Race to get brainliest, need help!
2 answers:
Answer:
Original number is 86
Step-by-step explanation:
Original: 10x + y
Double reversed: 2(10y + x)
Constraints:
x + y = 14 ===> x = 14 - y
2(10y + x) + 10x + y = 222 ===> 21y + 12x = 222
Substitution to find y:
21y + 12x = 222
21y + 12(14 - y ) = 222
21y + 168 - 12y = 222
9y + 168 = 222
9y = 54
y = 6
Substitution to find x:
x = 14 - y
x = 14 - 6
x = 8
Original: 10x + y
10(8) + (6)
80 + 6
86
X = Tens place y = Ones place x+y=14 y=14-x 2(10y+x)+(10x+y)=222 20y+2x+10x+y=222 21y+12x=222 21(14-x)+12x=222 294-21x+12x=222 -9x = -72 x = 8 y = 14-8 =6 ANSWER: 86
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Answer:
254.5 in.^2
Step-by-step explanation:
diameter of mirror = 12 in.
radius of mirror = diameter/2 = 13 in. / 2 = 6 in.
frame width = 3 in.
radius if combined mirror and frame = 6 in. + 3 in. = 9 in.
A = (pi)(r^2)
A = 3.14159 * (9 in.)^2
A = 3.14159 * 81 in.^2
A = 254.5 in.^2
Answer:
Please add a attachment.
Step-by-step explanation:
Answer:
the answer is D according to my scorrs
Answer:
(2z + 5)(2z - 3)
Step-by-step explanation:
4z² + 4z - 15
4z² + 10z - 6z - 15
2z (2z + 5) - 3 (2z + 5)
(2z + 5)(2z - 3)
Answer:H=191.2
Step-by-step explanation:
H=2.9(39)+78.1
H=113.1+78.1
H=191.2 cm