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tekilochka [14]
3 years ago
12

What is the area of the triangle?

Mathematics
1 answer:
Elden [556K]3 years ago
7 0

Answer:

1.A. 75 m sq

2.D. 67.5 m sq

3.C. 210 m sq

Step-by-step explanation:

no step by step

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7 0
3 years ago
Consider the following sets of matrices: M2(R) is the set of all 2 x 2 real matrices; GL2(R) is the subset of M2(R) with non-zer
defon

Answer:

Step-by-step explanation:

REcall the following definition of induced operation.

Let * be a binary operation over a set S and H a subset of S. If for every a,b elements in H it happens that a*b is also in H, then the binary operation that is obtained by restricting * to H is called the induced operation.

So, according to this definition, we must show that given two matrices of the specific subset, the product is also in the subset.

For this problem, recall this property of the determinant. Given A,B matrices in Mn(R) then det(AB) = det(A)*det(B).

Case SL2(R):

Let A,B matrices in SL2(R). Then, det(A) and det(B) is different from zero. So

\text{det(AB)} = \text{det}(A)\text{det}(B)\neq 0.

So AB is also in SL2(R).

Case GL2(R):

Let A,B matrices in GL2(R). Then, det(A)= det(B)=1 is different from zero. So

\text{det(AB)} = \text{det}(A)\text{det}(B)=1\cdot 1 = 1.

So AB is also in GL2(R).

With these, we have proved that the matrix multiplication over SL2(R) and GL2(R) is an induced operation from the matrix multiplication over M2(R).

7 0
3 years ago
Y=(<br><img src="https://tex.z-dn.net/?f=y%20%3D%20%28%20%5Csqrt%7Bx%20%2B%203%7D%20%2B%205%29%20%5E%7B10%20%7D%20" id="TexFormu
MA_775_DIABLO [31]

Answer:

(-8,0)

Step-by-step explanation:

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3 years ago
HELP PLZ AGAIN. Same material. It is still timed. Will give 50 pts and brainly. This is vital to my math grade. Time is on the e
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Answer:

slope-intercept form: y = x+2

The slope is 1

y-interspet is -2

Step-by-step explanation:

hope it helps

7 0
3 years ago
A one year member ship to your local gym costs $539. there is an initial fee of $35. write an equation tou can use to fund out h
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$539 - $35 = $504

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3 years ago
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