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Allisa [31]
3 years ago
15

A sapling that started out 11 inches tall grew 2 inches per year. How old was the sapling when it was 45 inches tall? Write and

solve an equation to find the answer.
Mathematics
2 answers:
aliina [53]3 years ago
7 0

Answer: I am going tot give you an example for this because I don’t like giving straight up answers ok?

Step-by-step explanation:

Lets use this conversion factor:

4 inches = 1 year

Let's find the year at 5 feet (60 inches) using the conversion factor. Set up a proportion.

4 / 60 = 1 / x

Cross multiply.

4x = 60

x = 15

At 15 years, the height is 60 inches.

We can use these as points.

x = time in years

y = height in inches

Point 1 = (1, 4)

Point 2 = (15, 60)

By looking at the points, we know that as the x values increase, so does the y values. Now the relation between the x and y values of each point is that y is 4 times as that of x. Therefore, we can establish an equation.

y = 4x

This will be the model to use to find the height in 30 years.

damaskus [11]3 years ago
3 0

Answer:

17 years old

Step-by-step explanation:

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Find the slope of the line graphed in the diagram and choose the correct answer from the choices below. The two intercepts are (
balandron [24]

Answer:

6/5

Step-by-step explanation:

Using the given points (0, 3) and (-2.5, 0) you can substitute it into the slope formula which is y2-y1/x2-x1

In this case, 3 in the first parenthesis is the y2, while 0 in the second parenthesis set is 0.

so,

= substitute in the numbers for the slope formula: 3-0/0-(-2.5)

= reduce the fraction and you get: 1.2

= convert to simplified fraction to get: 6/5

Hope this helps, I did this on a quiz and got the answer right.

3 0
3 years ago
2. A teacher asked his class of 20 students, "What is your age? Their responses are shown in the dot plot below.
Karolina [17]

Answer:

Yes, average does represent the centre of this data.

Average = 15.9

Step-by-step explanation:

As this question is not complete and not correctly written. Let's try to find an answer for this question.

Total number of Students = 20 = n

and we are given this data:

14, 15, 17, 18, 16.

which is just five entries and total number of students are 20. 15 entries are missing in this questions. So, let's add our own values into this question.

New set of entries for 20 students.

1. 14

2. 15

3. 17

4. 18

5. 16

6. 19

7. 17

8. 16

9. 17

10. 17

11. 15

12. 20

13. 14

14. 17

15. 18

16. 19

17. 13

18. 20

19. 17

20. 16

So, let's calculate the average of these numbers.

Average = Sum of all entries/ Total number of entries.

Average = 318/20

Average = 15.9

So, the average age of all the students of class is 15.9.

Let's calculate median:

For median , data must be arranged in a order from least to greatest number. Median is a number from that data which is at half way. In case of odd numbers, it is easy to identify median because there is only one number. and in case of even numbers, median is the average of the two middle numbers. So, here we have even numbers and median is the average of two middle numbers = 17 + 17/2 = 17

Median = 17

Yes, average does represent the centre of this data.

8 0
3 years ago
Read 2 more answers
The members of the boosters organization at your high school bought new balls for the school . They spent $ 22.00 per basketball
azamat
The askser is 283828288288 god it’s da key bro
6 0
3 years ago
Which absolute value function, when graphed, represents the parent function, f(x) = |x|, reflected over the x-axis?
Gala2k [10]
Reflecting the point (x, y) over the x-axis transforms it to the point (x, -y). Then the points (x, f(x)) on the graph of f(x) will be transformed to (x, -f(x)) when the graph is reflected over the x-axis.

The reflection of the function f(x) = |x| is -f(x) = -|x|. If we name the reflected function f(x), we have
  f(x) = -|x|
3 0
3 years ago
Read 2 more answers
What is the following product?
VMariaS [17]

For this case we must find the product of the following expression:

\sqrt {12} * \sqrt {18}

We combine using the product rule for radicals:

\sqrt [n] {a} * \sqrt [n] {b} = \sqrt [n] {ab}

So, we have:

\sqrt {12 * 18} =\\\sqrt {216} =

We rewrite the 216 as6 * 6 * 6 = 6 ^ 3 = 6 ^ 2 * 6

\sqrt {6 ^ 2 * 6} =

By definition of properties of powers and roots we have:

\sqrt [n] {a ^ n} = a ^ {\frac {n} {n}} = a

Then, the expression is:

6 \sqrt {6}

Answer:

Option D

6 0
3 years ago
Read 2 more answers
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