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Veronika [31]
3 years ago
13

Need help on 1 and 2 plzzz help !!!!!

Mathematics
2 answers:
Vesna [10]3 years ago
6 0
Subtract 1 to 13. so you got 12. divide 4 so you can get the S by it self.S=3.
liberstina [14]3 years ago
6 0
S equals 3 muitiply by 4 thats 12 then its equals 13           
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Please help explanation if possible
posledela

Answer:

y =3x - 5

Step-by-step explanation:

Well one of the way to do this question is the formula given below your question, but for me, i rather do it this way

OK they gave u y=3x - 12

And they say another line is parallel, once u see the word parallel means they have the same angle, same slope, same gradient ( sorry if I give u the wrong terms, since I learn mine in Malay)

So first u got to understand the slope-intercept form

y = mx + c

y is your y coordinate

x is your x coordinate

m is your gradient ( as in how much the line slants)

c is the y - intercept, as in, if u draw a graph, the y-coordinate where your line touches the y-axis (the vertical line)

So since the say the both lines are parallel, so both of their "m" is the same that is 3. Why? Cuz just compare

y = mx + c

y = 3x - 12

Therefore the m is 3

Therefore u alredy got your first value, so put it in your slope intercept form

y = mx + c

y = 3x + c

Now how to find c? Very easy, just put in the value of y and x from the coordinate ( that the line youre finding is on) they gave u, just put the value in

They gave u

(1, - 2)

So when x = 1, y = - 2

Therefore put it in

y = 3x + c

-2 = 3 (1) + c

c = - 5

Since now u have your m and c value, your slope intercept form is done, just put it in

y = mx + c

y = 3x + (-5)

y = 3x -5

6 0
2 years ago
What are the zeros of the quadratic function f(x) = 6x^2 + 12x - 7?
Sergeeva-Olga [200]

Answer:

-12 + √(144- 4(-42)/12

-12 + √312/12

-12 + 17.6 / 12

= +.47 and -.47

4 0
2 years ago
Which of the following(s) is true of a rectangle?
arsen [322]
<h2>Explanation:</h2>

Let's take a look at all of our options.

A. it is also a square

  • A rectangle is NOT <em>always </em>a square because a square has congruent sides, so that means all four of its sides are <em>always </em>equal.
  • A rectangle <em>can </em>be a square but it can also not be a square, so therefore A cannot be an option because it is not always true about a rectangle.

B. the sum of its angle measures is 360

  • This is true because every quadrilateral's angle measures will add up to 360 degrees, no matter what. This is like how a triangle's angle measures always add up to 180 degrees.
  • B is an option because it is an ALWAYS true statement.

C. it has four congruent angles

  • A rectangle always has 90 degree angles, giving it its shape.
  • Since a rectangle always has the same-degree angles, that means that it DOES have four congruent angles.
  • C is also an option because it is always true.

D. it has four congruent sides

  • A rectangle does not ALWAYS have four congruent sides. Say for example a rectangle has a longer length than its width.
  • A square has four congruent sides, but a rectangle is not always a square, therefore this option is not applicable for a rectangle since it is not always true.
<h2>Answers:</h2>

B and C are always true of a rectangle.

7 0
3 years ago
Read 2 more answers
Is the line through points P(0, –9) and Q(2, –8) perpendicular to the line through points R(1, 4) and S(3, 3)? Explain
Serjik [45]
The quickest way to tell if a line is perpendicular is to find the slope, so you'll need to get the slope for both lines

PQ = ((-8) - (-9))/(2 - 0) = 1/2

and, for reference, a perpendicular slope is the negative reciprocal of the original (so we're looking for -2)

RS = (3 - 4)/(3 - 1) = -1/2

so, no, these two lines aren't perpendicular because the slope of RS is only the negative of PQ, not the negative <em>reciprocal</em>.
3 0
3 years ago
Read 2 more answers
Write the absolute value and the opposite values of the numbers listed in the table. 15,-93,56,-87
nirvana33 [79]

Answer:

initial value         opposite value             absolute value

15                                -15                                   |15|

-93                                93                                 |93|

56                                 -56                                 |56|

-87                                87                                   |87|

Step-by-step explanation:

3 0
3 years ago
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