Step-by-step explanation:
since perimeter is adding all around she took the all the values and added them as above. as you can see 3√2 and 4√2 has the same square root so she added 3+4 which gave us 7√2 and then added the 2√5 but since they don't have the same square root we can't add them like we did in the other so we'll just put 7√2+2√5
Answer:
![\frac{-17}{6}](https://tex.z-dn.net/?f=%5Cfrac%7B-17%7D%7B6%7D)
Step-by-step explanation:
Let x be the number we want to find.
First we analyze the given informations
Info 1 : <u><em>Two times the sum of four times a number plus six</em></u>
We translate this statement (info 1) mathematically as : 2×(4x + 6)
Info 2 : <u><em>five less than twice the same number</em></u>
We translate this statement (info 2) mathematically as : 2x - 5
Info 1 <u><em>is the same as</em></u> Info 2 ⇔ 2×(4x + 6) = 2x - 5
2×(4x + 6) = 2x - 5
⇔ 8x + 12 = 2x - 5
⇔ 8x - 2x = -5 - 12
⇔ 6x = - 17
⇔ x = -17/6
Answer:
x ≤ -27
Step-by-step explanation:
≥ 3
to isolate the 'x' we need to multiply each side by -9
whenever you multiply or divide an inequality by a negative you must reverse the inequality symbol, therefore:
x ≤ -27
Answer:
everything is correct
Step-by-step explanation:
you did a good job
5x + 4y ≤ 20
5x - 5x + 4y ≤ 20 - 5x
<u>4y</u> ≤ <u>20 - 5x</u>
4 4
y ≤ 5 - 1.25x