Answer:
<u><em>$4.50 or $4.5</em></u>
Step-by-step explanation:
<em><u>well, this is easy</u></em>
<em><u>30% equals to 0.30 right.</u></em>
<em><u>we can't divide because if we do then the answer would be 50$ and that's way more money than Jill has.</u></em>
<em><u>so your wondering. What do we do?</u></em>
<em><u>Well, what's 30% of 15?</u></em>
<em><u>It's 4.5</u></em>
<em><u>4 dollars and 5 cents that U will have with Jill.</u></em>
To find the original length you must take away the add-ons. To do so we know that they added 7 and A= l*l (or l squared). They added the 7 to the length so multiply 7*7 (49) subtract your answer from 169 (120) and that's your new area. To find the original length divide by 4 (I believe) and get 30m2
-x + 1/2 = x + 4 1/2
+x +x
1/2 = 2x + 4 1/2
-4 1/2 - 4 1/2
-4 = 2x
x = -2
Let the ladder length be L, then
sin 70 = 20/L, L = 20/sin70 = 21.3 feet
the length of ladder is 21.3 feet
7√7
using the ' rule of radicals '
• √a × √b ⇔ √ab
simplifying the radicals
√28 = √(4 × 7 ) = √4 × √7 = 2√7
√63 = √(9 × 7) =√9 × √7 = 3√7
√112 = √(16 × 7 ) = √16 × √7 = 4√7
substituting into the expression
3(2√7) - 5(3√7) + 4(4√7) = 6√7 - 15√7 + 16√7 = 7√7
