5+3a = 3-2a
So
5a = -2
a=-2/5=-0.4
Answer:
5 Hours
Step-by-step explanation:
340 = 215 + 25x
DO INVERSE OPERATIONS ~ MINUS BOTH SIDES OF THE = SIGN
340 - 215 = 125
215 - 215 = 0
125 = 25x
DIVIDE BOTH SIDE NOW
125 / 25 = 5
25x / 25 = 1 = x
<em>5 Hours</em>
Answer:
Answer:
![x=\frac{75}2](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B75%7D2)
Step-by-step explanation:
Give letters, as in the attached image.
The triangles ABE and CDE are similars (AAA). In particular ![AE:CE=BE:DE \rightarrow 46:30=(x+20):x \rightarrow 46x=30(x+20) \rightarrow 23x=15x+300 \rightarrow 8x=300\rightarrow x=\frac{75}2](https://tex.z-dn.net/?f=AE%3ACE%3DBE%3ADE%20%5Crightarrow%2046%3A30%3D%28x%2B20%29%3Ax%20%5Crightarrow%2046x%3D30%28x%2B20%29%20%5Crightarrow%2023x%3D15x%2B300%20%5Crightarrow%208x%3D300%5Crightarrow%20%20x%3D%5Cfrac%7B75%7D2)
Answer:
Yes
Step-by-step explanation:
It's just like adding fractions where you have to find the common denominator so the fractions can be subtracted.
<u>Example</u>
<u />![\displaystyle \frac{1}{2}-\frac{1}{3}=\frac{1*3}{2*3}-\frac{2*1}{2*3}=\frac{3}{6}-\frac{2}{6}=\frac{1}{6}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%7B1%7D%7B2%7D-%5Cfrac%7B1%7D%7B3%7D%3D%5Cfrac%7B1%2A3%7D%7B2%2A3%7D-%5Cfrac%7B2%2A1%7D%7B2%2A3%7D%3D%5Cfrac%7B3%7D%7B6%7D-%5Cfrac%7B2%7D%7B6%7D%3D%5Cfrac%7B1%7D%7B6%7D)
Answer:
24 units squared
Step-by-step explanation: