Answer:
x = 13
Step-by-step explanation:
These angles are vertical which means they’re EQUAL to each other:
6x + 3 = 81
6x = 81 - 3
6x = 78
x = 13
Answer:
D year 15
Step-by-step explanation:
Given:
y= 8x^2-40x+6
year is the best prediction for when 1206
Finding value of x for y=1206
8x^2-40x+6= 1206
8x^2-40x+6-1206=0
8x^2-40x-1200=0
Solving the above by quadratic formula:
x= 
= 
x= 15 and x= -10
As year can not be negative, hence correct answer is
D: year 15!
Answer:
10cm, 16 cm, 18 cm,
Step-by-step explanation:
The lengths of the sides of a triangle are in the extended ratio 5: 8.9. The perimeter of the triangle is 44 cm.
Sum of proportion = 5 + 8 + 9
= 22
Length of side a
5/22 × 44 = 10 cm
Length of side b
8/22 × 44 = 16 cm
Length of side a
9/22 × 44 = 18 cm
The lengths of the sides of the triangle in cm are 10cm, 16 cm, 18 cm,
Answer:
c. 30
Step-by-step explanation:
60/2=30 can i get brainliest?
