3x^2-7x-2
doesn't factor
You can not factor this
I hope that's help !
Answer:
Step-by-step explanation:
Let
We rewrite as an exponential equation to obtain;
We rewrite both sides of the equation as an index number to base 5.
Since the bases are the same, we equate the exponents to obtain;
Divide both sides by 2;
Answer:
The height of the building is 16 ft.
Step-by-step explanation:
It is given that a painter leans a 20-ft ladder against a building. The base of the ladder is 12 ft from the building.
It means the base of the right angled triangle is 12 ft and the hypotenuse is 20 ft.
Let the height of the building be x.
Using Pythagoras theorem,
Taking square root both sides.
Therefore the height of the building is 16 ft.
B. 90
C. 60
D. 150
Answer: Hello there!
If you have a line (with a plane angle of 180°) and a segment that cuts the line, the two angles generated by the line and the segment are supplementary, and the sum of them should be equal to 180°
if one of the angles is 30°, then the other angle should be:
180° - 30° = 150°
then the right answer is option D.
Answer:
SR =3
Step-by-step explanation:
SR + RQ = SQ
2x+23 + x+21 = 14
Combine like terms
3x+44 = 14
Subtract 44 from each side
3x+44-44= 14-44
3x = -30
Divide each side by 3
3x/3 = -30/3
x = -10
SR = 2x+23 = 2(-10)+23 = -20+3 =3
Answer: 3
Step-by-step explanation:
We can start by making an equation.
Since we know the total length of SQ we can add SR + RQ to equal SQ.
The parenthesizes are not necessary but they help for understanding the parts of the equation.
We will remove the parenthesizes and combine like terms.
Now subtract 44 from both sides to cancel it out from the side with x.
Now divide by 3 to isolate x.
So x = -10.
Now we can plug in the value of x into SR.
Solve
So SR = 3