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jarptica [38.1K]
3 years ago
6

Consider this expression.

Mathematics
1 answer:
Naily [24]3 years ago
6 0

Answer:

Step-by-step explanation:

Hello, first we can develop (x+a)(x+b)

(x+a)(x+b)=x(x+b)+a(x+b)=x^2+bx+ax+ab=x^2+(a+b)x+ab

We know that this should be equal to

x^2+x-72

So, we can identify the coefficients of the like terms

1 = 1 (terms in x^2)

1 =  a + b (terms in x)

-72 = ab (constant term)

72 is 8 * 9 so, -72=9*(-8)

and we have 9 - 8 =1

so, a = 9 and b = -8

\Large \boxed{\sf \bf \ x^2+x-72=(x+9)(x-8) \ }

Thank you

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Determine whether the graphs of y =-9x+12 and y=1/3x-12 are parallel, perpendicular, coincident
notka56 [123]

1) graphs y = -9x + 12 and y = 1/3x - 12 are not coincident.

2) The graphs are not parallel, because the angular coefficients are not equal

3) The condition of perpendicularity:

k_1\cdot k_2=-1, where k_1=-9;~~~ k_2=\frac{1}{3}


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8 0
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How many minutes are equal to 2 hours 20 minutes
ivann1987 [24]

Answer:

140

Step-by-step explanation:

tell me if I'm wrong

60+60+20=140

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3 years ago
-5=n-8/4<br><br> What is happening to the variable? <br><br><br> How do you solve for the variable?
san4es73 [151]

Answer:

n=-3

Step-by-step explanation:

Alrighty, now if I understood the problem correctly, we can simplify it to:

-5=n-2

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8 0
3 years ago
Read 2 more answers
Help with this proof
JulijaS [17]
If you draw diagonal EG, then triangle EFG is congruent to triangle EHG since they have 3 congruent sides.

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7 0
4 years ago
3(4+2)^2 <br> show your steps
miss Akunina [59]

Answer:

<h2><u><em>108</em></u></h2>

Step-by-step explanation:

3(4+2)^2

show your steps

3 * (4+2)² =

3 * 6² =

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108

6 0
3 years ago
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