Step-by-step explanation:
×2+(y+3) 2=49
2×y=2y=2×3=6
49-2=47
2y=47-6=41
2y=41÷2=20 1/2
Answer:
26.4
Step-by-step explanation:
<u>Law Of Cosines:</u>

This should work for any side. This can generally be thought as:

If this is too confusing here's the formula for the other sides (which is essentially the same, just different variables)


Anyways now just plug in the known values into the equation

Square and multiply values

Add the values in the numerator

Take the inverse of cosine on both sides

calculate arccosine (inverse cosine) using a calculator

Round to nearest tenth

Answer:
m=5
Step-by-step explanation:
We can solve this by using a system of equations. The easiest way to solve this is by using substitution.
3m=19-n Subtract both sides by 19 to find n.
<u>-19 -19</u>
3m-19=-n Divide everything by -1 to make n positive.
<u>/-1 /-1</u>
n=-3m+19
Now, we can substitute n into the second equation.
2m+5(-3m+19)=30 Substitute (-3m+19) into n.
2m-15m+95=30 Simplify.
-13m+95=30 Simplify and subtract both sides by 95.
<u>-95 -95</u>
-13m=-65 Divide both sides by -13.
<u>/-13 /-13</u>
m=5
We don't need to solve for n at all, so that is the answer!
Hope this helps, and have an amazing day ♥
Hello from MrBillDoesMath!
Answer:
- 28.6 % (approx)
Discussion:
14 -> 10 dollars is a drop of (14-10) or 4 dollars. The percent drop is given by
(14-10)/14 =
4/14 =
2/7 =
28.6% (approx)
Since this is a drop the percent is actually negative = - 28.6%
Thank you,
MrB
4 Dimensional<span> shapes can</span><span> cast </span>3 dimensional shadows<span>. ... M</span><span>aybe a </span>shadow<span> is the fourth dimension, its been here all the time.</span>