hbansal hbansal

02-11-2020
Mathematics

contestada

Q(–1, a) is 4 √5 units away from P(3, –2). Find all possible values of a.

Respuesta :

surjithayer10 surjithayer10

02-11-2020

Answer:

a=6,-10

Step-by-step explanation:

[tex]4\sqrt{5}=\sqrt{(3+1)^2+(-2-a)^2} \\squaring\\80=16+(2+a)^2\\80-16=(2+a)^2\\(a+2)^2=64\\taking~square ~root\\\\a+2=\pm 8\\either \\a+2=8,\\a=8-2=6\\or\\a+2=-8\\a=-8-2=-10[/tex]

Answer Link

Otras preguntas

Only one way to get out from home should be included in a fire escape plan. True or false

Subtract: 66 feet 3 inches - 9 inches.

Which of these allowed the united states to send "all aid short of war" to britain despite its status as a neutral nation early in world war ii?

How many cubic feet of soil can be carried in a truck with a bed which measures 16 feet long by 7 feet wide by 6 feet deep?

The oracle at delphi is said to prophecy on behalf of which ancient greek god

In romeo and juliet what warning does the prince give to anyone who breaks the peace again

1.5 % of what number is 60?

What did president eisenhower believe was necessary to win the cold war?

how many molecules are there in 50.00 moles of glucose

Why would shakespeare chose to write Romeo and Juliet's first conversation in this form?