Answer:
The measure of angle ERK is 55°
Step-by-step explanation:
step 1
Find the measure of arc EK
we know that
The diameter divide the circle into two equal parts
In this problem
EOR is a diameter
see the attached figure to better understand the problem
so
arc EK + arc RK=180°
substitute the given values
arc EK + 70°=180°
arc EK=180°-70°=110°
step 2
Find the measure of angle ERK
we know that
The inscribed angle is half that of the arc it comprises.
m∠ERK=(1/2)[arc EK]
substitute
m∠ERK=(1/2)[110°]=55°
Answer:
area = 16 cm²
Step-by-step explanation:
area of rectangle = 3x4 = 12
area of triangle = 2x4x0.5 = 4
12 + 4 = 16 cm²
another way is :
1/2(b1+b2)(h) = area
1/2(3+5)(4) = 16 cm²
Easiest way to solve this is to try plugging in the values from the table into the equations
Let’s try y = x + 4
The first coordinates from the table says
(-9 , -5 )
-5 = -9 + 4
-5 = -5
They match, so y = x + 4 is the right answer. You can try plugging in the other variables if your still uncertain
Question A) First, 5 cubed is 75. 5 to the power of -4 is 0.0016. The answer is 0.12.
Question B) The answer is 177147.
Question C) The answer is 0.000977.
Question D) The answer is 0.020408
If these are wrong, I'm so sorry, but this was a bit confusing. Just know you're a smart kid and you can do this!