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2 years ago

How do you find x for this question?

Mathematics

1 answer:

lilavasa [31]2 years ago

3 0

X = 32.5 I believe..........

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Which graph represents a line with a slope of - į and a y-intercept equal to that of the line y = = x-27

telo118 [61]

Answer:

Step-by-step explanation:

Let the equation of the line is,

y = mx + b

Where m = slope of the line

b = y-intercept

Slope of the line 'm' = - $\frac{2}{3}$

y-intercept 'b' of the line is equal to the y-intercept of another line given as,

$y=\frac{2}{3}x-2$

Here y-intercept of the line 'b' = -2

Therefore, the equation of the line will be,

y = (- $\frac{2}{3}$ )x + (-2)

$y=-\frac{2}{3}x-2$

Here negative slope represents a line which is decreasing having y-intercept = -2

Therefore, last graph (bottom) given in the picture will be the answer.

6 0

2 years ago

Are the solutions of the equation x^4+3x^2+2=0 help

alex41 [277]

$x^4+3x^2+2=0\\\\\text{substitute}\ x^2=t\\\\t^2+3t+2=0\\\\t^2+t+2t+2=0\\\\t(t+1)+2(t+1)=0\\\\(t+1)(t+2)=0\iff t+1=0\ \vee\ t+2=0\\\\t=-1\ \vee\ t=-2\\\\t=x^2\ \text{therefore}\\\\x^2=-1\ \vee\ x^2=-2\\\\x=\pm\sqrt{-1}\ \vee\ x=\pm\sqrt{-2}\\\\x=\pm i\ \vee\ x=\pm i\sqrt2$

5 0

2 years ago

Which number is the additive inverse of -4 1/4

vovangra [49]

The additive inverse of a number is the opposite number......for this problem, it is a number, that when added to -4 1/4 = 0.

so the additive inverse of -4 1/4 = 4 1/4

8 0

2 years ago

Read 2 more answers

Write two perfect squares that each have a value greater than100 and less than 200

Trava [24]

Answer:

121, 144

Step-by-step explanation:

√121= 11

√144= 12

6 0

1 year ago

Alexandra and Austin applied to the same university. They looked up the average SAT score of students admitted to that universit

Deffense [45]

Answer:

x= (y+40)-(y-330)

Step-by-step explanation:

According to the information provided, the difference in their scores would be the result of subtracting Austin's SAT score from Alexandra's SAT score.

Then, as Alexandra's SAT score was 40 points above the average score this means that you have to add 40 to the average score to get her result. Also, as Austin's SAT score was 330 points below the average score, this means that you have to subtract 330 from the average score. With this you can write the expression:

x= difference in their scores

y= average score

x= (y+40)-(y-330)

7 0

2 years ago