Answer: x=90° y=43°
Step-by-step explanation: Right away you may be able to tell that x is a right triangle, which is 90°. Now, look at the two small lines cutting through some of the triangle. That means the sides are congruent, and that the bottom two angles are the same. So if angle C is 47°, then so is D. A triangle has 180° in total. So since we already have 47° and 90°, subtract 47 and 90 from 180 to get angle y.
Answer:
28 cm
Step-by-step explanation:
If the shape is a square, all the sides are equal. To find the area you multiply the length by the width. Since the area is 49 centimeters, find the square root of 49 to find the length of the length and the height of the square, which is 7. To find perimeter, you add the lengths of all the sides of the square. 7+7+7+7=28.
there is no question here
Answer: welcome
Step-by-step explanation:
x
−
z
=
18
Explanation:
We can write the following averages:
x
+
y
+
80
3
and
y
+
z
+
80
3
The first (red) one is greater than the second (blue) one by 6.
Therefore the difference is 6.
x
+
y
+
80
3
−
y
+
z
+
80
3
=
6
×
3
3
×
(
x
+
y
+
80
)
3
−
3
×
(
y
+
z
+
80
)
3
=
6
×
3
x
+
y
+
80
−
(
y
+
z
+
80
)
=
18
x
+
y
+
80
−
y
−
z
−
80
=
18
x
+
y
+
80
−
y
−
z
−
80
=
18
×
×
×
×
×
×
×
x
x
−
z
=
18
