-7(5x-8)
=-35x + 56
which is basically 56-35x if u swap it around
By definition we have:
sineA = (C.O) / (h)
cosA = (C.A) / (h)
Where,
C.O: opposite leg
C.A: adjacent leg
h: hypotenuse
Substituting values:
sinA = (48) / (50)
cosA = (14) / (50)
Answer:
sineA = (48) / (50)
cosA = (14) / (50)
Option 2
2, 3, 4, 4, 7
Mean: 2 + 3 + 4 + 4 + 7 = 20/5 = 4
Mode: 4
Median: 4 (middle number)
Range: highest value - lowest value = answer
Range: 7 - 2 = 5
Mean: 4
Mode: 4
Median: 4
Range: 5
72 ÷ 2= 36
36 × 4= 144
144 ÷ 3= 48
Remark. The easiest way to solve this is to make the coefficients of one of the letters = to the same coefficient in the other equation
Set up and solve
x + y = 24
3x + 5y = 100 Multiply the first equation by 3
<u>3x + 3y = 72 </u> Subtract
2y = 28 Divide by 2
y = 28/2
y = 14 <<<<<< Answer for y
Step 2
Solve for x
x + y = 24
x + 14 = 24 Subtract 14 from both sides.
x = 24 - 14
x = 10 <<<<Answer for x
Check to see if it works.
3x + 5y = 100
3*10 + 5*14 = 100
30 + 70 = 100 Checks.
There are 10 three point question
There are 14 five point questions.
