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4 years ago

Plz help asap, hahdhdhdhjdhdj

Mathematics

1 answer:

marshall27 [118]4 years ago

6 0

X = 30 because 4x and 2x are supplementary so if you add them together and set it equal to 180 degrees then you will find that x = 30

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"The solution to the system is (#,#)." I'm really tired and for my life don't know the solution. Help please!

Anna71 [15]

Answer: (4,-5)

Step-by-step explanation:

8y = -40

(divide by 8)

y = -5

(plug it in to one of the equations)

3x + 6*-5 = -18

3x + -30 = -18

3x = 12

x = 4

6 0

4 years ago

Which function models the area of a rectangle with side lengths of 2x - 4 units and x + 1 units?

aalyn [17]

Answer:

Area of rectangle, $f(x)=2x^2-2x-4$ .

Step-by-step explanation:

We are given with side lengths of a rectangle are (2x-4) units and (x+1) units. It is required to find the area of rectangle.

The area of a rectangle is equal to the product of its length and breadth. It is given by :

$A=L\times B$

Let us consider, L = (2x-4) units and B = (x+1) units

Plugging the side lengths in above formula:

$A=(2x-4)\times (x+1)$

$A=2x^2+2x-4x-4\\\\A=2x^2-2x-4$

So, the function that models the area of a rectangle is $f(x)=2x^2-2x-4$ .

5 0

3 years ago

Tìm x a,(2x+3x)^2-4x^2=10 b,(x+2)^-(x-2)(x+1)=3 c,(2x+3)^-4(x-1)^2=0

mash [69]

Answer:

Step-by-step explanation:

7 0

3 years ago

Steps for solving 5(2x - 8) = 20 are shown.

kykrilka [37]

Answer: D. Using the commutative property

explanation: you use the distributive property to get 10x-40. to combine like terms you add 40 to -40 and 20. and you decide 10 by both sides to get x by itself and the answer on the other side which equals 6.

3 0

3 years ago

If 0°<0<90° and sin0=12/13, find cos0 using trigonometric identities.

Aleks04 [339]

here's the solution,

we know :

$\sin( \theta) = \dfrac{perpendicular}{hypotenuse}$