Is this right?

[christina18]

what is the maximum product of two numbers having a sum of 36?
a. 320 b. 361 c. 324 d. 400 i chose choice c


two angles are complementary. one angle is 15 degrees less than twice the other. find the measure of the larger angle.
a. 35 degrees b. 60 degrees c. 55 degrees d. 25 degrees
choice c

write a quadratic equation having solutions radical 3 and -4radical 3.
a. x^2+3radical (3x) -12=0
b. x^2-12=0
c. x^2-4radical (3x)+12=0
d. x^2-4radical (3x) -36=0
choice c

 

[soroban]

Hello, christina18!

What is the maximum product of two numbers having a sum of 36?
\(\displaystyle a)\;320\;\;\;b)\; 361\;\;\;c)\;324\;\;\;d)\;400\) . . . i chose choice c . . . Right!

Two angles are complementary.
One angle is 15 degrees less than twice the other.
Find the measure of the larger angle.
\(\displaystyle a)\;35^o\;\;\;b)\;60^o\;\;\;c)\;55^o\;\;\;d)\;25^o\) . . . choice c . . . correct!

Write a quadratic equation having solutions \(\displaystyle \,\sqrt{3}\,\)and \(\displaystyle \,-4\sqrt{3}\)
\(\displaystyle a)\; x^2\,+\,3\sqrt{3}x\,-\,12\:=\:0\;\;\;b)\;x^2\,-\,12\:=\:0\)
\(\displaystyle c)\; x^2\,-\,4\sqrt{3}x\,+\,12\:=\:0\;\;\;d)\;x^2\,-\,\sqrt{3}x\,-\,36\:=\:0\) . . . choice c . . . no

The equation would be:

\(\displaystyle \;\;\;\;(x\,-\,\sqrt{3})(x\,+\,4\sqrt{3})\;=\;0\)

\(\displaystyle \;x^2\,+4\sqrt{3}x\,-\,\sqrt{3}x\,-\,12\;=\;0\)

. . . . . . . .\(\displaystyle x^2\,+\,3\sqrt{3}\,-\,12\;=\;0\) . . . choice a