6) 3x + 4 < - 62 x = - 23 ⇒ 3(-23) + 4 < - 62
<u> - 4 - 4 </u> -69 + 4 < - 62
3x < -66 - 65 < - 62
<u>÷ 3 ÷3</u>
x < -22
7) x/-5 + 1 <u><</u> 7 x = -30 ⇒ -30/-5 + 1 <u><</u> 7
<u> - 1 -1</u> 6 + 1 <u><</u> 7
x/-5 <u><</u> 6 7 <u><</u> 7
<u> × -5 × -5</u>
x <u><</u> -30
8) x/3 - 2 <u>></u> -12 x = -30 ⇒ -30/3 - 2 <u>></u> -12
x/3 <u>></u> -10 -10 - 2 <u>></u> -12
<u>* 3 *3</u> -12 <u>></u> -12
x <u></u><u>></u> -30
9) -2x - 6 > -18 x = 5 ⇒ -2(5) - 6 > -18
<u> +6 +6</u> -10 - 6 > -18
-2x > -12 -16 > -18
<u>÷ -2 ÷ -2</u>
x > 6 ⇒ x < 6
*flip the inequality sign because the divisor is a negative number: This is to make the inequality true.
Answer:
"Correct"
Triangles: Have three (3) sides
Quadriliaterals: QUAD being the key word means four (4)
"Incorrect"
Pentagons: Have five (5) sides
Hexagons: Have six (6) sides; key word being HEX
Heptagons: 7 sides (7)
Step-by-step explanation:
Let's call them: W and L
Then area: A = W × L
We can replace: L = 2 × W
So: A = W × 2W=98→
2W^2=98 →W^2=98/2=49
→W=√49=7
→L=2×W=2×7=14
Conclusion: The rectangle is 7*14 ft
Hope this helps :)
