If u is < 1,5> find ||u|| a.4 b.6 c. square root 6 d. square root 26

u = <1,5> is a vector in the form <a,b> with a = 1 and b = 5.

||u|| = sqrt(a^2+b^2) is the magnitude or length of the vector

||u|| = sqrt(1^2+5^2)

||u| = sqrt(26)

The answer is choice D

Check out the attached image below for a visual.

37/3

step-by-step explanation:

step 1: simplify both sides of the equation.

7x+8(x+

1

4

)=3(6x−9)−8

7x+(8)(x)+(8)(

1

4

)=(3)(6x)+(3)(−9)+−8(distribute)

7x+8x+2=18x+−27+−8

(7x+8x)+(2)=(18x)+(−27+−8)(combine like terms)

15x+2=18x+−35

15x+2=18x−35

tep 2: subtract 18x from both sides.

15x+2−18x=18x−35−18x

−3x+2=−35

step 3: subtract 2 from both sides.

−3x+2−2=−35−2

−3x=−37

step 4: divide both sides by -3.

−3x

−3

=

−37

−3

x=

37

3