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DiKsa [7]
3 years ago
11

B2 - 7b + 12 = 0

Mathematics
2 answers:
olga_2 [115]3 years ago
6 0
B2-7b+12=0
(b-3)(b-4)=0
b= 3 or 4
JulijaS [17]3 years ago
3 0

Answer: (b - 4)(b - 3); b = 4 and 3

Step-by-step explanation:

ima assume these are exponents since you didnt care to correctly write the equation.

What two numbers multiply to equal 12, but add to equal -7? That's -4 and -3

So the factored form of this trinomial is (b - 4)(b - 3) = 0. Make each of these expressions equal to 0 in order to get your answer.

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Write the equation of the line through the points (-6, -19) and (2, 5).
Lelechka [254]

Answer:

y = 3x - 1

Step-by-step explanation:

The slope of a line passing through the two points

P = (x1. y1) and Q = (x2, y2) is given by

m= (y2-y1)/(x2-x1)

We have that x1= -6, y1= -19, x2= 2, y2= 5

m=3

Now, the y-intercept is b=y1 - mx1 (or b= y2 - mx2, the result is the same).

b= -19-(3)(-6)

b= -1

y = 3x - 1

5 0
2 years ago
Find the measure of one exterior angle of a regular octagon
nydimaria [60]

Answer:

each of the eight angles measures 45 degrees

Step-by-step explanation:

The sum of all exterior angles of any polygon always measures 360 degrees.

If it's 'regular' then all angles have the same measures.

If it's an octagon, then it has 8 sides.

360 divided by 8 = 45

8 0
3 years ago
Which expression can be used to find the sum of the polynomials?<br><br> (9 – 3x2) + (–8x2 + 4x + 5)
timama [110]

Answer:

It may not be right but try D.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
6x+6y=-6, 5x+y=-13<br>Show your process please<br>Solve the linear equation​
lisabon 2012 [21]

Answer: Rewrite equations:

5x+y=−13;6x+6y=−6

Step: Solve5x+y=−13for y:

5x+y=−13

5x+y+−5x=−13+−5x(Add -5x to both sides)

y=−5x−13

Step: Substitute−5x−13foryin6x+6y=−6:

6x+6y=−6

6x+6(−5x−13)=−6

−24x−78=−6(Simplify both sides of the equation)

−24x−78+78=−6+78(Add 78 to both sides)

−24x=72

−24x

−24

=

72

−24

(Divide both sides by -24)

x=−3

Step: Substitute−3forxiny=−5x−13:

y=−5x−13

y=(−5)(−3)−13

y=2(Simplify both sides of the equation)

Answer:

x=−3 and y=2

Step-by-step explanation:

5 0
3 years ago
<img src="https://tex.z-dn.net/?f=%7B%28%5Cfrac%7B4%7D%7B3%7D%29%20%5E%7B-1%7D%20-%20%28%5Cfrac%7B1%7D%7B4%7D%20%29%5E%7B-1%7D%2
neonofarm [45]

Step-by-step explanation:

(4/3)–1 = 3/4 and (1/4)–1 = 4/1

now we have,

(3/4 - 4)–1 = (-13/4)–1

= -4/13

7 0
3 years ago
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