a scatter plot and the line of best fit relating the ages of children and the total number of times they have visited the doctor.Use the line of best fit to estimate the age of a child who has visited the doctor 40 times.

A. 14 years old
B. 13 years old
C. 12 years old
D. 11 years old

Answers

Answer 1

Answer:

Answer:

The correct option is C.

Step-by-step explanation:

The graph below shows a scatter plot and the line of best fit relating the ages of children and the total number of times they have visited the doctor.

If a line passes through two points then the equation of line is

$y-y_1=(y_2-y_1)/(x_2-x_1)(x-x_1)$

From the given graph it is clear that the line of best fit passes through the points (0,0) and (3,10). So, the equation of best fit line is

$y-0=(10-0)/(3-0)(x-0)$

$y=(10)/(3)x$ .... (1)

The equation of best fit line is $y=(10)/(3)x$ . Where, x is age in year and y shows the total number of visits to the doctor.

We need to estimate the age of a child who has visited the doctor 40 times.

Substitute y=40 in equation (1), to find the value of x.

$40=(10)/(3)x$

Multiply both sides by 3.

$120=10x$

Divide both sides by 10.

$12=x$

The value of x is 12. It means the age of a child who has visited the doctor 40 times is 12.

Therefore the correct option is C.

Answer 2

Answer:

The kid is around 12 years old that visits the doctor 40 times

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What is the value of x?

Answers

straight line = 180, so 180-100=80, a triangle = 180, x equals to 180-(70+80) =30, the answer is a

This is actually a relatively simple problem, but because the other angle is missing, it seems complex.

The angle adjacent to the 100 degree outside the triangle is 80 degrees. We know this because it is a supplementary angle, or an angle that, when added along with another angle’s measurement, makes 180 degrees. The line is straight, so the other angle must be 80 degrees to add up with the 100 to make 180 degrees.

Now that we know the other unknown angle, we can use the fact that the sum of angles within a triangle make 180 degrees. The two angles inside the triangle that we know make 150 degrees (80 plus 50), so the final angle ‘x’ must be 30 degrees (180-150=30).

which of the following are reasonable answers for the product of two negatives and a positive? •20 •10 •-20 •-10

Answers

The product of two negatives and one positive will give you a negative number. Take the three numbers; -1, -1, and 1. There are two negatives and one positive.
-1 x -1 x 1 = 1 x 1 = 1 = positive number
So the possible answers are the positive numbers:

20 and 10

Hope this helps :)

The correct answers are:

20 and 10.

Explanation:

Multiplying two negatives results in a positive product. Multiplying this positive product by another positive number will result in a positive answer. This means the only possible answers from our choices are the two positive ones, 20 and 10.

What is the volume of the rectangular prism pictured below?20 yd
5 yd
5 yd
a
500 yd2
О Б
100 yd2
Oc
50 yd?
Od
200 yd?

Answers

Answer:

a- 500yd^3

Step-by-step explanation:

volume=lwh

=5x5x20

=500

brainliest appreciated!!

Each month mrs. li pays her phone company $28 for phone service and$0.07 per minute for long-distance calls. use the expression 28 0.07 m to find the amount she was billed if her long-distance calls totaled 223 minutes.

Answers

To find the amount Mrs. Li was billed for her long-distance calls totaling 223 minutes, you can use the expression:

28 + 0.07 * 223

First, calculate the cost of the long-distance calls:

0.07 * 223 = 15.61

Now, add this cost to the fixed monthly charge:

28 + 15.61 = 43.61

So, Mrs. Li was billed $43.61 for her phone service with 223 minutes of long-distance calls.

A triangle has two sides of length 5 and 12. what value could the length of the third side be? More then one can be correct.a.7
b.5
c.19
d.17
e.11
f.9

Answers

$Condition\ for\ existing\ triangle\n\n a,b,c- sides\ of\ triangle\n\n a+b>c\na+c>b\nb+c>a\n 5+12=17\n\n a)\ 7<5+12,\ 5+7>12 \ , 7+12>5 \n b)\ 5<5+12,\ \ 5+5\not>12\nc)19\not<5+12\nd)17\not<5+12\ne)11<12+5,\ \ 11+5>12,\ 11+12>5 \nf)9<12+5,\ \9+5>12\ \ 12+9>5 \n\Third \side\ can\ be\ a,e,f$

Which expression is equivalent to 56 + 21?07(49 + 14)
8(7 + 21)
8(48 + 13)
07(8 + 3)

Answers

Answer:

07(8 + 3) is the right answer

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