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Tema [17]
3 years ago
8

Find the missing values in the ratio table then write the equivalent ratio

Mathematics
1 answer:
gayaneshka [121]3 years ago
6 0
The missing dogs value is 2 because 10/2=5 and 4/2=2
The missing cats value is 80 because 2*16=32 and 5*16=80

Hope this helps :)
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Help Please<br> A- y = x<br> B- y = 2x<br> C- y = -2x<br> D- y = x + 2
Over [174]

Answer:

y = x

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Evan said that the difference between two negative numbers must be negative. Was he right?
lesya692 [45]
No he was not right because if you had -7 and -5 the difference is 7 + 5 which equals 12.
8 0
2 years ago
Use cross products to find the area of the triangle in the xy-plane defined by (1, 2), (3, 4), and (−7, 7).
Free_Kalibri [48]

I love these. It's often called the Shoelace Formula. It actually works for the area of any 2D polygon.


We can derive it by first imagining our triangle in the first quadrant, one vertex at the origin, one at (a,b), one at (c,d), with (0,0),(a,b),(c,d) in counterclockwise order.


Our triangle is inscribed in the a \times d rectangle. There are three right triangles in that rectangle that aren't part of our triangle. When we subtract the area of the right triangles from the area of the rectangle we're left with the area S of our triangle.


S = ad - \frac 1 2 ab -  \frac 1 2 cd - \frac 1 2 (a-c)(d-b) = \frac 1 2(2 ad - ab -cd - ad +ab +cd -bc) = \frac 1 2(ad -bc)


That's the cross product in the purest form. When we're away from the origin, a arbitrary triangle with vertices A(x_1, y_1), B(x_2, y_2), C(x_3, y_3) will have the same area as one whose vertex C is translated to the origin.


We set a=x_1 - x_3, b= y_1  - y_3, c=x_2 - x_3, d=y_2- y_3


S= ad-bc=(x_1 - x_3)(y_2 - y_3) -(x_2-x_3)(y_1 - y_3)


That's a perfectly useful formula right there. But it's usually multiplied out:


S= x_1y_2 - x_1 y_3  - x_3y_2 + x_3 y_3 - x_2 y_1 + x_2y_3 + x_3 y_1 - x_3 y_3


S= x_1 y_2 - x_2 y_1  + x_2y_3 - x_3y_2   + x_3 y_1 - x_1 y_3


That's the usual form, the sum of cross products. Let's line up our numbers to make it easier.


(1, 2), (3, 4), (−7, 7)

(−7, 7),(1, 2), (3, 4),


[tex]A = \frac 1 2 ( 1(7)-2(-7) + 3(2)-4(1) + -7(4) - (7)(3)

8 0
3 years ago
What is the measure of the angle shown on the right
GuDViN [60]

Answer:945

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
R45 is increase by 10%​
Hunter-Best [27]

Answer:

Number 45 increased by 10% (10 percent) of its value (percentage increase) and calculated absolute change (actual difference). Answer: number percentage increased = 49.5, absolute change (actual difference) = 4.5 Introduction. Percent, p% p% = p / 100 = p ÷ 100.

Step-by-step explanation:

Hope this helps :)

Have an amazing day <3

Pls mark as brainliest :p

5 0
2 years ago
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