Answer: 77 seeds
Step-by-step explanation:
Given: The germination rate for zinnia seeds =78%
Let x be the total number of seeds he planted, then
The seeds germinated= 78% of x
⇒The seeds germinated= 0.78x
If James wants 60 zinnia plants for his yard, then it will give the equation
Hence, he should plant 77 seeds .
NOTE:
The Statement is what was provided, Reason is the justification (proof), Side Note is JUST FOR YOU so you understand why the answer for the Reason was chosen.
Answer:
18 , 20 , 22 and 24.
Step-by-step explanation:
Let the numbers be n , n + 2, n + 4 and n + 6.
So we have the following equation:
n + 3(n + 6) = 48 + n + 2 + n + 4
n + 3n + 18 = 48 + 2n + 6
4n + 18 = 2n + 54
2n = 36
n = 18
So the numbers are 18 , 20 , 22 and 24.
Answer:
I don't know
Step-by-step explanation:
We are tasked to solve for the smallest angle using the law of cosines given that the three sides of the triangle are 4,5 and 6.
a=4 , b=5, c=6
Angle 1:
cosA = 5² + 6² - 4² / 2*5*6
A=41.41°
Angle 2:
cos B = 4²+6² -5² /2*4*6
B= 55.77°
Angle C:
C = 180° - 41.41° - 55.77°
C = 82.82°
The smallest angle is A which is equal to 41.41°.