2 years ago

45 points! x+1(8+5)+y2-3(x3+y-4)=36-4+x7-y-1 pls i need help now!

Mathematics

1 answer:

Nadya [2.5K]2 years ago

3 0

The answer is X=-2/5

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28÷7+(-19+10)(-4) does anyone know how to do this

ikadub [295]

Pemdas
28/7 + (-19+10)(-4)
28/7+ (-9)(-4)
28/7 + (36)
4+ (36)
40

5 0

2 years ago

Simplify. c) <img src="https://tex.z-dn.net/?f=%5Csqrt%7B25%2B10%5Csqrt%7B5%7D%20%2B5%20%7D" id="TexFormula1" title="\sqrt{2

tatyana61 [14]

Answer:

$5+\sqrt{5}$

Step-by-step explanation:

Both are essentially same questions, considering 30 = 25 + 5.

Solving c)

$\sqrt{25+10\sqrt{5} +5} =$
$\sqrt{5^2+2*5*\sqrt{5} +(\sqrt{5} )^2} =$
$\sqrt{(5+\sqrt{5} )^2} =$
$5+\sqrt{5}$

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2 years ago

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Please explain, True or False: The variables in the equation 4x-(5y)2=64x-(5y)2=6 are 4, 5, and 6

Alika [10]

The answer is true.....

3 0

3 years ago

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What do I’m supposed to do ?

vlabodo [156]

Answer: okay so first solve for x which is going to be x=10

Step-by-step explanation:

3 0

2 years ago

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I don’t understand how to do this

schepotkina [342]

Answer:

The solution is $x =0.$

Step-by-step explanation:

The equation

$\bold{(1).}\: sin(\dfrac{3\pi }{2} +x)+sin(\dfrac{3\pi }{2} +x) =-2$

can be rewritten as

$2* sin(\dfrac{3\pi }{2} +2) =-2$

and can be further simplified to

$sin(\dfrac{3\pi }{2}+x ) =-1$ .

Now, taking the inverse sine of both sides we get:

$sin^{-1}(sin(\dfrac{3\pi }{2} +x) =sin^{-1}(-1)$

$\bold{(2).}\: \dfrac{3\pi }{2} +2 =sin^{-1}(-1)$

The value of the right side on the interval $[0,2\pi)$ is

$sin^{-1}(-1) = \dfrac{3\pi}{2} \: \:( \text{or }270^o)$ ,

which makes the equation (2)

$\dfrac{3\pi }{2}+x =\dfrac{3\pi}{2}$

solving for $x$ gives

$\boxed{x = 0}$

which is our solution.

4 0

2 years ago