The value of k is
<h3>How to solve the simultaneous equation?</h3>
Given:
x-y=k.............(eq i)
2x²+y²-15..............(eq ii)
We would make y the subject formula in eq ii
2x²+y²-15= 0
2x² + y²= 15
y²= 15-2x²
y=
...........(eq iii)
Substitute the value of y into eq i
x-(
= k
x- (
= k
k= 
Read more about simultaneous equations here:
brainly.com/question/16863577
#SPJ1
Answer:
It would be A!
Step-by-step explanation:
.08 times .50 would be 0.04. (It's a quick way to be able to solve problems similar to that! :)
Answer:
Step-by-step explanation:

X - Heights of women aged 20 to 29: X is N(64, 2.7)
Y - Heights of men aged 20 to 29: X is N(69.3, 2.8)
a) X=6'=72"
Z=
b) Y = 72"
z=
c) 72' women can be taken as very tall but men moderately taller than average
d) Y<5'5" =65"
Z<
e) X>73"
Z>
Almost 0% can be taken
f) IQR =Q3-Q1
Z scores =
Answer:
v
x
5
−
2
v
x
4
−
8
x
4
+
3
v
x
3
+
24
x
3
−
4
v
x
2
−
40
x
2
+
v
x
+
56
x
+
8
x
−
40
v
x
5
-
2
v
x
4
-
8
x
4
+
3
v
x
3
+
24
x
3
-
4
v
x
2
-
40
x
2
+
v
x
+
56
x
+
8
x
-
40
Step-by-step explanation: