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astra-53 [7]
3 years ago
15

Which shows the expression below simplified?

Mathematics
1 answer:
salantis [7]3 years ago
7 0

Answer:

D

Step-by-step explanation:

(7 × 10-7) × 0.06

7 × 0.06 × 10^-7

0.42 × 10^-7

4.2 × 10^-8

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Item 20 You are riding a roller coaster when a shoe falls off your foot. The function y=200−16t2 represents the height y (in fee
AleksandrR [38]
Assuming you mean y = 200 - 16t^2, we have all the required information needed to solve this problem. The y-value is the height of the building and the t-value represents the number of seconds after the shoe fell off.

Since we are trying to solve <em>for t</em>, we will be using our y-value. The problem states that we landed on a building with a height of 31 feet. We can plug this into the y-value, since that is what y is defined as (the height of the building).

Now we have:
31 = 200 - 16t^2

We can solve this to find t:
-169 = -16t^2
169 = 16t^2
10.5625 = t^2
3.25, -3.25 = t

We have found two answers for t. However, the negative value is not a solution because we can not have a negative number of seconds. Thus, 3.25 is the only value of t which works for this problem.

Since t is the value we are trying to find, we have our answer. The shoe hits the building after 3.25 seconds.
7 0
3 years ago
Read 2 more answers
What is the slope of a line that is perpendicular to the line represented by the equation y=-2/5x+4/5
enot [183]

Answer:

\frac{5}{2}

Step-by-step explanation:

recall for a line whose equation is

y = mx + b,

the slope of this line is m

the slope of a line that is perpendicular to this line is -\frac{1}{m}

in this case,

m = -\frac{2}{5}

hence -\frac{1}{m}=\frac{5}{2}

6 0
2 years ago
I have no clue what it is
Orlov [11]
13.95+2.25+2.25+2.25+2.75+2.75+2.75= 28.95

6 0
2 years ago
The Michigan veteran population in 1990 was 14.2% and in 2000 was 12.4%.
Mandarinka [93]

Let x- intercept represents time

Let y-intercept represents population

Let 1990 represent initial year

Points are (0,14.2)(10,12.4)

slope m= \frac{y2-y1}{x2-x1}

= \frac{12.4-14.2}{10-0} =\frac{-1.8}{10} = -0.08

General linear equation

y= mx+b --------------(i)

here m is slope and b is intercept

plug the 1st point in equation

14.2= -0.018(0) + b

b=14.2

y= 0.018x + 14.2

replace y with p(t) and x with t

p(t) = -0.018t + 14.2


6 0
3 years ago
The complement of 10 percent is 90 percent or in decimal .90.
jonny [76]
What is the question?
5 0
3 years ago
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