Answer:
-28
Step-by-step explanation:
h(4)=-2(4)^2+4
-32+4=-28
Answer:
x = 20°
Step-by-step explanation:
Given
3x + 80° + 2x = 180° [ being linear pair ]
5x + 80° = 180°
5x = 180° - 80°
5x = 100°
x = 100° / 5
Therefore x = 20°
Hope it will help. :)
Answer:
(0,4)
Step-by-step explanation:
Given the line equation:
y = 3x + 2
Given the points :
(100, 302)
x = 100 ; y =302
302 = 3(100) + 2
302 = 300 + 2
(2, 8)
8 = 3(2) + 2
8 = 6 + 2
(0, 4)
4 = 3(0) + 2
4 ≠ 2
(9,29)
29 = 3(9) + 2
29 = 17 + 2
A year is divided into <u>12 months.</u>
Jack' family spent <u> $16,848</u> for one years's home rental.
16 848 ÷ 12 = 1404 ≈ 1400 → so the correct answer is<u> A. </u>
:)
Option C:
x = 90°
Solution:
Given equation:

<u>To find the degree:</u>

Subtract 1 + cos²x from both sides.

Using the trigonometric identity:




Let sin x = u

Factor the quadratic equation.

u + 2 = 0, u – 1 = 0
u = –2, u = 1
That is sin x = –2, sin x = 1
sin x can't be smaller than –1 for real solutions. So ignore sin x = –2.
sin x = 1
The value of sin is 1 for 90°.
x = 90°.
Option C is the correct answer.