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2 years ago

Can anyone help me w this question?

Mathematics

1 answer:

Vitek1552 [10]2 years ago

3 0

X=25 because it needs to add up to 180°

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Which equation can be used tº find B in the triangle below?

Anton [14]

Answer:

tanB=8/6

Step-by-step explanation:

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3 years ago

Write an equation for the exponential function represented in the table below

leva [86]

Y- mx+c
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3 years ago

Solve for x:a(a²+b²)x²+b²x-a

m_a_m_a [10]

Answer:

x = a/(a² + b²) or x = -1/a

Step-by-step explanation:

a(a²+ b²)x² + b²x - a =0

Use the quadratic equation formula:

$x = \dfrac{-b\pm\sqrt{b^2-4ac}}{2a} =\dfrac{-b\pm\sqrt{D}}{2a}$

1. Evaluate the discriminant D

D = b² - 4ac = b⁴ - 4a(a² + b²)(-a) = b⁴ + 4a⁴ + 4a²b² = (b² + 2a²)²

2. Solve for x

$\begin{array}{rcl}x & = & \dfrac{-b\pm\sqrt{D}}{2a}\\\\ & = & \dfrac{-b^{2}\pm\sqrt{(b^{2}+2a^{2})^{2}}}{2a(a^{2} + b^{2})}\\\\ & = & \dfrac{-b^{2}\pm(b^{2}+ 2a^{2})}{2a(a^{2} + b^{2})}\\\\x = \dfrac{-b^{2}+(b^{2} + 2a^{2})}{2a(a^{2} + b^{2})}&\qquad& x =\dfrac{-b^{2}-(b^{2} + 2a^{2})}{2a(a^{2} + b^{2})}\\\\x =\dfrac{-b^{2}+(b^{2} + 2a^{2})}{2a(a^{2} + b^{2})}&\qquad& x =\dfrac{-b^{2}-(b^{2} +2a^{2})}{2a(a^{2} + b^{2})}\\\\\end{array}$

$\begin{array}{rcl}x = \large \boxed{\mathbf{\dfrac{a}{a^{2} + b^{2}}}}&\qquad& x =\dfrac{-b^{2}-(b^{2} +2a^{2})}{2a(a^{2} + b^{2})}\\\\&\qquad& x =\dfrac{-2b^{2}- 2a^{2}}{2a(a^{2} + b^{2})}\\\\&\qquad& x =\dfrac{-2(a^{2}+ b^{2})}{2a(a^{2} + b^{2})}\\\\&\qquad& x =\large \boxed{\mathbf{-\dfrac{1}{a}}}\\\\\end{array}$

5 0

3 years ago

Subtract. (−8.3x+4)−(3.2x−5) Enter your answer, in simplified form, in the box.

lesya692 [45]

-2.5x is the answer for this question i believe if i did it right'

8 0

3 years ago

Read 2 more answers

The value of k is: please help im struggling

iVinArrow [24]

Answer:

E) 48

Step-by-step explanation:

Parallel lines divide the transversals proportionally.

Set proportions and solve for k:

k/24 = 64/32
k/24 = 2
k = 24*2
k = 48

Correct choice is E.

4 0

2 years ago

Can anyone help me w this question? ​

Can anyone help me w this question?