Answer:
x = 17/7 or 2.428571429
Step-by-step explanation:
7x - 7 = 10
→ Add 7 to both sides to isolate 7x
7x = 17
→ Divide both sides by 7 to isolate x
x = 17/7 or 2.428571429
Answer: top triangle = 10 x 4 = 40cm^2 / 2 = 20cm^2
Rectangle = 10 x 6 = 60cm^2
Right hand triangle = 6 x 4 = 24cm^2 / 2 = 12cm^2
Step-by-step explanation:
For top triangle we do 10 - 6 to get shortest side
Rectangle - ignore 14 and use top 10 cm
Finally triangle on right hand - do 14cm - 10 to get base side. Base side is 4cm.
Formula for area of triangle = b x h / 2
Note: ^2 is just to the power of 2 or squared
I hope u found this answer beneficial.
Have a nice day and Christmas holidays m8 :-)
Two the smaller right angled triangles are similar. Therefore:
Answer: a) 4.5
Answer:
B = (-11, -17)
C = (11, -17)
Step-by-step explanation:
Reflection over the x-axis is accomplished by changing the sign of the y-coordinate:
(x, y) ⇒ (x, -y) . . . . . reflection over x-axis
Reflection over the y-axis is accomplished by changing the sign of the x-coordinate:
(x, y) ⇒ (-x, y) . . . . . reflection over the y-axis
__
B = (-11, -17)
C = (11, -17)
__
<em>Check</em>
Reflection over both axes negates both coordinates. It is equivalent to reflection over the origin, or rotation 180°.
A(-11, 17) ⇒ C(11, -17) . . . . . both coordinates change sign
Complete Question
The complete question is shown on the first uploaded image
Answer:
The 95% confidence interval is 
This means that there is 95% chance that the true population mean is within this interval
Step-by-step explanation:
From the question we are told that
The sample size is n = 30
The sample mean is 
The population standard deviation is 
Given that the confidence level is 95% then the level of confidence is evaluate as


Next we obtain the critical value of
from the normal distribution table , the values is

Generally the margin of error is mathematically represented as

substituting values


The 95% confidence interval is mathematically represented as

substituting values

