If x+y= -10 and x-y= 2 what is the value of x?

Mathematics

1 answer:

SashulF [63]3 years ago

4 0

X = 6

Step-by-step explanation:

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I really need help with this Triangle problem.

julia-pushkina [17]

Answer:

x = 10

y = 20

Step-by-step explanation:

$\tan \: 30 \degree = \frac{x}{10 \sqrt{3} } \\ \\ \frac{1}{ \sqrt{3} } = \frac{x}{10 \sqrt{3} } \\ \\ \sqrt{3} x = 10 \sqrt{3} \\ \\ x = \frac{10 \sqrt{3} }{ \sqrt{3} } \\ \\ x = 10 \\ \\ \cos 30 \degree = \frac{10 \sqrt{3} }{y} \\ \\ \frac{ \sqrt{3} }{2} = \frac{10 \sqrt{3} }{y} \\ \\ y = 10 \sqrt{3} \times \frac{2}{ \sqrt{3} } \\ \\ y = 10 \times 2 \\ \\ y = 20$

4 0

3 years ago

What did I do wrong I really need help!!!!!!!!!!!!!!!!!!!

Leviafan [203]

In algebra it is fully possible for x to equal to zero. After you have 2x, just divide both sides by two, so it would be 2 divided by 0 and than you would have x=0 and that would be your final answer.

2x + 1 = 4x +1
-2x +1 = 1
-2x = 0
divide by -2
x=0

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3 years ago

Consider the sequence: 12, 17, 22, ... , ... , .... What is the 405th term of this sequence?

Mice21 [21]

A_n= a₁+(n-1)d

a₁ first term

n terms

d distance between each value

a_n= 12+(405-1)(5)=2032

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3 years ago

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Angle 5 measures 90 degrees and angle 1 measures 40 degrees fill in the other angle measures just put it the number.

Serggg [28]

Answer:

sorry for being late