Answer:
y=4,x=1
Step-by-step explanation:
4x+y=8
x+y=5
subtract equation 2 from equation 1
3x + 0=3
3x=3
divide both sides by 3
x=1
substitute for x=1 in equation 2
x+y=5
1+y=5
y=5-1(collecting like terms)
y=4
Answer:
52°
Step-by-step explanation:
since EB bisects ∠RED, ∠REB = ½× ∠RED.
and the equation could be :
5x-3=½(8x+16)
5x-3=4x+8
5x-4x=8+3
x = 11
so, ∠BED = ∠REB = 5x – 3 = 5(11)-3
= 55-3 = 52°
THe answer is the second option because you have to use the pythogorean theorm to fing the 3rd side and multiply your answer by 2 to get the value of x.
Answer:
Total Surface Area of the given regular pyramid = 153 units²
Step-by-step explanation:
Base length of the regular pyramid, l = 9 units
Base width of the regular pyramid, w = 9 units
Height of the regular pyramid, h = 7 units
Perimeter of base = 3 × 9
= 27 units
Hence, Total Surface Area of the given regular pyramid = 153 units²