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vagabundo [1.1K]
3 years ago
12

Solve each system of equations by substitution: X + Y = 75 10x + Y = 48

Mathematics
1 answer:
egoroff_w [7]3 years ago
7 0
X = -3
y = 78
are the answers

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Which of the following equations best represents the regression line for the data given in the table above?
Art [367]

Answer:

B. y=3x-2

Step-by-step explanation:

Regression line has positive slope value, it's rise from left to right.

y=3x-2 seems to be the most possible one

5 0
3 years ago
The equation represents an ellipse. which point is the center of the ellipse? (−9, 5) (−5, 9) (5, −9) (9, −5)
Igoryamba

The point which is the center of the ellipse whose equation is; (y+5)²/121+(x-9)²/49=1 s in the task content is; (-5, 9).

<h3>Which point represents the center of the ellipse whose equation is given as; (y+5)²/121+(x-9)²/49=1?</h3>

It follows from convention that the equation of an ellipse usually takes the form;

(y-h)²/a²+(x-k)²/b²=1 in which case, the center of the ellipse is given by the point; (h, k).

On this note, By comparison of the actual equation and the standard equation, it follows that;

+5 = -h and consequently, h = -5,

-9 = -k and consequently, k = 9.

Ultimately, the point which is the center of the

ellipse is; (-5, 9).

Remark: The equation of the ellipse which is missing in the task content is; (y+5)²/121+(x-9)²/49=1

Read more on center of an ellipse;

brainly.com/question/19507943

#SPJ1

6 0
2 years ago
Find the disciminant and the number of real roots for this equation x^2+3x+8=0
Dovator [93]
The disciminant is x=-8/5
6 0
3 years ago
Answer plzzzzzzz. I need the answer soonnnnnn
ikadub [295]

Step-by-step explanation:

Scale factor=small length /Large length

=7/28

<h3> =1/2 or 0.5</h3>
6 0
3 years ago
F it rained on 3 days out of 20 days, on what percent of the days did it rain?
Dahasolnce [82]
Percent means per 100/ out of 100.

3/20= x/100

20*5=100
3*5=15

15=x

Final answer: 15%
6 0
3 years ago
Read 2 more answers
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