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cluponka [151]
3 years ago
6

Pls I need help thank you

Mathematics
1 answer:
Ket [755]3 years ago
7 0

Answer:

3rd one

hope this will help you

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The graph of a function is shown: scatterplot of the following points: negative 3 and 2, negative 2 and negative 1, 2 and negati
Maurinko [17]
Let's assign these coordinate points as P1(-3,2), P2(-2,-1), P3(2,-1) and P4(3,3). When you plot these points (shown in the picture), they are widely scattered. Therefore, they must not be a trend. Since you forgot to include the options, I would just make a smart guess that these coordinates form a shape which is quadrilateral. I just have to make use of what I have. From the given, I could possibly determine the area of the quadrilateral. 

First, you need to plot the points in a cartesian plane as what is shown at the top of the attached picture. Then, you make a matrix wherein the x coordinates are placed in the first row, and the y coordinates in the second row (shown as the black box in the picture). Make sure that you arrange the points in order (whether clockwise or counterclockwise). 

Once you create the matrix, you find its determinant. This is done by multiplying the numbers diagonally. The equation will be: arrow down - arrow up. The solution is as follows:

Determinant = [(-3×-1) + (-2×-1) + (2×3)] - [(2×-2) + (-1×2) + (-1×3)] = 20

Then, we use the equation for area of any polygon: A = 1/2*determinant
A = 1/2*20 = 10 square units

Thus, the output of the point plotted together creates a quadrilateral with an area of 10 square units.

5 0
3 years ago
Triangle ABC is isosceles where AC = CB. AC = 6a - 8 and CB = 4a - 2. Find AC.​
anastassius [24]

Answer:

10

Step-by-step explanation:

AC = CB

6a - 8 = 4a - 2

a = 3

6(3) - 8 = 10

AC = 10

3 0
3 years ago
Can someone help with this question
Kay [80]

Answer:

133pi

98% sure this is right

circumference in pi form is the radius time 2 and then put pi after it

Step-by-step explanation:

4 0
2 years ago
When buying a pair of jeans, Rick paid 8% of the purchase price in sales tax. If the price of the jeans was $24.50, how
DerKrebs [107]

Answer:

answer D. $1.96

Step-by-step explanation:

6 0
2 years ago
A rectangle length was 4 feet longer than triple the length of it width
wlad13 [49]
Length is 48 ft

The perimeter of a rectangle is equal to the sum of all side’s.
2(lengths)+2(widths)= perimeter
Length=3x+4
Now given the perimeter of 140
3(3x+4)+3(x)=140
9x+12+3x=140
12x+12=140
12x=128
X= 10.7
10.7 is the width

Length=3x+4
Length =3(10.6)+4
Length=31.8+4
Length=35.8
Answer = 35.8
This can only be answered if you were given a perimeter.
4 0
3 years ago
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