6x+3y=12. so... 6x=12-3y.
6x-5y=60, so... 6x=60+5y
As 6x=6x
12-3y=60+5y
12-60=8y
8y=-48
So y=-48/8=-6
When y=-6,
6x-5(-6)=60
6x+30=60
6x=30
Therefore x=5.
So x=5 and y=-6.
Answer:
-20
Step-by-step explanation:
-3×4 is -12.
-2×4= -8
add the two, and you get -20
Answer:
Isosceles triangle
Step-by-step explanation:
Any triangle whose two sides or two angles are equal is called an isoscl triangle
Answer:
C. square
Step-by-step explanation:
<u>Congruent</u> means "the same" (having the same shape and size).
Any four-sided, 2-dimensional shape with straight sides is called a <u>quadrilateral</u>.
There are 6 special types of quadrilaterals:
<u>Rectangle</u>
- Opposite sides are parallel and equal in length
- All interior angles are 90°
<u>Square</u>
- All sides are equal in length
- All interior angles are 90°
<u>Rhombus</u>
- All sides are equal in length
- Opposite sides are parallel
- Opposite angles are equal
<u>Parallelogram</u>
- Opposite sides parallel and equal in length
- Opposite angles are equal
<u>Trapezoid</u>
- One pair of opposite parallel sides
<u>Isosceles Trapezoid</u>
- One pair of opposite parallel sides
- One pair of non-parallel sides equal in length
- Two pairs of equal base angles
<u>Kite</u>
- Two pairs of adjacent sides equal in length
- The angles included between the sides of differing lengths are equal
<u>Conclusion</u>
A four-sided shape that has four congruent angles and sides is a SQUARE.
