Answer:
-3x² +6x -1 = 0
Step-by-step explanation:
x2 - 2x + = 4(x2-2x +1)-3
x² - 2x = 4x²-8x +4 - 3
x²-4x²-2x+8x = 4-3
-3x² +6x = 1
-3x² +6x -1 = 0
Answer:
y=620 lemme know if this helped by pressing thanks :)
Step-by-step explanation:
Your answer is the second option: The surface area of B is greater than the surface area of A.
To find the surface area, I found the area of the three sides shown and added them together, and then multiplied the answer by 2, so:
B:
8 × 2 = 16
8 × 10 = 80
10 × 2 = 20
+
= 116
116 × 2 = 232 cm²
A:
5 × 8 = 40
5 × 4 = 20
8 × 4 = 32
+
= 92
92 × 2 = 184 cm²
So therefore B > A because 232 > 184
I hope this helps!
Answer:
42.5
Step-by-step explanation:
Answer:
m∠A = 115°; m∠C = 50°
Step-by-step explanation:
∠A + ∠B + ∠C = 180
4x – 13 + 15 + x + 18 = 180 Combine like terms
5x + 20 = 180 Subtract 20 from each side
5x = 160 Divide each side by 5
x = 32
∠A = 4 × 32 – 13
= 128 – 13
= 115°
∠ C = 32 + 18
= 50°
<em>Check:
</em>
115 + 15 + 50 = 180
180 = 180
