Answer:
11a+2
Step-by-step explanation:
(7a+9)+(4a−7)
7a+4a+9-7
11a+2
Answer:
Step-by-step explanation:
Angles on a straight line add up to 180 so 180-135 equals 45. Vertically opposite angles are equal so the second angle inside the triangle equals 100. Henceforth, we can solve this equation:
x +45+100 = 180 (angles in triangle add up to 180)
x+145=180
x=35
Vertically opposite angles are equal so x will become 35.
Hope this helps!
The significant digits the product should have is 2
<h3>Multiplying scientific values</h3>
Scientific notations are expressed in the form A * 10^n
where
A is any real number between 1 and 10
n is any integer
When multiplying scientific notations, the final product must be to the scientific notation that has the least decimal place.
Since the least decimal place in the given measurement is 2, hence the significant digits the product should have is 2
Learn more on significant figure here: brainly.com/question/24491627
#SPJ1
Answer:
153.86
Step-by-step explanation:
Area of a circle = πr². where π =3.14, 3.14×7² =3.14×49= 153.86
<span>the answer would be 254.34</span>
