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galina1969 [7]
3 years ago
10

Chứng minh a=(P.sinA/2)/(cosB/2.cosC/2)

Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
4 0

Answer:

I can't understand your question friend.

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Algebra question !!! Please help tyty
Cerrena [4.2K]

Answer:i belive the answer is 4

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A store has a sale with 20% off every item. When you enter the store, you receive a coupon that states that you receive an addit
mr_godi [17]
No, because let’s say for example that something cost $100.00 so you take 20% (or $20) off of the 100 and you’re left with $80.00. Well then you have your 10% off coupon so you take 10% off of 80, which is 8 dollars. So now you’re at $72.00.

But if we just took off 30% from 100 originally, you would be at $70.00

So no it wouldn’t be the same. If you wanted to check the idea yourself just use different numbers and see if they match at the end.
6 0
3 years ago
5. What Ouadrant would this ordered pairs go in? 5.3)*
liubo4ka [24]

Answer:

1st quadrant

Step-by-step explanation:

6 0
3 years ago
What is the image point of (-2, 10) after the transformation rx-axis o D;?
Nastasia [14]

Answer:

This is a composition of transformations

First you have to rotate 180 and next you have to reflect over x axis.

The given point (-7,3) is on the second quadrant, after 180 rotation it will be on the fourth quadrant, (7,-3) Next you have to reflect that point over the x axis. So the final image of the point is on the first quadrant, (7,3).

Step-by-step explanation:

8 0
3 years ago
Suppose A and B are square matrices of the same size. Which of the following are necessarily true?
kiruha [24]

Answer:

c. (A + B)^2-A^2 + 2AB + B^2

Step-by-step explanation:

Given that:

a.

(A-B)^2 = A^2 - 2AB + B^2

If and only if AB = BA

Then;

(A-B)^2 = (A -B ) (A - B)

(A-B)^2 = A^2 - AB-BA + B^2    (FALSE)

b.

(AB)^2=A^2B^2

on true if any only if AB =BA

(AB)^2= (AB) (AB)

c.

(A+ B)^2 =  A^2 + 2AB + B^2

(A+ B)^2 = (A + B) (A+B)

(A+ B)² = A × A + A × B + B × A + B × B

(A+ B)^2 = A^2 + A*B + B*A + B^2

This is true

5 0
3 years ago
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