Answer:
B. -7
Step-by-step explanation:
f(x) = 4x + 5
To find the value of f(-3), replace all the x's in f(x) with -3.
f(x) = 4x + 5
f(-3) = 4(-3) + 5
f(-3) = -12 + 5
f(-3) = -7.
This makes your answer B, -7.
Answer:
30°
Step-by-step explanation:
<u>Angles and Quadrants:</u>
- 0° to 90° -- Quadrant 1
- 90° to 180° -- Quadrant 2
- 180° to 270° -- Quadrant 3
- 270° to 360° -- Quadrant 4
<u>Formula for Reference Angle in each Quadrant:</u>
<em> is the angle given</em>
- Quadrant 1 -- Reference Angle =
- Quadrant 2 -- Reference Angle =
- Quadrant 3 -- Reference Angle =
- Quadrant 4 -- Refence Angle =
Angle given is 150°, which according to first table, falls in Quadrant 2.
According to second table, the reference angle is found by subtracting 150° from 180°.
Reference Angle = 180° - 150° = 30°
Answer:
1200feet
Step-by-step explanation:
Given the the road's curve elevation modeled by the equation
y = 0.00005x^2 - 0.06x,
x is the horizontal distance in feet between the points where the road is at sea level and;
y is the elevation
The elevation the road is equal to sea level when y = 0
Substitute y = 0 into the equation and calculate x;
0 = 0.00005x^2 - 0.06x
0.06x = 0.00005x^2
0.06 = 0.00005x
x = 0.06/0.00005
x = 1200 ft
Hence they will place the stop sign at a horizontal distance of 1200feet
yo sento Yo no speak English