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balandron [24]
3 years ago
6

How to solve these equations?

Mathematics
1 answer:
Scorpion4ik [409]3 years ago
8 0
1) / sin x / = y ≥ 0 ;
   We solve the equation y^{2} +y - 2 = 0 ;

a = 1 ; b = 1 ; c = - 2 ;
b^{2} - 4ac = 9 ;
y1 = ( - 1 + 3 ) / 2 = 1 ≥ 0 ( correct ) ;
y2 = ( - 1 - 3 ) / 2 = - 2 ≥ 0 ( false ) ;
Then, / sin x / = 1 ;
sinx = + 1 or sin x = - 1 ;
x ∈ { 90 }  U { 270 } ;
x ∈  {90 , 270}.
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X°+(x+30)=180°<br>I need answer​
djyliett [7]

Answer:

210 + -1x

Step-by-step explanation:

Simplifying

X + (x + -30) = 180

Reorder the terms:

X + (-30 + x) = 180

Remove parenthesis around (-30 + x)

X + -30 + x = 180

Reorder the terms:

-30 + X + x = 180

Solving

-30 + X + x = 180

Solving for variable 'X'.

Move all terms containing X to the left, all other terms to the right.

Add '30' to each side of the equation.

-30 + X + 30 + x = 180 + 30

Reorder the terms:

-30 + 30 + X + x = 180 + 30

Combine like terms: -30 + 30 = 0

0 + X + x = 180 + 30

X + x = 180 + 30

Combine like terms: 180 + 30 = 210

X + x = 210

Add '-1x' to each side of the equation.

X + x + -1x = 210 + -1x

Combine like terms: x + -1x = 0

X + 0 = 210 + -1x

X = 210 + -1x

Simplifying

X = 210 + -1x

7 0
2 years ago
PLEASE ITS ALREADY LATE AND I NEED TO TURN IT TODAY
Troyanec [42]

Answer:

4800

Step-by-step explanation:

I attached a picture of the work.

We need to made a function that will help us solve this

f(x)=dx; d = $ per hour, x = # of hours

step 1) identify d (in this case, the money made per hour) which = 10

f(x)=10x

step 2) identify x (# of hours total) which = 480

f(x)=10(480)

step 3) solve the equation

f(x)=4800

independent variable:

the number of hours

dependant variable:

the amount of money made after 12 weeks

5 0
3 years ago
In a city council election, 2,445 votes were cast for one of the candidates. if the candidate received at least one third of the
Nookie1986 [14]
<h2>ANSWER:</h2>

<u><em>A total of 7,335</em></u>

Step-by-step explanation:

<u><em>2,445 x 3 = 7,335</em></u>

<u><em>You need to multiply 2,445 x 3 to get your answer.</em></u>

<u><em /></u>

<u><em /></u>

<h3><u><em>Thank you for asking this great question need any other help please let me know by commenting below I'd be glad to help.</em></u></h3><h3><u><em /></u></h3><h3><u><em> I'd also greatly appreciate you if you mark me as brainliest and click that thanks button.( optional )</em></u></h3><h3><u><em /></u></h3><h3><u><em>Your brainly friend ( lauralit1 )</em></u></h3>
5 0
3 years ago
What is 7/10 as a decimal and a percent?
AlekseyPX
7 / 10 = 0.70 = 70%
6 0
3 years ago
Read 2 more answers
Help me plsss the photo is down fast
kiruha [24]

Answer:

<h2><em><u>Option</u></em><em><u> </u></em><em><u>B</u></em><em><u>:</u></em></h2><h2>\frac{1}{5}</h2>

Step-by-step explanation:

<em><u>Given</u></em><em><u>,</u></em>

Number of numbers of each side of the cube

= 4, 5, 6, 7, 8 and 9

= 6 numbers

Number of sides of cube having the number 5

= 1

<em><u>Therefore</u></em><em><u>,</u></em><em><u> </u></em>

Probability of getting a side of the cube of no. 5 is

=  \frac{no. \: of \: favourable \: outcomes}{total \: no. \: of \: possible \: outcomes}

=  \frac{1}{6} (ans) \: (option \: B)

8 0
3 years ago
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