Answer:
1/y -84
Step-by-step explanation:
7y/12-84
simplify= 1/y-84
Answer:
25m + 10b = 400
Step-by-step explanation:
Total amount that can be earned = $ 400
Amount earned on mowing a lawn = $ 25
Amount earned per hour on babysitting = $10
Amount earned for mowing one lawn is $ 25, so amount earned for mowing m lawns will be $ 25m
Amount earned for one hour of babysitting is $ 10, so amount earned for babysitting for b hours will be $ 10b
Total amount earned = Amount earned from mowing m lawns + Amount earned from babysitting for b hours
Using the values from above, we can set up the equation as:
400 = 25m + 10b
Answer:
-34
Step-by-step explanation:
22+n=-12
n=-12-22
n=-34
When you bring a positive constant to the other side of the equal sign it goes negative and vise versa. Then you combine like terms.
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Answer : Distance between the ships to the nearest miles = 106.03 ≈ 106 mi.
Explanation :
Since we have shown in the figure below :
a=70 mi.
b=52 mi.
c=x mi.
![\text{Since two ships leaves the same port in different directions forming a }120\textdegree\text{angle between them.}](https://tex.z-dn.net/?f=%5Ctext%7BSince%20two%20ships%20leaves%20the%20same%20port%20in%20different%20directions%20forming%20a%20%7D120%5Ctextdegree%5Ctext%7Bangle%20between%20them.%7D)
So, we use the cosine rule , which states that
![c^2=a^2+b^2-2ab.cosC\\\\x^2=70^2+52^2-2\times 70\times 52\times cos(120\textdegree)\\\\x^2=4900+2704-7280\times (-0.5)\\\\x^2=7604+3640\\\\x^2=11244\\\\x=\sqrt{11244}\\\\x=106.03](https://tex.z-dn.net/?f=c%5E2%3Da%5E2%2Bb%5E2-2ab.cosC%5C%5C%5C%5Cx%5E2%3D70%5E2%2B52%5E2-2%5Ctimes%2070%5Ctimes%2052%5Ctimes%20cos%28120%5Ctextdegree%29%5C%5C%5C%5Cx%5E2%3D4900%2B2704-7280%5Ctimes%20%28-0.5%29%5C%5C%5C%5Cx%5E2%3D7604%2B3640%5C%5C%5C%5Cx%5E2%3D11244%5C%5C%5C%5Cx%3D%5Csqrt%7B11244%7D%5C%5C%5C%5Cx%3D106.03)
So, c = x= 106.03 mi.
Hence, distance between the ships to the nearest miles = 106.03 ≈ 106 mi.
Answer:
C because its the only one that fits the question its asking. 12-6 8-4 4-2
Step-by-step explanation: