Step-by-step explanation:
i think you just need to add i may be wrong
0.3(12x-16) = 0.4(12-3x)
0.3 is easier written as 3/10 and 0.4 easier written as 2/5, but in this case, 4/10 would help with the other fractions
3*12x/10-16*3/10 = 12*4/10 - 3x*4/10
36x/10-48/10 = 48/10 - 12x/10
since all the fractions are divided by 10, you can remove them totally by multiplying everything with 10
36x-48 = 48 - 12x
36x + 12x = 48 + 48
Here we moved the numbers, by adding them to both sides
48x = 48*2
we can find x by dividing by 48
x = 48*2/48
since we have a 48 both over and under the fraction we can cross out both
x = 2/1 = 2
To find the missing two angle measures, you will need to know that the sum of all nine angles in a nonagon equal 1260 degrees.
Knowing this, you can use this total to find the missing congruent angles.
Start with the total and subtract what you know. Divide what is left by two to get each angle measure.
1. 1260 - ( 138 + 154 + 145 + 132 + 128 + 147 + 130) = 286
2. 286/2 = 143
The missing angles are each 143 degrees.
Answer:
(true)
Step-by-step explanation:
200*((0.6)^5)=200*0.07776=15.552 feet
<span>q + d=19
0.25q + 0.1d=4
</span><span> (d)
-0.1(q + d=19)
0.25q + 0.1d=4
Opposites cancel
-0.1q -0.1 d=1.9
0.25q + 0.1d=4</span>
