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sweet [91]
3 years ago
8

Solve the system of equations by substitution. -5x + y = 3 7.5x - 1.5y = 3

Mathematics
1 answer:
Sonbull [250]3 years ago
7 0
Multiple the first equation by 1.5 and solve the equation then
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Hey, Its the same person. This is Algebra 2. Please Help!
suter [353]

Answer:

first option

Step-by-step explanation:

Given

f(x) = \frac{2x^2+5x-12}{x+4} ← factorise the numerator

     = \frac{(x + 4)(2x-3)}{x+4} ← cancel (x + 4) on numerator/ denominator

     = 2x - 3

Cancelling (x + 4) creates a discontinuity ( a hole ) at x + 4 = 0, that is

x = - 4

Substitute x = - 4 into the simplified f(x) for y- coordinate

f(- 4) = 2(- 4) - 3 = - 8 - 3 = - 11

The discontinuity occurs at (- 4, - 11 )

To obtain the zero let f(x) = 0, that is

2x - 3 = 0 ⇒ 2x = 3 ⇒ x = \frac{3}{2}

There is a zero at ( \frac{3}{2}, 0 )

Thus

discontinuity at (- 4, - 11 ), zero at ( \frac{3}{2}, 0 )

7 0
3 years ago
At the honda dealership,45% of all cars sold include a sunroof. If this sold 247 cars last week, about how many would you expect
sertanlavr [38]
It is 45% of 247 move the the decimal on the 45% two places to the right, then you should get .45. Of means multiply so .45*247 should get you the answer of 111.15 that's how you find the percent of this number. If you round the answer you would get 111 so about 111cars had a sunroof
7 0
3 years ago
I need this answered ASAP.
expeople1 [14]
The answer for this has to be B)45
6 0
3 years ago
Which relationships have the same constant of proportionality between y and x as the equation y
sdas [7]

Answer:

I'm not too good at this but I got 10/4??

Step-by-step explanation:

please let me know if I'm right!

6 0
3 years ago
Is in,general, how tall are giraffes? A statistical question or non statistical question
exis [7]

the height of (my favorite animal if i might add) an adult male giraffe can grow up to 16-20 feet while the females grow up to 15 feet

4 0
3 years ago
Read 2 more answers
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