Answer:
Step-by-step explanation:
X=-11 because,
Step 1: Simplify both sides of the equation.
x
2
+
4
x
=
77
Step 2: Subtract 77 from both sides.
x
2
+
4
x
−
77
=
77
−
77
x
2
+
4
x
−
77
=
0
Step 3: Factor left side of equation.
(
x
−
7
)
(
x
+
11
)
=
Step-by-step explanation:
❉ 
❉ 
Plug the value of x and simplify :
⟿ 
Add the numbers : 4 and 5
⟿ 
Multiply 7 by 9
⟿ 

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Answer:
134 children and 120 adult plates were served
Step-by-step explanation:
let the children mean be x
Let the adult meal be y
If fourteen less children’s meals were served than adult meals at a barbecue, then;
y = x - 14 .... 1
IF Children plate were 1.50 each and adult plates were 2.00 each with a total of 441 in amount then;
1.5x + 2y = 441 .... 2
Substitute 1 into 2;
1.5x + 2(x-14) = 441
1.5x+2x-28 = 441
3.5x = 441+28
3.5x = 469
x = 469/3.5
x = 134
Recall that y = x - 14
y = 134-14
y = 120
Hence 134 children and 120 adult plates were served
Assuming you don't know the exact numbers, we can sequentially figure out the number of inches in a mile and seconds in a day
Inches in a mile:
There are 5280 feet in a mile.
5280*12 = 63360 inches in a mile
Seconds in a day:
There are 24 hours in a day
There are 24*60 = 1440 minutes in a day
There are 1440*60 = 86400 seconds in a day
There are more seconds in a day than inches in a mile.
Answer:
113 feet
Step-by-step explanation:
Use the ratio 1:50 to calculate the height of the tower.
The scale model height is 2.25 feet, so multiply that by 50
2.25 x 50 = 112.5
Round to 113 feet