Answer:
Cost of Trumpets: $174
Cost of Clarinets: $149
Cost of Violins: $89
Step-by-step explanation:
Got it correct
Answer:
X=4
Step-by-step explanation:
(3X/2) - (X/4) = 5
(6X-X)/4 = 5
(5X)/4 = 5
5X = 20
X = 4
<D = 360 - (80 + 115 + 100)
<D = 360 - 295
<D = 65
Answer
<D = 65°
Answer:
1) 
2) 
3) x=30
4) x= -4/3
Step-by-step explanation:
Use the Pythagorean theorem to find the missing angle.
In the formula, the c is the length of hypotenuse, so
20*9=6x
180=6x
x=30
4(3x+2)=6x
12x+8=6x
6x=-8
x= -4/3
Answer:
<COB = 50°
Step-by-step explanation:
We can say that m<AOC + m<COD + m<DOB = 180° because the three mentioned angles form a straight line. We can substitute to get:
3x + 94 + x + 18 + 2x - 4 = 180
Then, we can combine like terms:
6x + 108 = 180
6x = 72
x = 12
We can see that m<COB is the sum of m<COD and m<DOB. We can wrote an equation to model the situation:
m<COB = m<COD + m<DOB
m<COB = x + 18 + 2x - 4
m<COB = 3x + 14
We have the value of x, so we can substitute that in:
<COB = 3(12) + 14
<COB = 36 + 14
<COB = 50°
