If he runs 30 minutes a day and does a lap in 5 minutes then divide
First one :
10•5^2+4•-2^2=234
Second one :
-2(3•-2+-6)=24
<span>
−<span>2<span>(<span><span><span>(3)</span><span>(<span>−2</span>)</span></span>−6</span>)</span></span></span><span><span><span>
(<span>−2</span>)</span><span>(<span><span><span>(3)</span><span>(<span>−2</span>)</span></span>+<span>−6</span></span>)</span></span></span><span><span><span><span>
(<span>−2</span>)</span><span>(<span><span>(3)</span><span>(<span>−2</span>)</span></span>)</span></span>+<span><span>(<span>−2</span>)</span><span>(<span>−6</span>)</span></span></span></span><span>
<span>12+12</span></span><span><span>
24</span></span>
Last one :
2•-6(3•-6-5)
<span><span><span>
(2)</span><span>(<span>−6</span>)</span></span><span>(<span><span><span>(3)</span><span>(<span>−6</span>)</span></span>−5</span>)</span></span><span><span>
(<span><span>(2)</span><span>(<span>−6</span>)</span></span>)</span><span>(<span><span><span>(3)</span><span>(<span>−6</span>)</span></span>+<span>−5</span></span>)</span></span><span><span><span>
(<span><span>(2)</span><span>(<span>−6</span>)</span></span>)</span><span>(<span><span>(3)</span><span>(<span>−6</span>)</span></span>)</span></span>+<span><span>(<span><span>(2)</span><span>(<span>−6</span>)</span></span>)</span><span>(<span>−5</span>)</span></span></span><span>
216+60</span><span>
=276
Hoped I helped!</span>
we do 2x-1/y=w+2/2z
2x-1/y we multiple each side y
2x-1/y×y=2x-1
then w+2/2z
we said×2z×2z
then we got
w+2
later
2x-1=w+2=
then 1 become another side
which is 1+2=3
then
w=3-2x
I hope it's correct
Answer:
Dan=6 days Dave=12 days
Step-by-step explanation:
1/2x + 1/x = 1/4
multiply each by 8x bc 4 * 2x = 8x
4 + 8 = 2x
12 = 2x
6 = x
First day: 25% × 100 = 25 ( miles)
Second day : the remaining distance is 100 - 25 = 75 ( milesl
Third day: 40% × 75 = 30
25 + 75 + 30 = 130 (miles)
