Answer:
M=-3
Step-by-step explanation:
10=7-m
Subtract 7 from both sides
3=-m
Divide by negative
-3=m
Step-by-step explanation:
I think its 2/6 becuase its bigger
13,822 to one significant figure is 10,000
623 to one significant figure is 600
14 to one significant figure is 10
10,000 times 600 = 6,000,000
6,000,000/10 = 600,000
the question in English
Mateo will reproduce a photo measuring 5 cm per side on a scale of 3/4
How much will the square side of the copy measure?
Will the size of the copy be larger or smaller than the original?
we know that
the scale factor is equal to ![\frac{3}{4}](https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B4%7D)
Let
x----------> the original length side
y--------> the copy length side
![y=\frac{3}{4}*x](https://tex.z-dn.net/?f=y%3D%5Cfrac%7B3%7D%7B4%7D%2Ax)
we have that
![x=5\ cm](https://tex.z-dn.net/?f=x%3D5%5C%20cm)
substitute the values
![y=\frac{3}{4}*5=3.75\ cm](https://tex.z-dn.net/?f=y%3D%5Cfrac%7B3%7D%7B4%7D%2A5%3D3.75%5C%20cm)
therefore
<u>the answer Part a) is </u>
the length side of the copy measure is ![3.75\ cm](https://tex.z-dn.net/?f=3.75%5C%20cm)
Part b)
we know that
the size of the original photo is------> ![5*5=25\ cm^{2}](https://tex.z-dn.net/?f=5%2A5%3D25%5C%20cm%5E%7B2%7D)
the size of the copy is------> ![3.75*3.75=14.06\ cm^{2}](https://tex.z-dn.net/?f=3.75%2A3.75%3D14.06%5C%20cm%5E%7B2%7D)
so
![14.06\ cm^{2} < 25\ cm^{2}](https://tex.z-dn.net/?f=14.06%5C%20cm%5E%7B2%7D%20%3C%2025%5C%20cm%5E%7B2%7D)
therefore
<u>the answer part b) is</u>
The size of the copy be smaller than the original