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Dovator [93]
3 years ago
13

A tree 7 ft tall grows an average of 6 in. each year. Which equation models the tree’s height h after x years?

Mathematics
1 answer:
Vesna [10]3 years ago
6 0
The initial height of the tree = 7 ft

Each year the tree grows 6 in.   6 in = 6 / 12 = 0.5 ft

So the tree grows 0.5 ft every year.

After x years, the tree would have grown extra = 0.5*x =0.5x

So the height of the tree would be = Initial height + extra height grown

= 7 + 0.5x

h = 7 + 0.5x

Model is    h = 7 + 0.5x, 

where h = height of the tree in feet after x years. 

Hope this explains it.
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On the average, a certain light bulb is supposed to last 450 hours. If it
Dafna1 [17]

Answer:

72 novels

Step-by-step explanation:

A number of assumptions are involved regarding operating environment, utilization fraction, and probability of failure as a function of time. The precise meanings of the words "average", "supposed to last", "maximum", and "expect" are involved. The details are too arcane to go into here.

 (450 hours)/(6 1/4 hours/novel)

 = (450/(25/4)) novels

 = (450*4/25) novels

 = 72 novels

6 0
3 years ago
Factor completely 625x8 − 1. (25x4 − 1)(25x4 1) (5x2 − 1)(5x2 1)(25x4 − 1) (5x2 − 1)(5x2 1)(5x2 1)(5x2 1) (5x2 − 1)(5x2 1)(25x4
GREYUIT [131]

The complete factor of the polynomial  625x⁸ − 1 is (25x⁴ + 1)(25x⁴ − 1). Then the correct option is A.

<h3>What is polynomial?</h3>

Polynomial is an algebraic expression that consists of variables and coefficients. Variable are called unknown. We can apply arithmetic operations such as addition, subtraction, etc. But not divisible by variable.

Factor completely 625x⁸ − 1.

We know that

\rm   a^2 - b^2 = (a+b)(a-b)

(25x⁴)² − 1²

(25x⁴ + 1)(25x⁴ − 1)

The complete factor of the polynomial  625x⁸ − 1 is (25x⁴ + 1)(25x⁴ − 1). Then the correct option is A.

More about the polynomial link is given below.

brainly.com/question/17822016

4 0
2 years ago
Pls help ill give brainliest lolz​
Nonamiya [84]

Answer:

t =5

Step-by-step explanation:

-7(2-t)=21

-14+7t=21

7t=35

t=5

5 0
3 years ago
The ratio of men to women working for a company is 4 to 5 . If there are 125 women working for the company, what is the total nu
Mrac [35]

Answer:

225

Step-by-step explanation:

125/5=25

25x4=100 men

100men:125women = 4:5

100+125=225 total

5 0
2 years ago
I need help right now please
Harrizon [31]

Answer:

ABOUT?????

Step-by-step explanation:

I need help right now please

6 0
4 years ago
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