3^x + 3^2 = 90
Simplify the known power:
3^x + 9 = 90
Subtract 9 from both sides:
3^x = 81
Take the cubic root of both sides:
X = 4
Answer:
4 bottles
Step-by-step explanation:
Given


Required
Determine the number of bottles
Represent the number of bottles with N
<em>This implies that N bottles of </em>
<em> fit into </em>
<em> of fertilizer. The relationship between them is:</em>
<em></em>


Multiply through by 8




<em>Hence, there are N = 4</em>
y = 90°
Solution:
The reference image for the answer is attached below.
The sum of opposite interior angles is equal to the exterior angles.
m∠BAC + m∠ACB = 110°
m∠BAC + 70° = 110°
m∠BAC = 110° – 70°
m∠BAC = 40°
m∠BAD + m∠DAC = 40°
x + x = 40°
2x = 40°
Divide by 2 on both sides of the equation.
x = 20°
In triangle DAC,
Sum of all the angles of a triangle = 180°
m∠DAC + m∠ACD + m∠CDA = 180°
20° + 70° + m∠CDA = 180°
90° + m∠CDA = 180°
m∠CDA = 180° – 90°
m∠CDA = 90°
∠CDA and y lies on the straight line. So they form a linear pair.
y + m∠CDA = 180°
y + 90° = 180°
y = 180° – 90°
y = 90°
The value of y is 90°.
You would have to do 1/3x2/5 which is 2/15. So 2/15 of the girls in the school play sports.
Answer:
7.75
Step-by-step explanation:
56-27-21-0.25=7.75