Answer:
personally i think x=6
Step-by-step explanation:
but heres how i got it cross multiiply 7.5/4 and x/3.2
witch makes 24=4x then divide by 4 and you get x=6
so.... yeah i think x=6
if brainiest is earned its greatly appreciated
Answer:
It is A.
Step-by-step explanation:
also, this is one question. A, B, C and D are just answers.
Answer:
The value of the test statistic is 
Step-by-step explanation:
The null hypothesis is:

The alternate hypotesis is:

Our test statistic is:

In which X is the sample mean,
is the null hypothesis value,
is the standard deviation and n is the size of the sample.
In this problem:

So



The value of the test statistic is 
Step-by-step explanation:
V = 4/3 × 22/7 × 3³
= 4/3 × 22/7 × 27
= 113.14
Answer:
z =15cm and
y=9.0cm
Step-by-step explanation:
Use sine rule
12/ sin53 = z / sin 90
Z = 12 x sin 90 / sin 53
Z = 15cm
To find y the angle opposite to y will be 180-(90+53)=37º
So
15/sin 90= y/sin37
y= 15 x sin37 /sin 90
y = 9.0cm