Answer:
Two times the sum of a number and nine.
Step-by-step explanation:
Answer:
You can buy exactly 4 fish.
I hope I'm right.
a) n° + n°+ 42 = 180°
2n + 42 = 180
2n = 180 – 42
2n = 138
n = 138 /2
n° = 69°
_____o___o____
b) ( x+10) + x + ( x+5 ) = 180
x + 10 + x + x + 5 =180
3x + 15 =180
3x =180 – 15
3x = 165
x = 165 /3
x° = 55°
_____o___o___
c) 3q + q + q = 180
5q =180
q = 180/5
q=36°
___o___o____
d) m + 2m + ( m+10) = 180
m+2m+m+10=180
4m + 10=180
4m = 180 – 10
4m = 170
m=170 / 4
m = 42.5°
____o___o___
e) y + (y – 30 ) + 90° = 180°
y + y – 30 + 90 = 180
2y + 60 = 180
2y = 180 – 60
2y = 120
y = 120/2
y = 60°
____o___o____
f) ( t + 10.5 ) + 2t + 90 = 180
t + 10.5 + 2t +90=180
3t + 100.5 = 180
3t = 180 – 100.5
3t = 79.5
t = 79.5/3
t =26.5°
I hope I helped you^_^
Answer:
x = 136º
Step-by-step explanation:
Corresponding Angles are congruent
x = 136º
11:
1: Given
2: Angle bisector definition.
3: Reflexive property
4: Given
5: Angle Bisector definition.
6: ASA postulate
12:
With HL, we can say that a right triangle is congruent because its hypotenuse and one leg are the same. Keep in mind, this only works with right triangles- and we know that both are right by the box in the corner.
We know that the hypotenuse is the same because of the tick marks on both sides.
We know that one leg is the same, because that one leg is used by both triangles, so it has to be the same.
The legs that support HL are SP, SR, and SQ.
Hope this helps!
