Answer:
7 )
x =
8 )
Step-by-step explanation:
7 ) 8)
In Δ ABC In Δ XYZ
∠ C = 45° ∠ X = 60°
∠ A = 90° ∠ Y = 90°
To Find :
x = ?
y = ?
Solution:
We Know
In Δ ABC
∠ C = 45°
∠ A = 90°
∴ ∠ B = 45° ......Angle sum property of a triangle i.e 180°
∴ Δ ABC is an Isosceles Triangle
∴ AC = AB = x =
Now appplying Trignometry identity we get
Now In Δ XYZ
∠ X = 60°
∠ Y = 90°
∴∠ Z = 30° . .....Angle sum property of a triangle i.e 180°
Now appplying Trignometry identity we get
Now,
Step-by-step explanation: 20+10=30
30-22.68 =7.22
1 way to receive his change: 1 five dollar bill, 2 one dollar bills, 6 dimes and 8 pennies.
1 different way to receive his change : 7 one dollar bills, 13 nickels and 3 pennies.
7x - 9y = 23 x = 11
7*11 - 9y = 23
77 - 9y = 23
-9y = 23 - 77
-9y = - 54
y = -54/-9
y = 6
I hope this explains it.
Answer:
step 3 addition: 20 + 9 = 29
step 4 subtraction: 29 - 2 = 27
solution 27
Step-by-step explanation:
since there's no more multiplication or division, you add and subtract from left to right