Let's use n to represent the unknown number:
n = 4*12/2
=48/2
= 24
The unknown number is 24
<h2>
Answer with explanation:</h2>
Given : Shelly and Kristen share a birthday, but Shelly is 5 years older.
i.e. Age of Shelly = Age of Kristen +5
a. Table show their ages every year, beginning when Kristen was born. :
Kristen Shelly
0 5
1 6
2 7
3 8
4 9
b. If Kristen is 16 years old, then the age of Shelly = 16+5=21
c. If Kristen is K years old, then the age of Shelly = K+5
d. Also, age of Kristen = Age of Shelly - 5
If Shelly is S years old, then the age of Kristen = S-5
Answer:
The quadrilateral is a trapezium as two of its opposite sides are perpendicular to one side. Rectangle is also a type of trapezium and so is a square
Hope this helps!
Answer:
78
Step-by-step explanation:
angle ACD + angle DCB = 180 (Angles on straight line)
4x + 2 + 3x + 3 = 180
7x + 5 = 180
7x = 180-5
7x = 175
x = 175 / 7
x = 25
angle DCB = 3x +3 = 3*25 + 3 = 75 +3 = 78
Answer:
m=5
Step-by-step explanation:
We can solve this by using a system of equations. The easiest way to solve this is by using substitution.
3m=19-n Subtract both sides by 19 to find n.
<u>-19 -19</u>
3m-19=-n Divide everything by -1 to make n positive.
<u>/-1 /-1</u>
n=-3m+19
Now, we can substitute n into the second equation.
2m+5(-3m+19)=30 Substitute (-3m+19) into n.
2m-15m+95=30 Simplify.
-13m+95=30 Simplify and subtract both sides by 95.
<u>-95 -95</u>
-13m=-65 Divide both sides by -13.
<u>/-13 /-13</u>
m=5
We don't need to solve for n at all, so that is the answer!
Hope this helps, and have an amazing day ♥
