The answer is a=2:
Equation=
Open the parenthesis first:
-20+8a+3a-12=12-6a-5a
Add all the a's and the numbers together:
-32+11a=12-11a
Lastly put all a's on one side and the numbers on the other side:
22a=44
Divide the numbers and get:
a=2
The measure of the angle the ladder makes with the ground is 82.2°
A triangle in which one angle is 90° is called a right angled triangle.
According to the problem,
We know that in a right angled triangle,
cosФ = , where Ф is the angle between base and hypotenuse.
Here, cosФ =
⇒ Ф = 82.2°
∴ The measure of the angle the ladder makes with the ground is 82.2°
Find out more information about the measure of angles of right angled triangle here: brainly.com/question/8074395
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Answer:
240
Step-by-step explanation:
60% of 150 is 90
so 90 + 150= 240
1) How tall are Sally and Anna if Sally is 0.1 m taller than Anna and their combined height is 3.16 metres?
Sally _ Anna _
2) Find these simple quantities
a. 1/5 of $50
b. 10% of $40
Thank you!