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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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miv72 [106K]

Answer:  X + 62 = 3251

Step-by-step explanation:

8 0
3 years ago
Can you please help me with 23 and 25 I do not understand!!! Please help
adell [148]

when you multiply a number by a value that's greater than 1, that number increases, for example 2 and then we multiply it like 2 * 3, clearly 2*3 is greater than 2.

now when you multiply a number  by a value that's lesser than 1, that number decreases, for example 2 and then we multiply it by something like 1/4, so 2 * 1/4 = 1/2, well, clearly 1/2 is smaller than 2, so 1/2 is a decreased value of 2.

23)

we have here 4/7, and then a product, well, the product is 4/7 and 9/10, however 9/10 is less than 1, recall 1 = 10/10, 9/10 is just a tiny bit less than 1.

because we're multiplying 4/7 by some amount less than 1, the product is a smaller value than 4/7, thus

 \bf \cfrac{4}{7}~~>~\left( \cfrac{9}{10}\times \cfrac{4}{7} \right)

25)

we have here 5/6 and we multiply it by 7/7, wait a minute!!! 7/7 = 1, we're really just multiplying 5/6 by 1 then, what does that give us?  well, 5/6 * 1  = 5/6, just the number itself,

\bf \cfrac{5}{6}~~=~\left( \cfrac{5}{6}\times \cfrac{7}{7} \right)

7 0
3 years ago
How do you do 1/4 (16x+20)-7x
Ira Lisetskai [31]
Distribute the 1/4:
1/4(16x) + 1/4(20) - 7x

Do the multiplication:
1/4(16x) = 16x/4 = 4x
1/4 (20) = 20/4 = 5

Now you have:
4x + 5 - 7x = 0

Combine like terms (4x and -7x):
-3x + 5 = 0

Subtract 5 from both sides:
-3x = -5

Divide by -3:
x = -5/-3 = 5/3

Answer:
x= 5/3
6 0
3 years ago
Use the picture for the question and the answer choices:)
Orlov [11]

Parenthesis first 5-2=3.

7^2=49

-3*3=-9

49-9=40.

A is your answer.


8 0
3 years ago
26. Multiple Representations The tableDad's AgeCindy's Ageshows the ages of Cindy and her dad.2 years old28 years olda. Write an
madam [21]
A. is D=C+26 

B is no 

C. is <span>because in each age difference, it is a 26 year age difference. SO you would add 26 to 18, which would give you 44 year old. </span>

3 0
3 years ago
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