Answer:
A.) x=90°
Step-by-step explanation:
Note:
The triangle shown is an isosceles triangle, which means that it has 2 congruent sides (as shown by the small intersecting lines), and this also means that it has two congruent angles.
We are given an angle measure adjacent to one of the missing angles. These two form supplementary angles, which means that they're sum is equal to 180°, or a straight line. So, to find:
y is the unknown angle. Solve for y:
y is 45°. Since this and the other angle are congruent, add:
Note:
Triangles angles will always add up to a total of 180°.
To find the missing angle x°, use:
These are the angles in a triangle. Substitute any known values and solve:
The missing angle x° is 90°.
:Done
The properties are the commutative, associative, additive identity and distributive properties
Let me edit your question to simplify it.
Eureka Math :
A)5 ÷ 1/3= ____.
B) There are ___ thirds in 1 whole.
C) There are ___ thirds in 5 wholes.
D) If 5 of 1/3, what is the whole? ___
E) 3 ÷1/5= ____ .
F) There are ___ fifths in 1 whole.
G) There are ___ fifths in 3 wholes.
H) If 3 of 1/5, what is the whole?___
Answer:
A) 15
B) three thirds
C) 15 wholes
D) whole is 2
E) 15
F) five fifths
G) 15 fifths
H) whole is 1
Step-by-step explanation:
A)
÷
- ÷
<u>Third:</u>
- third means
<u> </u>
B)
- To make 1 whole from thirds, we need three thirds i.e.
C)
- In 1 whole there are three thirds, so in 5 wholes there are
wholes.
D)
- In
- The whole of
or 
is 2 (rounding 1.6 to 2)
E)
÷
<u>Fifth:</u> means 
F)
- To make 1 whole of fifths we need five fifths i.e.
G)
- In 1 whole we have 5 fifths, so in 3 wholes we have
fifths
H)
80 Because the numbers are going up by 10
x 3
Step-by-step explanation:
