Answer:
Vertical angles
x=25
Step-by-step explanation:
Adjacent angles are angles that are next to each other. Vertical angles are angles that are opposite each other.
In this problem, the angles are opposite each other. Therefore, they are <u>vertical</u> <u>angles.</u>
Since they are vertical angles, they are congruent, or equal. So, we can set them equal to each other and solve for x.
75=4x-25
To solve for x, we have to isolate x. First, move all the constants to the same side, by adding 25 to both sides.
75+25=4x-25+25
75+25=4x
100=4x
Now, 4 and x are being multiplied. To undo this, divide both sides by 4.
100/4=4x/4
100/4=x
25=x
The angles are vertical and x=25
12) Angle ACD= Angle ABC+ Angle CAB ====> You MAY end here
That is, Angle ACD= 132+21
Angle ACD= 153
13) Angle ABC+ Angle BAC= Angle ACD====> You MAY end here
That is, Angle ABC +16=143
-16= -16
Angle ABC=127
That's correct.
She will need to travel 244 miles a week for 9 weeks.
Let
x-->volume of white vinegar you need to add to the mixture (measured in cups)
<span>then
the amount of the pure vinegar in the mixture will be -----> (10*0.1 + x) cups
t</span>he volume of liquid will be ---------> 10 + x
the concentration equation is-------> [(10*0.1 + x)/(10+x)]=0.50<span>multiply both sides by (10+x) and then simplify
</span>(10*0.1 + x)=(10+x)*0.50-----------> 1+x=5+0.50x-------> 0.50x=4
x=8
the answer is
<span>you need to add 8 of a cup of the pure vinegar to the mixture</span>
Im not sure but i think the answer is about 266.6