Answer:
X^2 +x -6 or the last option
Step-by-step explanation:
Or means not both
if people study both then the number of people studying either french or spanish is 7 less than the total number of peple studig french and spanish because thoe 7 are common to both groups
9+14=total=23
23-7=16 people studing either
proabblity=desiredoutcmes/totalpossibe
desired=16
total=30
so 16/30=8/15 is the probablity
Answer:
Step-by-step explanation:
Answer:
∆ABC=∆ADE ............by AA test of similarity
CAB=EAB....................COMMON ANGLE
CBA=EDA....................EACH 90°
AB/AD =CB/ED.........CSST
9/6=3/x
3/2=3/x
x=2 x 3/3
<h2>x=2 </h2>
Answer:
60°
Step-by-step explanation:
The definition of cosine tells you ...
cos(β) = 3/6 = 1/2
β = arccos(1/2) . . . . use the inverse cosine function to find the angle
β = 60°
_____
The ratio of side lengths in a 30°-60°-90° triangle (one of the "special" triangles), is ...
1 : √3 : 2
The 2 : 1 ratio of longest to shortest side in this right triangle is a clue that the largest acute angle is 60°. It also tells you that x = √3 times the short side length, so is x = 3√3.
