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3 years ago

Please answer correctly !!!!!!! Will mark brainliest !!!!!!!!!!

Mathematics

1 answer:

MrMuchimi3 years ago

6 0

Answer:

side of square is 2-x

Step-by-step explanation:

Area of the square is side * side or side ², so the expression for the side has to be square root of area

A = 4 -4x + x²

It should be recognized that 4 -4x + x²is a special product ( 2-x)² because this is a perfect square trinomial

side of square is 2-x

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I need answers!!!!!!SOS

KATRIN_1 [288]

So I have number 1 for you.
She is wrong because 12 is not y2 (second sub) . It is actually supposed to be 4-12 / 7-9.

6 0

3 years ago

Please answer the question attached, marking brainliest (serious answers only)

Mandarinka [93]

Step-by-step explanation:

By Exterior Angle Theorem,

81° + b = 117°.

=> b = 117° - 81° = 36°.

8 0

3 years ago

Read 2 more answers

. If x = -4 and y = 2x – 1, then y equals what number?

love history [14]

Answer: y = -8x - 1

Step-by-step explanation: 2 x (-4) is -8. Therefore you get y = -8x - 1

(please mark as brainliest) :D

5 0

3 years ago

Read 2 more answers

The points (1, r) and (5, 1) lie on a line with slope 3/4<br> Find the missing coordinate r.

tiny-mole [99]

The missing coordinate r is -2

8 0

3 years ago

A homogeneous second-order linear differential equation, two functions y1 and y2 , and a pair of initial conditions are given be

Basile [38]

Answer:

Step-by-step explanation:

Check part

$y= C_1y_1 + C_2y_2 = C_1cos(7x)+C_2sin(7x)$

$y'= -7 C_1sin(7x)+7C_2cos(7x)$

$y"= -49 C_1cos(7x) - 49 C_2sin(7x)$

Now, replace to the original one.

$y"+49 y = -49C_1cos(7x)-49 C_2 sin(7x) + 49 C_1cos(7x) +49 C_2sin(7x) = 0\\$

Done!!

Particular solution

$y(0) = C_1cos(0) + C_2 sin(0) = C_1= 10$

I believe that y'(0) = 4, not y(0) anymore. Since y(0) CANNOT have two different solution.

$y(0)'= -7 C_1sin(0) + 7 C_2 cos (0) = 7 C_2= -4$

$C_2 = -4/7$

The last step is to put C1, C2 into your solution. You finish it.

4 0

4 years ago