Answer:
x = 5, y = 20
Step-by-step explanation:
if y = 4x and 3x+2y = 55 then we can subtitude y as x.
We know that y = 4x so we can write 4x wherever we see y.
3x + 2y = 3x + 2(4x) = 55
3x + 8x = 55
11x = 55
x = 5.
And if y = 4x = 4(5)
y = 20
Answer:
10.56%
Step-by-step explanation:
We are given A compact disc is designed to last an average of 4 years with a standard deviation of 0.8 years.
We are supposed to find What is the probability that a CD will last less than 3 years
We will use z-score formula:
Substitute the values in the formula
Now refer the z score table
So, the value of -1.25 is 0.1056 =
Thus , the probability that a CD will last less than 3 years is 10.56%
19) 15/a = 3/2
Start by cross multiplying....
3a = 30
Divide both sides 3
a = 10
21) 2/7 = 4/d
2d = 28
d= 14
23) 8/p = 3/10
80 = 3p
p = 26.66
25) 2 / -5 = 6/t
2t = -30
t = -15
Answer:
The possible midpoints are (5.5,8) and (5.5,3)
Step-by-step explanation:
Given
Required
Determine the midpoint of DE
First, we need to determine the coordinates of E
If E is to the right of DE;
Hence, the coordinate is (11,16)
Else:
Hence, the coordinate is (11,6)
<em>The possible midpoints are (5.5,8) and (5.5,3)</em>
Distance traveled = 360 meter
Time taken = 8:04 - 8:01 = 3 min= 180 s
Velocity = 360/180 = 2 m/s
Hope this helps!