$\bf \begin{array}{ccllll}
used&new\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
1&3\\
u&720
\end{array}\implies \cfrac{1}{u}=\cfrac{3}{720}\implies \cfrac{720\cdot 1}{3}=u$

4 0

2 years ago

Read 2 more answers

What should be added 0.7 to get 1

sveticcg [70]

Answer:

0.3

Step-by-step explanation:

x is the number to be added to 0.7 to have a sum of 1.

$0.7 + x = 1$

$x = 1 - 0.7$

$x = 0.3$

5 0

2 years ago

Read 2 more answers

The length of the hypotenuse of a 30-60 -90 triangle is 14 units. what is the length of the short leg

kifflom [539]

Recall that the short leg is the side opposite the 30 degrees angle. And the ratio of the short leg to the hypotenuse is 1:2.

Let the length of the short leg be x, then,

$\cfrac{x}{14}=\cfrac{1}{2}\\ \\\Rightarrow2x=14\\ \\\Rightarrow x=\cfrac{14}{2}=7$

6 0

3 years ago

Solve x show your work

Bezzdna [24]

Answer:

55+x+74+54= 180 degree ( being the sum of all angle of the triangle )

or, 183 +x = 180degree

or, x=(180-183)degree

or, x= -3degree ans

4 0

2 years ago