PLZZZ HELPPPPPPP LAST QUESTIONS LAST CHANCE FOR POINTSSSS REWARD BRAINLIESTT
2 answers:
Answer:
17)x=12, -7
18)x=+2, -2
19)(2x-5)(3x+1)
20)3(5x+4)(x-2)
Step-by-step explanation:
17) (x-12)(x+7)=0
x=12, -7
18)3x^2-12=0
3x^2=12
x^2=4
x=+2, -2
19)(ax+b)(cx+d)
Ax^2+Bx+C
A=6, B=-13, C=-5
ac=6
ad+bc=-13
bd=-5
a=2
b=-5
c=3
d=1
(2x-5)(3x+1)
20)3(5x^2-6x-8)
=3(5x+4)(x-2)
Hope I helped! And also, is this really college math? I'm in middle school and I know how to do it!
Can you give me brainliest, since I did all of them?
Answer:
question 19
(2x-5)(3x+1)
Step-by-step explanation:
question 19
6x^2-13x-5
6x^2 coefficient = 6
-13x coeddicient = -13
-5 is constant
multiply coefficient of first term by the constant
i.e. 6*-5= -30
get 2 factors of -30 whoose sum equals -13
-15 +2 = -13
rewrite to have
6x^2-15x+2x-5
3x(2x-5) the firs term
1(2x-5)
add up,
(3x+1)(2x-5)
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Step-by-step explanation:
11.68-0.48
= 11.20
11.20÷1.6
= 7.0 or 7
ahh this is the correct answer.
so if it helps don't forget to like and Mark me.
Yes, it is.
Formula X+1=3/4y is linear.
Answer:
$4.20
Step-by-step explanation:
you first do 1.75 divided by 5 which gives you .35
so you do .35 times 12 which gives you 4.2
it can not be a function because functions only have ONE input to each output
Tan(30deg) = n/rt(3)
1/rt(3) = n/rt(3)—> n=1
sin(30deg) = 1/m
1/2=1/m—> m=2
Thus m=2 ,n=1
