Answer:
She incorrectly multiplied 15 X 1/4
Step-by-step explanation:
Answer:
x=11(12y-15)
Step-by-step explanation:
4x(3y-2)=7x+11
12xy-8x=7x+11
12xy-8x-7x=11
12xy-15x=11
x(12y-15)=11
x(12y-15)/(12y-15)=11/(12y-15)
x=11/(12y-15)
Answer:
10.5 ft
Step-by-step explanation:
In ΔQRS,
- m∠S=90°
- m∠R=29°,
- SQ = 5.8 feet.
See the diagram below.
The triangle is a Right Triangle,
Using trigonometric ratios,

Answer:
1/2
Step-by-step explanation:
9/16 is equal to 0.5625
. The closest number to this is 0.5 which is the same as 1/2
Answer:
Therefore the mean and standard deviation of his total score if he plays a full 18 holes are 160 and
respectively.
Step-by-step explanation:
Given that,
For the first 9 holes X:
E(X) = 80
SD(X)=13
For the second 9 holes Y:
E(Y) = 80
SD(Y)=13
For the sum W=X+Y, the following properties holds for means , variance and standard deviation :
E(W)=E(X)+E(Y)
and
V(W)=V(X)+V(Y)
⇒SD²(W)=SD²(X)+SD²(Y) [ Variance = (standard deviation)²]

∴E(W)=E(X)+E(Y) = 80 +80=160
and
∴



Therefore the mean and standard deviation of his total score if he plays a full 18 holes are 160 and
respectively.