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lyudmila [28]
3 years ago
6

17. Javier worked the following hours in the

Mathematics
1 answer:
gladu [14]3 years ago
3 0

Answer:

Step-by-step explanation:

need more info please

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What is the area of a triangle whose vertices are D(3,3), E(3,-1), and F(-2,-5)?
Elis [28]

There is a formula which employs the use of determinants and which helps us calculate the area of a triangle if the vertices are given as (x_1,y_1),(x_2,y_2),(x_3,y_3). The formula is as shown below:

Area=\frac{1}{2}\begin{vmatrix}x_1&y_1&1 \\ x_2&y_2&1\\ x_3&y_3&1\end{vmatrix}

Now, in our case, we have: (x_1,y_1)=(3,3)

(x_2,y_2)=(3,-1), and

(x_3,y_3)=(-2,-5)

Thus, the area in this case will become:


Area=\frac{1}{2}\begin{vmatrix}3&3&1 \\ 3&-1&1\\ -2&-5&1\end{vmatrix}

Therefore, Area=\frac{1}{2}\times [[3(-1\times 1-(-5)\times 1]-3[3\times 1-(-2)\times 1]+1[3\times -5-2]]= \frac{1}{2}\times -20=-10

We know that area cannot be negative, so the area of the given triangle is <u>10 squared units</u>.



3 0
3 years ago
Does the table represent a function, -3, 6, -2,9, 0,4, -2,5
Ronch [10]

Answer:

No.  There are two solutions to the point x=-2:  9 and 5.

Step-by-step explanation:

Use the vertical line test to determine whether or not a graph represents a function. If a vertical line is moved across the graph and touches the graph at only one point, then the graph is a function. If the vertical line touches the graph at more than one point, for the same x position, then the graph is not a function.

3 0
2 years ago
Un grupo de personas se reunió para recorrer 210 kilómetros en 14 días. Si recorren la misma distancia cada día, ¿Cuántos kilóme
Svet_ta [14]

Answer: 15 kilómetros

Step-by-step explanation: Ellas viajaron 15 kilómetros por día, 210/14 = 15

3 0
3 years ago
*HELP PLEASE*
WINSTONCH [101]

Ok so you would divide 39,900 by 7.1% to get the final answer


39,900/.071 = 561,971.830985915493


Since you can’t have .830985915493 of a book, you would round up to get the final answer to be


561,972 books


Hope this helps!

8 0
3 years ago
Choose the equation of the line that is parallel to the y-axis.
wariber [46]

Answer:

A

Step-by-step explanation:

because there will be a vertical line at x= -2

3 0
3 years ago
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