Answer:
110°
Step-by-step explanation:
180°-60°-50°=70°
×=180°-70°=110°
PEMDAS
Multiply -9 for the values in the parentheses
-4.5x + 27
A: 3 times as many
Since 13 multiplied by 3 is 39, multiply 4 and 3 to get 12
Answer:
12.5
Step-by-step explanation:
Let an old value be A
and a new value be B
Also, let B is greater than A
The number of times B is greater than A is found by dividing B by A
Now, in terms of scientific notation, how would we do the division? It is shown below:
![\frac{a*10^b}{z*10^y}=(\frac{a}{z})*10^{b-y}](https://tex.z-dn.net/?f=%5Cfrac%7Ba%2A10%5Eb%7D%7Bz%2A10%5Ey%7D%3D%28%5Cfrac%7Ba%7D%7Bz%7D%29%2A10%5E%7Bb-y%7D)
Now, coming to our question, let's do the math using the statements and formulas we have seen above:
![\frac{1.2*10^7}{9.6*10^5}\\=(\frac{1.2}{9.6})*10^{7-5}\\=0.125*10^2](https://tex.z-dn.net/?f=%5Cfrac%7B1.2%2A10%5E7%7D%7B9.6%2A10%5E5%7D%5C%5C%3D%28%5Cfrac%7B1.2%7D%7B9.6%7D%29%2A10%5E%7B7-5%7D%5C%5C%3D0.125%2A10%5E2)
10^2 means 100, so we do the multiplication:
![0.125*10^2\\0.125*100\\12.5](https://tex.z-dn.net/?f=0.125%2A10%5E2%5C%5C0.125%2A100%5C%5C12.5)
So, it is 12.5 times greater