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Sidana [21]
3 years ago
8

BRAINLIESTTT ASAP! PLEASE HELP ME :)

Mathematics
1 answer:
kherson [118]3 years ago
6 0

Answer:

b. \displaystyle 225y^2 + 150xy + 100x^2 = 225y^2 + 150xy + 100x^2

a. \displaystyle [8x + 12y]^2 + [6x + 9y]^2 = [10x + 15y]^2

Step-by-step explanation:

b. \displaystyle 225y^2 + 150xy + 100x^2 = 225y^2 + 150xy + 100x^2

a. \displaystyle [8x + 12y]^2 + [6x + 9y]^2 = [10x + 15y]^2

The two expressions are identical on each side of the equivalence symbol, therefore they are an identity.

I am joyous to assist you anytime.

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Find the sum of the first 20 terms of the sequence -7, -3, 1,…
andriy [413]

Answer:

620

Step-by-step explanation:

The formula to find the sum of the first n terms of an arithmetic sequence is n(a1 + aN)/2, where n is the number of terms,  aN is the last term and a1 is the first term. We do not know the last term, though, so we must find it. The equation for this is an=a1+(n−1)d, where d is the common difference and a1 is the first term, and n is the number of terms. Therefore, the last term, an is, -7+(19)4 = 69.

Finally, we plug it into the first formula, the formula to find the sum, and we get 20*(-7+69)/2, which gives us 620 as our final answer.

4 0
3 years ago
Points A, B, and C are collinear and A is between B and C.
Katarina [22]

Answer:

"Process is shown below"

Step-by-step explanation:

Since collinear, they are on the same line. They are positioned as below:

B-----------------------A-------------------C

AB, BC, and AC's expressions are given.

To find BC, first looking at the picture, we can say:

BC = AB + AC

Putting the expressions and solving for x:

7x+5 = 4x - 3 + 5x - 16

7x + 5 = 9x - 19

19 + 5 = 9x - 7x

24 = 2x

x = 12

1. BC = 7x + 5 = 7(12) + 5 = 89

2. AB = 4x - 3 = 4(12) - 3 = 48 - 3 = 45

3. AC = 5x - 16 = 5(12) - 16 = 60 - 16 = 44

Shown

8 0
4 years ago
Find m A B E<br> please help!
3241004551 [841]
90 degrees it would be considered a right angle. You can see that if you turn the page a little and if the ABD is 190 and the other would be 66 degrees then the ABE would be the 90
3 0
3 years ago
If the coordinates of A are (-3, 4) and of B are (3, 2), which is the distance from A to B
Gala2k [10]

Answer:

6 across and 2 up

Hope this helps

7 0
3 years ago
The temperature is -3°F at 7:00 A.M. During the next 4 hours, the temperature increases 21°F. What is the temperature at 11:00 A
3241004551 [841]

Answer: 18°F

Step-by-step explanation: if you add 21 and -3 you get 18

4 0
4 years ago
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