3 years ago

If DE = 3x-5 and AC = 5x-3, find x.

Mathematics

1 answer:

deff fn [24]3 years ago

3 0

Step-by-step explanation:

2(3x-5)=5x-3

6x -10 =5x -3

x=7

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Please help me out :)

arlik [135]

Answer:

$\frac{\sqrt{17} }{7}$

Step-by-step explanation:

Using the Pythagorean identity

sin²x + cos²x = 1, then

sinx = $\sqrt{1-cos^2x}$

Note that ( $\frac{4\sqrt{2} }{7}$ )² = $\frac{32}{49}$

sinΘ = $\sqrt{1-(32/49)}$

= $\sqrt{\frac{17}{49} }$ = $\frac{\sqrt{17} }{7}$

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3 years ago

x^2-6x=-1 If the quadratic equation has real solutions, what are the solutions? Explain. Estimate irrational solutions to the ne

IgorC [24]

X^2 -6x +1 = 0
a=1
b = -6
c = 1

Use the quadratic formula
x = [-b +- sq root (b^2 -4ac)] / 2a
x = [--6 +- sq root (36 - 4)] / 2
x = [ 6 +- sq root (32)] / 2
sq root (32) = 5.657

x1 = [ 6 + 5.657] / 2
x1 = 11.657 / 2
x1 = 5.8285 
x1 = 5.82 (to nearest tenth)

x2 = [ 6 - 5.657] / 2
x2 = .343 / 2
x2 = .1715
x2 = .2 (to nearest tenth)

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3 years ago

Carlos wants to buy a new t.v. He is willing to spend less than $600 for 36” or smaller or more than $2000 for 42” or larger. He

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Answer:

200.00

Step-by-step explanation:

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3 years ago

(4x^3-3x^2+5x+6) /(x+6) what is the quotient

lawyer [7]

Answer:

(4x2 + x + 6) • (x - 1)

———————————————————————

x + 6

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4 years ago

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Answer:

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Step-by-step explanation:

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