Answer:
34.04 cm²
Step-by-step explanation:
Formula for a trapezoid:
a + b ÷ 2 × height
Substitute the values:
11.7 + 3.1 = 14.8
14.8 ÷ 2 = 7.4
7.4 × 4.6 = 34.04
The answer is 34.04 cm²
The last one
Step-by-step explanation:
the one with b=7 & h=5 because you have to multiply both numbers together , so you multiply and then see the smallest answer
When you divide or multiply by a neg. number you must flip the sign, therefore t>-12 (the 3rd option)
Answer:
(3y + 1)(y + 4)
Step-by-step explanation:
3y^(2) + 13y + 4 = 3y^(2) + 12y + y + 4 = 3y(y + 4) + 1(y + 4) = (3y + 1)(y + 4)
Answer:
Radius=2
Center: (-4,3)
Step-by-step explanation:
The general equation of a circle is
(x-xo)²+(y-yo)²=r², where (xo,yo) are the coordinates of the center, and r is the radius.
Now: x²+y²+8x−6y+21=0
x²+8x+y²-6y+21=0
(x²+8x+16-16)+(y²-6y+9-9)+21=0
(x²+8x+16)-16+(y²-6y+9)-9+21=0
(x+4)²+(y-3)²-16-9+21=0
(x+4)²+(y-3)²=16+9-21=25-21=4=2²
So
(x+4)²+(y-3)²=2².
Thus, the radius is 2.
The center is at (-4,3)
