Answer:
θ = 37°
Step-by-step explanation:
The missing angle is θ
cos θ = 4/5
cosθ = 0.8
cos^(-1)(0.8) = 36.86≈ 37°
so θ = 37°
Answer:
3 to 4
Step-by-step explanation:
cause 4:3 can be written as 4/3 or 4 to 3
but 3 to 4 is written as 3:4 or 3/4
Answer:
3 to 4
Step-by-step explanation:
All of the other ratios are 4 to 3.
Answer:
59
Step-by-step explanation:
Average = 183/3 = 61
Two consecutive odd numbers differ by 2.
Hence, the numbers are 61-2, 61, 61 +2 or 59, 61, 63
The smallest is 59.
-5x + 7y = 62
Fill in the blanks with your x and y coordinates
( ________, _________)
To find the solution to the system of linear equations:
4x + 6y = 20
-5x + 7y = 62
We can use the method of substitution or elimination to solve for x and y. Let's use the elimination method:
1. Multiply the first equation by 5 and the second equation by 4 to eliminate the x variable:
20x + 30y = 100
-20x + 28y = 248
2. Add the two equations together:
(20x - 20x) + (30y + 28y) = 100 + 248
58y = 348
3. Divide both sides of the equation by 58:
y = 6
4. Substitute the value of y back into either of the original equations. Let's use the first equation:
4x + 6(6) = 20
4x + 36 = 20
4x = 20 - 36
4x = -16
x = -4
Therefore, the solution to the system of linear equations is:
(x, y) = (-4, 6)
3x2 - 2x + 4
3x2 + 6x + 4
7x2 - 2x + 4