No, two sides the same is not enough.
You need more proof.
Side, angle, side. (SAS).
AD = DC
Angle ADB = Angle CDB
BD = BD
By the SAS property, the two triangles are the same.
I think this is one way to prove it...
Or, similarly...use ASA, (Angle, side, angle).
<span><span><span>3<span>d3</span></span>+<span>4<span>d2</span></span></span>+<span>2d</span></span>−3 and <span><span>−<span>2<span>w2</span></span></span>+<span>10w</span></span>−7 and <span>4<span>z3</span></span>−<span>6<span>z<span>2</span></span></span>
Answer: x=7
ab=21
bc=14
Step-by-step explanation:
ab=3x
bc=2x±7
ac=42
3x±2x±7=42
5x±7=42
5x=42-7
5x=35
to get the value of x you divide 35 by 5x
35÷5x=7
so the value of x is 7
ab=3x
x=7
3x=7×3x
7×3=21
x=7
2x=7×2x
2×7=14
Answer:
The equation is c=2n
The constant of proportionality is 2
$18 will buy 9 cups of coffee
Step-by-step explanation:
Cost c=2*n
where c is the number of cups
The constant of proportion is 2
If cost is $18, then
18 = 2n
n = 18/2
n = 9
$18 will purchase 9 cups of coffee
X - unit of length
w,l - the sides of a rectangle
7 : 2 ⇒ 7x : 2x
Perimeter: P = 207cm
Perimeter: P = 2w + 2l
therefore: 2w + 2l = 207 |divide both sides by 2
w + l = 103.5 (cm)
w : l = 7 : 2 ⇒ w : l = 7x : 2x ⇒ w = 7x; l = 2x
subtitute
7x + 2x = 103.5
9x = 103.5 |divide both sides by 9
x = 11.5 (cm)
7x = 7 · 11.5cm = 80.5cm
2x = 2 · 11.5cm = 23cm
w = 80.5cm; l = 23cm
Area = wl
Area: A = 80.5cm · 23cm = 1851.5cm²