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jok3333 [9.3K]
3 years ago
8

Consider the equation:

Mathematics
1 answer:
snow_tiger [21]3 years ago
8 0

Answer:

x² + 2x - 15 = 0

x² + 2x + 1 = 16

(x + 1)² = 16

You can then go forward with that to solve it:

x + 1 = √16

x = -1 ± √16

x = -1 ± 4

x = 3, -5

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Lucy makes four pots with cups of macaroni in each pot. If of a cup of macaroni is needed for one serving, what is the most numb
padilas [110]
The answer is A, 32 servings. 
8 0
4 years ago
Write an equation in slope-intercept form for the line that passes through the point (-8, 2) and is perpendicular to the line y
tamaranim1 [39]

Answer:

y = -5x/4 - 8

Step-by-step explanation:

Two lines that are perpendicular have slopes that are opposite reciprocals.

Since the slope of the given line is 4/5, the opposite reciprocal of that is -5/4. So the equation has a slope of -5/4.

Since we know the coordinate of a point of the other equation, we can plug that into the point-slope form equation y - y1 = m(x - x1):

y - 2 = -5/4(x-(-8))

Simplify:

y - 2 = -5/4(x+8)

y - 2 = -5x/4 - 10

So the equation in slope-intercept form is:

y = -5x/4 - 8

3 0
3 years ago
Help answer both plz!
Sphinxa [80]

Answer:

3.6666 (I didn't round)

Repeating decimal

Step-by-step explanation:

We know that

2/3

is the same as

2÷3

Therefore:

3 2/3 = 3+(2÷3) = 3 + 0.6666 =3.6666

A repeating decimal is one that keeps going and repeats a pattern. This is decimal keeps going and repeats a pattern so it is a repeating decimal.

A terminating decimal is one that terminates or ends. This decimal does not terminate or end. It keeps going.

Hope this helped.

6 0
3 years ago
No clue how to do this someone please help
Free_Kalibri [48]

Answer:

I recommend trying this it is real tutors that explain to you on how to do it it's free

7 0
3 years ago
Y=6x 2x+3y=20 solving equation using substitution
RUDIKE [14]

Answer:

x = 1, y = 6

Step-by-step explanation:

y = 6x

2x + 3y = 20

Plug y as 6x in the second equation and solve for x.

2x + 3(6x) = 20

2x + 18x = 20

20x = 20

\frac{20x}{20}= \frac{20}{20}

x = 1

Plug x as 1 in the first equation and solve for y.

y = 6(1)

y = 6

6 0
4 years ago
Read 2 more answers
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