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3 years ago

How are coordinate planes helpful to archaeologist

1 answer:

5 0

A coordinate plane is the exact or close to exact location that an object can be found. So archaeologists can use coordinate planes to find bones.

Hope this helps!

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Brianna's teacher asks her which of these three expressions are equivalent to each other. which is equivalent

docker41 [41]

Answer:

Please specify what the three expressions are.

Step-by-step explanation:

From what I understand, you need to set the expressions equal to each other. For instance, if one is 2(x-3) and the other is 2x-6, you could write it as:

$2(x-3)=2x-6$

Then, by evaluating it, you would get:

$2x-6=2x-6$ by distribution over subtraction.

$2x-6+6=2x-6+6$ by the additive property of equality

$2x=2x$ Simplify.

$x=x$ by the reflexive axiom.

Since x will always equal itself, 2(x-3) and 2x-6 are equivalent.

Therefore, if the expressions, once set equal to each other, result in the equation x=x, or any other expression in which one quantity equals itself, the two expressions are equal.

Sorry I could not be of more help, but you did not specify what the expressions were.

4 0

3 years ago

Compute the average rate of change of f(x)=(x+4)/(x-3) over the interval [5,7].

muminat

Answer:

C) - 7/8

Step-by-step explanation:

<u>Average rate of change is:</u>

[f(7) - f(5)]/(7 - 5)

<u>Find the values and substitute into expression:</u>

f(7) = (7 + 4)/(7 - 3) = 11/4
f(5) = (5 + 4)/(5 - 3) = 9/2 = 18/4

<u>Find the rate of change:</u>

(11/4 - 18/4)/2 = (-7/4)/2 = - 7/8

Correct choice is C

7 0

3 years ago

How is the graph of y =(x-1)2 - 3 transformed to produce the graph of y = 5(X+4)??

lina2011 [118]

Answer:

<h2>The graph is translated left 5 units, compressed vertically by a factor of 5, and translated up 3 units.</h2>

Step-by-step explanation:

The initial function is

$y=(x-1)^{2} -3$

The transformed function is

$y=5(x+4)^{2}$

Notice that the first function represents a parabola with vertex at (1, -3), and the secong function represents a parabola with vertex at (-4, 0). That means the function was shifted three units up and 5 units to the left. Additionally, the function was compressed by a scale factor of 5, because that's the coffecient of the quadratic term.

Therefore, the right answer is the first choice.

6 0

3 years ago

The following data give the weights (in pounds) lost by 15 members of a health club at the end of 2 months after joining the clu

frutty [35]

First arrange the data in an order
3, 3, 3, 7, 7, 10, 10, 12, 12, 13, 14, 17, 17, 18, 21

a.) Q1 = (N + 1)/4th item = (15 + 1)/4 = 4th item = 7
Q2 = 2(16)/4 = 16/2 = 8th item = 12
Q3 = 3(16)/4 = 3(4) = 12th item = 17
IQR = (Q3 - Q1)/2 = (17 - 7)/2 = 10/2 = 5

b.) 82nd percentile = 82(16)/100 = 13th item = 17

c.) 12 is the 8th item which is in the middle of the data set, so the percentile rank is 50%

4 0

3 years ago

Are the expressions 6x - 2y + 4y and 4x + 4y equivalent?

sp2606 [1]

Answer:

Not equivalent

Step-by-step explanation:

if we simplify our two equations we get 6x + 2y and 4x + 4y. Which is not equivalent to each other

6 0

3 years ago